Water Power

( Original Source : Wikipedia Encyclopedia, Photo : Google Images )

Energy in water (in the form of motive energy or temperature differences) can be harnessed and used. Since water is about a thousand times denser than air, even a slow flowing stream of water, or moderate sea swell, can yield considerable amounts of energy.

The reservoir created for hydroelectric dams may initially produce significant amounts of carbon dioxide and methane from rotting vegetation. Once this vegetation is gone, no additional greenhouse gases are produced. In some cases they may produce more of these greenhouse gases than power plants running on fossil fuels. They also affect water quality, creating large amounts of stagnant water without oxygen in the reservoir, and excessive air bubbles in the water downstream from the dam, both of which impact aquatic life. Failures of large dams, while rare, are potentially. Though the dams can be built stronger, at greater cost, they are still prone to sabotage and terrorism. Smaller dams and micro hydro facilities are less vulnerable to these threats. Wave and tidal stream power demonstration projects exist, but large scale development requires additional capital.

Wayang Kulit : A highlight of Javanese culture

( Original Source : Discover-indo.tierranet.com Website, Photo : Google Images )

Wayang is a Javanese word meaning "shadow" or "ghost", kulit means "leather", and added together "shadow from leather". The wayang kulit is the flat one and it is made with buffalo leather. They are maipulated behind a white screen with a back light, so the attendance can see them as shadow puppets. Wayang Kulit in Central Java is probably one of the oldest continuous traditions of storytelling in the world, and certainly among the most highly developed. Wayang is well integrated in Javanese society, and it is considered to be a highlight of Javanese culture. Wayang Kulit was already established in the East Javanese kingdoms one thousand years ago.

In 2003 the UNESCO proclaimed the Wayang puppets Theater of Indonesia as a "Masterpiece of the Oral and Intangible Heritage of Humanity". The related action plan recommends that specialized schools play a greater role in the transmission of traditional skills linked to wayang and that support be provided to enable puppeteers to earn a living as professional performers. The plan also calls for the creation of inventories, publications, audio-visual recordings and seminars designed to encourage research.

Penguin

( Original Source : Wikipedia Encyclopedia )


Penguins (order Sphenisciformes, family Spheniscidae) are a group of aquatic, flightless birds living almost exclusively in the Southern Hemisphere.

The number of penguin species has been and still is a matter of debate. Depending on which authority is followed, biodiversity varies between 17 and 20 living species, all in the subfamily Spheniscinae. Some sources consider the White-flippered Penguin a separate Eudyptula species, while others treat it as a subspecies of the Little Penguin, the actual situation seems to be more complicated. Similarly, it is still unclear whether the Royal Penguin is merely a color morph of the Macaroni penguin. Also possibly eligible to be treated as a separate species is the Northern population of Rockhopper penguins. Although all penguin species are native to the southern hemisphere, they are not, contrary to popular belief, found only in cold climates, such as Antarctica. In fact, only a few species of penguin actually live so far south. At least ten species live in the temperate zone; one lives as far north as the Galápagos Islands (the Galápagos Penguin).

Kangaroo (macropodidae macropus)

A kangaroo is any of several large animals of the Macropodidae, a marsupial family that also includes the wallabies, tree-kangaroos, wallaroos, pademelons and the Quokka, some 63 living species in all. Kangaroos are endemic to the continent of Australia, while tree-kangaroos are found on both Australia and New Guinea. The term kangaroo is sometimes used in a broader sense to refer to all members of the macropod family, but is generally reserved for the four largest macropods, namely the Red Kangaroo, the Antilopine Kangaroo, and the Eastern and Western Grey Kangaroo of the Macropus genus. Smaller macropods are called wallabies, while some intermediate in size are called wallaroos. ( Original Source : Wikipedia Encyclopedia, Photo Source : en.wikipedia.org/wiki/Kangaroo#/media/File:Macropus_giganteus_-_Brunkerville.jpg)

The Movie : Transformers

( Original Source : Wikipedia Encyclopedia )

Following a battle on Cybertron, events move to the Arctic Circle during the 1800s where Captain Archibald Witwicky is shown chipping away at a massive sheet of ice, only to break through it and fall into the abyss, landing on a robotic hand partially buried in the ice. He finds the eyes of Megatron staring back at him. Megatron burns a map showing the location of the mysterious Allspark into Witwicky's eyeglasses, which are handed down to his descendant, Sam (Shia LaBeouf), in the present day. When Witwicky buys his first car from dealer Bobby Bolivia (Bernie Mac), it happens to be the Autobot Bumblebee, and Witwicky comes under the protection of the Autobots as the Decepticons come looking for the map.

Elsewhere, Decepticons Blackout and Scorponok attack a United States Air Force base in Qatar in the present day. The Allspark has also been referred to as both the Energon Cube and the Energon Crystal; the earliest description credited it as "responsible for Transformer life on Earth." The Allspark is based upon the Creation Matrix of the original Transformers comics.

Wind Power

( Original Source : Wikipedia Encyclopedia, Photo : Google Image )

Wind power uses the naturally occurring energy of the wind for practical purposes like generating electricity, charging batteries, or pumping water. Wind turbines capture the kinetic energy in the wind, converting it into electrical energy. Utility-scale turbines are mounted on tall towers, usually 100 feet or more above the earth's surface where the wind is faster and less turbulent. In utility-scale power applications, anywhere from one or two to several hundred turbines are connected to the utility grid, providing electricity when the wind blows.

Kinetic energy in airflows can be used to run wind turbines; some are capable of producing 5 MW of power; turbines with rated output of 1.5-3 MW have become the most common for commercial use. The power output of a turbine is a function of the cube of the wind speed, so high-power output can be achieved as wind speed increases, though turbines must shut off at extreme wind speeds to prevent damage. Areas where winds are stronger and more constant, such as offshore and high altitude sites, are preferred locations for wind farms.

Lily (lilium)

( Original Source : Wikipedia Encyclopedia, Photo Source : Google Images )

The plants of the genus Lilium are the true lily plants, comprising a genus of about 100 species in the lily family, Liliaceae. They are important as showy and large flowered garden plants, and in literature.
Lilies are native to the northern temperate regions. Their range in the Old World extends across much of Europe, the north Mediterranean, across most of Asia to Japan, south to the Nilgiri mountains in India, and south to the Philippines. In the New World they extend from southern Canada through much of the United States. A few species formerly included within this genus have now been placed in other genera. These include Cardiocrinum and Nomocharis.
They are commonly adapted to either woodland habitats, often montane, or sometimes to grassland habitats. A few can survive in marshland and a single one is known to live as an epiphyte (L. arboricola). In general they prefer moderately acidic or lime-free soils.

Bamboo (poaceae bambusoideae)

( Original Source : Wikipedia Encyclopedia, Photo Source : Google Images )

Bamboos are a group of woody perennial evergreen plants in the true grass family Poaceae, subfamily Bambusoideae, tribe Bambuseae. Some of its members are giants, forming by far the largest members of the grass family. There are 91 genera and about 1,000 species of bamboo. They are found in diverse climates, from cold mountains to hot tropical regions. They occur from Northeast Asia (at 50°N latitude in Sakhalin), south throughout East Asia west to the Himalaya, and south to northern Australia. They also occur in sub-Saharan Africa, and in the Americas from the southeast of the USA south to Chile, there reaching their furthest south anywhere, at 47°S latitude. Major areas with no native bamboos include Europe, north Africa, western Asia, northern North America, most of Australia, and Antarctica.

Manta Ray

( Original Source : Wikipedia Encyclopedia, Photo Source : Google Images )

The manta ray, or giant manta (Manta birostris), is the largest of the rays, with the largest known specimen having been nearly 7.6 meters (25 ft) across its pectoral fins (or "wings") and weighed in at 3,000 kg (6,600 lb). It ranges throughout the tropical seas of the world, typically around coral reefs. Mantas are most commonly black above and white below, but some are blue on their backs. A giant manta's eyes are located at the base of the cephalic lobes on each side of the head, and unlike other rays the mouth is found at the anterior edge of its head. To breathe, like other rays, the manta has five pairs of gills on the underside.

With distinctive "horns" (from which the common name 'devil ray' stems), on either side of its broad head, the manta is a prized sighting by divers. These unique structures are actually derived from the pectoral fins. During embryonic development, part of the pectoral fin breaks away and moves forward, surrounding the mouth. This gives the Manta Ray the distinction of being the only jawed vertebrate to have novel limbs (the so-called six-footed tortoise (Manouria emys) does not actually have six legs, only enlarged tuberculate scales on their thighs that look superficially like an extra pair of hind limbs). These flexible horns are used to direct plankton, small fish and water into the Manta's very broad and wide mouth. To make them more streamlined when swimming, they are able to curl them up.

India Gate in New Delhi

( Original Source : Indiasite Website, Photo : Sabudi Prasetyo )

All India War Memorial
India Gate is constructed as a memorial and was built in the memory of 90,00 soldiers who laid down their lives during world war I. Located at Rajpath, India Gate is 42 m high and is popular relaxation area during the summer evenings. India Gate also act as popular pinic spot during winter. Also known as the All India War Memorial, India Gate was designed and constructed by Lutyens. He was the who is considered the chief proclaimer in designing the New Delhi plans.

The Architectural Marvel
A tour of Lutyens’ Delhi just has to kick off with the stately India Gate at the east end of the broad Janpath (earlier Kingsway) that leads to the Rashtrapati Bhawan. Another additional 13,516 names engraved on the arch and foundations form a separate memorial to the British and Indian soldiers killed on the North-West Frontier in the Afghan War of 1919. The foundation stone was laid by HRH the Duke of Connaught in 1921 and the monument was dedicated to the nation 10 years later by the then Viceroy, Lord Irwin. Another memorial, Amar Jawan Jyoti was added much later after India had said goodbye to its imperial rulers. It is in the form of a flame that burns day and night under the arch to remind the nation of soldiers who perished in the Indo-Pakistan War of December 1971.The entire arch stands on a low base of red Bharatpur stone and rises in stages to a huge cornice, beneath which are inscribed Imperial suns. Above on both sides is inscribed INDIA, flanked by MCM and to the right, XIX. The shallow domed bowl at the top was intended to be filled with burning oil on anniversaries but this is rarely done.

Jyotisar India

( Original Source : Vahini.org Website and Wikipedia Encyclopedia, Photo Source : Sabudi Prasetyo )

One of the most revered of holy centers of Kurukshetra is Jyotisar. Renovated recently, it retains its sanctity and the birthplace of the Holy Bhagwad Gita. A vat (Banyan) tree stands on a raised plinth here August, Spreading Venerated. It is believed that it was under this holy Banyan that Lord Krishna delivered the doctrine of Karma a wavering Arjun. He showed too, His Virat Roop, the image of Himself as the Creator, the Preserver, the Destroyer-under whose will every leaf, every bud, every event, every man moved as automation. A marble chariot depicting Lord Krishna delivering to Arjun marks the site the Shrimad Bhagwad Gita. In one secluded section of this center an old Shiv temple can also be seen. Hundreds of years ago, a holy water tank was built here. Today the Kurukshetra Development Board has renovated the site. A mango shaped lake has been constructed here. Covered bathing ghats for the ladies have been provided. Cement parapets and enclosures have been built for protection. A restaurant and accommodation wings of Yatrees has been built here. The area has been landscaped with flowering bushes and eucalyptus trees. Jyotisar lies on Pehowa road, 5 Km from Kurukshetra.

Bhimgoda Barrage in India

The Bhimgoda Barrage, also referred to as the Bhimgoda Weir or Bhimgoda Head Works, is a barrage on the Ganges River at Har ki Pauri near Haridwar in Haridwar district, Uttarakhand, India. Built as the headworks of the Upper Ganges Canal, an initial barrage was completed by 1854 and replaced twice; the final one completed in 1983. The primary purpose for the barrage is irrigation but it also serves to provide water for hydroelectric power production and control floods. The area behind the barrage is known as the Neel Dhara Bird Sanctuary and is a popular destination for various waterbirds and tourists. 

The barrage is 455 m (1,493 ft) long and sits at the head of a 23,000 km² (8,880 sq mi) catchment area. It contains 15 spillways gates and 7 undersluice gates, all 18 m (59 ft) wide. The flood discharge of the barrage is 19,300 m³/s (681,573 cu ft/s). Adjacent to it, on the right bank of the river, the barrage diverts water into the Upper Ganges Canal. The canal system is immense, consisting of 6,450 km (4,008 mi) of main canal and branches, providing irrigation for up to 2,023,000 ha (4,998,942 acres). At a distance of 13 km (8 mi) down the main canal, water reaches the 20.4 MW Pathri

Power Plant at 29°42′12″N 77°51′38″E. It contains three 6.8 MW Kaplan turbine-generators and has a design hydraulic head of 9.75 m (32 ft). Further down the main canal, and south of Manglaur, is the 9.3 MW Mohammadpur Power Plant at  29°42′12″N 77°51′38″E. It contains three 3.1 MW Kaplan turbine-generators and has a design head of 5.79 m (19 ft). The design discharge of both power plants is about 255 m³/s (9,005 cu ft/s). Although both power plants are owned by Uttaranchal Jal Vidyut Nigam Ltd., canal flows are regulated by the Uttar Pradesh Irrigation Department.(Original source : Wikipedia, Photo source : Sabudi Prasetyo)

Indian Institute of Technology Roorkee, India

( Original Source : IIT Roorkee Website, Photo Source : Sabudi Prasetyo )

The Indian Institute of Technology Roorkee (IIT Roorkee) is located in Roorkee, a small township in Uttarakhand, India. Instituted as Thomason college of Civil Engineering in year 1847 by British, it was rechristened as University of Roorkee in year 1949. It is acclaimed for its fine quality of academia and for producing brilliant engineers.
The Institute has completed 150th year of its existence in October 1996. On September 21, 2001, an Ordinance issued by the Government of India declared it as the nation's seventh Indian Institute of Technology. The Ordinance is now converted into an Act by the Parliament to make IIT, Roorkee as an "Institution of National Importance".

Indian Institute of Technology Roorkee is among the foremost of institutes of national importance in higher technological education and in basic and applied research. Since its establishment, the Institute has played a vital role in providing the technical manpower and know-how to the country and in pursuit of research. The Institute ranks amongst the best technological institutions in the world and has contributed to all sectors of technological development. It has also been considered a trend-setter in the area of education and research in the field of science, technology, and engineering.

The Institute offers Bachelor's Degree courses in 10 disciplines of Engineering and Architecture and Postgraduate's Degree in 55 disciplines of Engineering, Applied Science, Architecture and planning. The Institute has facility for doctoral work in all Departments and Research Centres.
The Institute admits students to B.Tech. and B.Arch. courses through the Joint Entrance Examination (JEE) conducted at various centres all over India.

Department of Water Recources Development and Management

Objective And Achievements

The proposal for establishing a training centre in water resources development originated with the United Nations Economic Commission for Asia and the Far East (now known as ESCAP) some time in 1951-52 and the Centre was actually established at the 'University of Roorkee (Now Indian Institute of Technology Roorkee)' on November25, 1955. The essential equipment was provided under the then U.S. Technical Cooperation Mission and U.N. Technical Assistance Board. The Government of India provided funds for the building and other facilities and agreed to bear the entire recurring expenditure. The USAID, UNDP and ECAFE provided specialists for short-term lecture arrangements.

The choice of opening the Centre naturally fell on India which had the unique distinction of having the biggest network of irrigation works, the largest area under irrigation and the greatest variety of irrigation structures in the East. India also had, after attainment of independence, embarked on an ambitious programme of construction of river valley projects. IIT Roorkee being successor to University of Roorkee which in turn being successor to the Thomason College of Civil Engineering the oldest and best-known technical institution in the East and having the basic infrastructure for imparting such education with Dr. A.N. Khosla as the Vice-Chancellor was selected as the location, and the Centre was set up with Dr. Khosla as the first Director. Roorkee also has the added advantage of the facilities of the U.P. Irrigation Research Institute, the Bengal Engineer Group of the Army Corps of Engineers and the National Institute of Hydrology. The country's oldest canal passes through the town of Roorkee.

Objective And Achievements
The objective of the Centre is to train serving engineers from Asia, Africa and other developing countries in various aspects of water resources engineering and to bring together engineering talent from these countries for a first hand understanding and appreciation of each other's problems and to help evolve, by pooling of knowledge, new techniques in water resources development and utilization suited to conditions of this region. In addition, the programme of education at the Centre helps foster a feeling of brotherhood amongst the engineers of these countries. Since its creation in 1951 the Centre has trained 2032 serving engineers from 38 countries in the field of Water Resources Development and Irrigation Water Management.

Mathura India

( Original Source : Wikipedia Encyclopedia, Photo Source : Sabudi Prasetyo )

The Krishna’s Birth Place, Krishna is King of Dwarka and The charioteer for Arjuna in The Epic of Mahabharata’s Battle.

Mathura (Hindi: मथुरा, Urdu: متھرا) is a holy city in the state of Uttar Pradesh in India, located approximately 50 km north of Agra, and 150 km south of Delhi. It is the administrative centre of Mathura District of Uttar Pradesh. During the ancient period, this was an economic hub, located at the junction of some relatively important caravan routes.
Mathura is the reputed to be the birthplace of Krishna, Krishnajanmabhoomi. The Keshav Dev temple was built in ancient times on the site of Krishna's supposed birthplace (an underground prison). As per epic Mahabharata, Mathura was the capital of the Surasena Kingdom, ruled by Kansa the maternal uncle of Krishna.

Dwarka is a city and a municipality in Jamnagar district in the state of Gujarat, India. Dwarka (Dvaraka in Sanskrit - this name shall be used in this article when referring to the city in a historical context) is rated as one of the seven most ancient cities in the country. The legendary city of Dvaraka in Hindu mythology was the dwelling place of Krishna. It is believed that, due to damage and destruction by the sea, Dvaraka has submerged six times and modern Dwarka is the 7th city to be built in the area. Dvaraka is mentioned in the Mahabharata, the Harivansha, the Bhagavata Purana, the Skanda Purana, and the Vishnu Purana.
Sri Krishna renounced war in Mathura for the greater good (and hence the name Ranchodrai) and founded (and settled in) Dvaraka. Sri Krishna killed Kamsa (his maternal uncle) and made Ugrasen (his maternal grandfather) the king of Mathura. Enraged, the father-in-law of Kamsa, Jarasandha (king of Magadha) with his friend Kalayavan attacked Mathura 17 times. For the safety of the people, Krishna and Yadavas decided to move the capital from Mathura to Dvaraka.
Land was reclaimed from the sea near the western shores of Saurashtra. A city was planned and built here. Dvaraka was a planned city, on the banks of Gomati River. This city was also known as Dvaramati, Dvaravati and Kushsthali. It had well organized six sectors, residential and commercial zones, wide roads, plazas, palaces and many public utilities. A hall called "Sudharma Sabha" was built to hold public meetings. The city also boasted a good harbour.

Kurukshetra India

( Original Source : Wikipedia Encyclopedia, Photo Source : Sabudi Prasetyo )

The Battlesfield of Mahabharata in The Epic of Mahabharata

Kurukshetra (Hindi: कुरुक्षेत्र) is the name of a city in the present-day Indian state of Haryana हरियाणा. The name literally means "Land of the Kurus" after the famous Kuru vansha (clan), but is also sometimes referred to as Dharam Kshetra meaning the "Land of Righteousness". It purports to be the site of the Kurukshetra war, described in the Hindu epic the Mahabharata. Nevertheless, this place holds inestimable importance in Hinduism as this is where the Bhagavad Gita ("The Song Celestial") was recited to Arjuna amidst the battle field, just before the great war of Mahabharata. A few kilometeres from Kurukshetra is the village, Amin where there are remnants of a fort and it is said to be Abhimanyu's fort.
Thanesar, a historical town is located adjacent to Kurukshetra city. "Kurukshetra" is in fact the name of a mythological battlefield, where the Mahabharata war was waged, the actual location of which is impossible to confirm. Local hearsay identifies the legendary "Kurukshetra" with a nearby obscure hamlet, and with the active abetment of the state government, it is presently experiencing a tourist boom.
In some ancient Hindu texts, the boundaries of Kurukshetra correspond roughly to the state of Haryana. The Kurukshetra region is south of Turghna (Srughna/Sugh in Sirhind, Punjab), north of Khandava (Delhi and Mewat region), east of Maru (=desert) and west of Parin.

Taj Mahal India

( Original Source : Wikipedia Encyclopedia, Photo Sources : Sabudi Prasetyo & Google Images )

The Tāj Mahal (Persian: تاج محل‎, Hindi: ताज महल) is a mausoleum located in Agra, India. The name is Persian, the court language of the Mughal empire, and can be literally translated to "Location (Mahal) of the Crown (Taj)" or alternatively, "the Crown (Taj)of Mahal (i.e. Mumtaz Mahal)"; the latter version making the most grammatical sense in Persian. The Mughal Emperor Shāh Jahān commissioned it as a mausoleum for his favourite wife, Mumtaz Mahal. Construction began in 1632 and was completed in 1648. Some dispute surrounds the question of who designed the Taj; it is clear a team of designers and craftsmen were responsible for the design, with Ustad Isa considered the most likely candidate as the principal designer.
The Taj Mahal (sometimes called "the Taj") is generally considered the finest example of Mughal architecture, a style that combines elements of Persian, Turkish and Indian. While the white domed marble mausoleum is the most familiar part of the monument, the Taj Mahal is actually an integrated complex of structures.

Origin and inspiration
Shah Jahan, emperor of the Mughal Empire during a period of great prosperity, controlled extensive resources. In 1631 his second wife died during the birth of their daughter Gauhara Begum, their fourteenth child. Shah Jahan was reportedly inconsolable. Contemporary court chronicles contain many stories concerning Shah Jahan's grief at Mumtaz's death; these are the basis of the "love-story" traditionally held as the inspiration for the Taj Mahal. 'Abd al-Hamid Lahawri, for example, noted that before her death the Emperor had "but twenty white hairs in his beard," but thereafter many more.
Construction of the Taj Mahal was begun in Agra soon after Mumtaz's death. The principal mausoleum was completed in 1648, and the surrounding buildings and garden five years later.

The tombThe focus of the Taj Mahal is the white marble tomb. Like most Mughal tombs, the basic elements are Persian in origin: a symmetrical building with an ‘iwan’, an arch-shaped doorway, topped by a large dome.
The tomb stands on a square plinth. The base structure is a large, multi-chambered structure. The main chamber houses the cenotaphs of Shah Jahan and Mumtaz (the actual graves are a level below).
The base is essentially a cube with chamfered edges, roughly 55 metres on each side (see floor plan, right). On the long sides, a massive pishtaq, or vaulted archway, frames the iwan, with a similar arch-shaped balcony above. These main arches extend above the roof of the building by use of an integrated facade.
To either side of the main arch, additional pishtaqs are stacked above and below. This motif of stacked pishtaqs is replicated on the chamfered corner areas.
The design is completely uniform and consistent on all sides of the building. Four minarets, one at each corner of the plinth, facing the chamfered corners, frame the tomb.

CalligraphyThroughout the complex passages from the Qur'an are used as decorative elements. The calligraphy is a florid and practically illegible thuluth script, created by the Mughal court's Persian calligrapher, Amanat Khan, who was resident at the Mughal court. He has signed several of the panels. As one enters through the Taj Mahal Gate the calligraphy reads "O Soul, thou art at rest. Return to the Lord at peace with Him, and He at peace with you."
The calligraphy is made by jasper inlaid in white marble panels. Some of the work is extremely detailed and delicate (especially that found on the marble cenotaphs in the tomb). Higher panels are written slightly larger to reduce the skewing effect when viewed from below.
Recent scholarship suggests that Amanat Khan chose the passages as well. The texts refer to themes of judgment: of doom for nonbelievers, and the promise of Paradise for the faithful. The passages include: Surah 91 (The Sun), Surah 112 (The Purity of Faith), Surah 89 (Daybreak), Surah 93 (Morning Light), Surah 95 (The Fig), Surah 94 (The Solace), Surah 36 (Ya Sin), Surah 81 (The Folding Up), Surah 82 (The Cleaving Asunder), Surah 84 (The Rending Asunder), Surah 98 (The Evidence), Surah 67 (Dominion), Surah 48 (Victory), Surah 77 (Those Sent Forth) and Surah 39 (The Crowds).

The garden
The complex is set in and around a large charbagh (a formal Mughal garden divided into four parts). Measuring 320 m × 300 m, the garden uses raised pathways which divide each quarter of the garden into 16 sunken parterres or flowerbeds. A raised marble water tank at the centre of the garden, halfway between the tomb and the gateway, and a linear reflecting pool on the North-South axis reflect the Taj Mahal. Elsewhere the garden is laid out with avenues of trees and fountains.

The charbagh garden was introduced to India by the first Mughal emperor Babur, a design inspired by Persian gardens. The charbagh is meant to reflect the gardens of Paradise (from the Persian paridaeza -- a walled garden). In mystic Islamic texts of the Mughal period, paradise as described as ideal garden, filled with abundance. Water plays a key role in these descriptions: In Paradise, these text say, four rivers source at a central spring or mountain, and separate the garden into north, west, south and east.

Most Mughal charbaghs are rectangular in form, with a central tomb or pavilion in the centre of the garden. The Taj Mahal garden is unusual in siting the main element, the tomb, at the end rather than at the centre of the garden. But the existence of the newly discovered Mahtab Bagh or "Moonlight Garden" on the other side of the Yamuna provides a different interpretation -- that the Yamuna itself was incorporated into the garden's design, and was meant to be seen as one of the rivers of Paradise.

The layout of the garden, and its architectural features such as its fountains, brick and marble walkways, geometric brick-lined flowerbeds, and so on, are similar to Shalimar's, and suggest that the garden may have been designed by the same engineer, Ali Mardan.
Early accounts of the garden describe its profusion of vegetation, including roses, daffodils, and fruit trees in abundance. As the Mughal Empire declined, the tending of the garden declined as well. When the British took over management of the Taj Mahal, they changed the landscaping to resemble more the formal lawns of London.

Outlying buildingsThe Taj Mahal complex is bounded by a crenellated red sandstone wall on three sides. The river-facing side is unwalled. Outside the wall are several additional mausoleums, including those of many of Shah Jahan's other wives, and a larger tomb for Mumtaz's favourite servant. These structures, composed primarily of red sandstone, are typical of smaller Mughal tombs of the era.

On the inner (garden) side, the wall is fronted by columned arcades, a feature typical of Hindu temples later incorporated into Mughal mosques. The wall is interspersed with domed kiosks (chattris), and small buildings which may have been viewing areas or watch towers (such as the so-called Music House, now used as a museum).

The main gateway (darwaza) is a monumental structure built primarily of red sandstone. The style is reminiscent of that of Mughal architecture of earlier emperors. Its archways mirror the shape of the tomb's archways, and its pishtaq arches incorporate the calligraphy that decorates the tomb. It utilises bas-relief and pietra dura (inlaid) decorations with floral motifs. The vaulted ceilings and walls have elaborate geometric designs, like those found in the other sandstone buildings of the complex.
At the far end of the complex, two grand red sandstone buildings open to the sides of the tomb. Their backs parallel the western and eastern walls.

The two buildings are precise mirror images of each other. The western building is a mosque; its opposite is the jawab or "answer", whose primary purpose was architectural balance (and which may have been used as a guesthouse during Mughal times). The distinctions are that the jawab lacks a mihrab, a niche in a mosque's wall facing Mecca, and the floors of the jawab have a geometric design, while the mosque floor was laid out the outlines of 569 prayer rugs in black marble. The mosque's basic design is similar to others built by Shah Jahan, particularly to his Jama Masjid in Delhi: a long hall surmounted by three domes. Mughal mosques of this period divide the sanctuary hall into three areas: a main sanctuary with slightly smaller sanctuaries to either side. At the Taj Mahal, each sanctuary opens on to an enormous vaulting dome.

Jama Masjid of Delhi

( Original Source : Wikipedia Encyclopedia, Photo Source : Sabudi Prasetyo )

The Masjid-i-Jahan Numa مسجد جھان نمہ, commonly known as Jama Masjid of Delhi is the principal mosque of Old Delhi in India. Commissioned by the Mughal Emperor Shah Jahan and completed in the year 1656 AD, it is one of the largest and best known mosques in India. It is also at the beginning of a very busy and popular street/center in Old Delhi, Chandni Chowk. (There are also Jama Masjids in many other cities with a history of Islamic rule, or large Muslim populations.)
Masjid-i-Jahan Numa means "the mosque commanding a view of the world", and the name Jama Masjid is a reference to the weekly congregation observed on Friday (the yaum al-jum`a) at the mosque. The courtyard of the mosque can hold up to twenty-five thousand worshippers. The mosque also houses several relics in a closet in the north gate, including a copy of the Qur'an written on deer skin. The cost incurred on the construction in those times was 10 lakh (1 million) Rupees.
Shah Jahan built several important mosques in Delhi, Agra, Ajmer and Lahore. The Jama Masjid's floorplan is very similar to the Moti Masjid at Agra, but the Jama Masjid is the bigger and more imposing of the two. Its majesty is further enhanced because of the high ground that he selected for building this mosque.

Architecture
The courtyard of the mosque can be reached from the east, north and south by three flights of steps, all built of red sandstone. The northern gate of the mosque has 39 steps. The southern side of the mosque has 33 steps. The eastern gate of the mosque was the royal entrance and it has 35 steps. These steps used to house food stalls, shops and street entertainers. In the evening, the eastern side of the mosque used to be converted into a bazaar for poultry and birds in general. Prior to the 1857 War of Indian Independence, there was a madrassah near the southern side of the mosque, which was pulled down after the mutiny.

The mosque faces west. Its three sides are covered with open arched colonnades, each having a lofty tower-like gateway in the centre. The mosque is about 261 feet (80 m) long and 90 feet (27 m) wide, and its roof is covered with three domes with alternate stripes of black and white marble, with its topmost parts covered with gold. Two lofty minarets, 130 feet (40 m) high, and containing 130 steps, longitudinally striped with white marble and red sandstone, flank the domes on either side. The minarets are divided by three projecting galleries and are surmounted by open twelve-sided domed pavilions. On the back of the mosque, there are four small minarets crowned like those in the front.

Under the domes of the mosque, is a hall with seven arched entrances facing the west and the walls of the mosque, up to the height of the waist, are covered with marble. Beyond this is a prayer hall, which is about 61 meters X 27.5 meters, with eleven arched entrances, of which the centre arch is wide and lofty, and in the form of a massive gateway, with slim minarets in each corner, with the usual octagonal pavilion surmounting it. Over these arched entrances there are tablets of white marble, four feet (1.2 m) long and 2.5 feet (760 mm) wide, inlaid with inscriptions in black marble. These inscriptions give the history of the building of the mosque, and glorify the reign and virtues of Shah Jahan. The slab over the centre arch contains simply the words "The Guide!"

The mosque stands on a platform of about five feet (1.5 m) from the pavement of the terrace, and three flight of steps lead to the interior of the mosque from the east, north, and the south. The floor of the mosque is covered with white and black marble ornamented to imitate the Muslim prayer mat; a thin black marble border is marked for the worshippers, which is three feet long and 1 ½ feet wide. In total there are 899 such spaces marked in the floor of the mosque. The back of the mosque is cased over to the height of the rock on which the mosque stands with large hewn stones.

Ganga River India

( Original Source : Wikipedia Encyclopedia, Photo Sources : Sabudi Prasetyo )

The Ganges (Devanāgarī: गंगा) (Ganga (IPA: [ˈgænʤiz]; IAST: Gaṅgā in most Indian languages, IPA: [ˈgəŋgaː]) is a major river in the Indian subcontinent passing though most of northern India and Bangladesh. The 2,510 km (1,557 mi) long river begins at the Gangotri Glacier in the state of Uttarakhand in the Central Himalayas, passes though the plains in northern India before draining into the Bay of Bengal in Bangladesh. The river, held sacred by Hindus, is worshipped as the personified form of the goddess Ganga after whom the river is named.
Along with several other tributaries, it forms a large and fertile basin of about one million square kilometres in area which supports one of the highest densities of human population in the world.

Course
The Ganges originates in the Himalayas at the confluence of five headstreams – the Bhagirathi, Mandakini, Alaknanda, Dhauliganga, and Pindar at Devaprayag in the Indian state of Uttarakhand. Out of the five, the Bhagirathi is held to be the source stream originating at the Gangotri Glacier at an elevation of 7,756 m (25,446 ft). The streams are fed by melting snow and ice from glaciers including glaciers from peaks such as Nanda Devi and Kamet.
After travelling 200 km through the Himalayas, the Ganges emerges at the pilgrimage town of Haridwar in the Shiwalik Hills. At Haridwar, a dam diverts some of its waters into the Ganges Canal, which links the Ganges with its main tributary, the Yamuna. The Ganges which till this point flows in a south-western direction now begins to flow in a south-eastern direction through the plains northern India.

From Haridwar the river follows an 800 km (500 mi) winding course passing through the city of Kanpur, before being joined by the Yamuna from the southwest at Allahabad. This point, known as the Sangam, is a sacred place in Hinduism. According to ancient Hindu texts, a third river, the mythical Sarasvati River is believed to meet the two rivers at this point.

Joined by numerous rives such as the Kosi, Son, Gandak and Ghaghra, the Ganges forms a formidable current in the stretch between Allahabad and Malda in West Bengal. On its way it passes the towns of Mirzapur, Varanasi, Patna and Bhagalpur. At Bhagalpur, the river meanders past the Rajmahal Hills, and beings to change course southwards. At Pakaur, the river begins its first attrition with the branching away of it's first distributary, the River Bhagirathi, which goes on to form the River Hooghly. Close to the border with Bangladesh, the Farakka Barrage, built in 1974 controls the flow of the Ganges, diverting some of the water into a feeder canal linking the Hooghly to keep it relatively silt free. After entering Bangladesh, the main branch of the Ganges is known as Padma River till it is joined by the Jamuna River the largest distributary of the Brahmaputra. Further downstream, the Ganges is fed by the Meghna River, the second largest distributary of the Brahmaputra and takes on its name. Fanning out into the 350 km (220 mi) wide Ganges Delta, it empties out into the Bay of Bengal. Only two rivers, the Amazon and Congo have a higher discharge.

Religious significance
According to Hindus the river Ganga (feminine) is sacred. It is worshipped by Hindus and personified as a goddess, who holds an important place in the Hindu religion. Hindu belief holds that bathing in the river on certain occasions causes the forgiveness of sins and helps attain salvation. Many people believe that this will come from bathing in Ganga at any time. People travel from distant places to immerse the ashes of their kin in the waters of the Ganga; this immersion also is believed to send the ashes to heaven. Several places sacred to Hindus lie along the banks of the river Ganga, including Haridwar and Kashi. People carry sacred water from the Ganges that is sealed in copper pots after making the pilgrimage to Kashi. It is believed that drinking water from the Ganga with one's last breath will take the soul to heaven.

Hindus also believe life is incomplete without bathing in the Ganga at least once in their lifetime. In most Hindu families, a vial of water from the Ganga is kept in every house. This is done because it is auspicious to have water of the Holy Ganga in the house, and also if someone is dying, that person will be able to drink its water. Many Hindus believe that the water from the Ganga can cleanse a person's soul of all past sins, and that it can also cure the ill. The ancient scriptures mention that the water of Ganges carries the blessings of Lord Vishnu's feet; hence Mother Ganges is also known as Vishnupadi, which means "Emanating from the Lotus feet of Supreme Lord Sri Vishnu."

Some of the most important Hindu festivals and religious congregations are celebrated on the banks of the river Ganga such as the Kumbh Mela and the Chhat Puja.
It has hundreds of temples along the banks of the Ganga which often get flooded during the rains. This city, especially along the banks of the Ganga, is an important place of worship for the Hindus as well as a cremation ground.

Himalaya India

The Himalayas (Sanskrit: हिमालय), also Himalaya (Sanskrit: हिमालय), (IPA pronunciation: [hɪ'mɑlijə], [ˌhɪmə'leɪjə]) are a mountain range in Asia, separating the Indian subcontinent from the Tibetan Plateau. By extension, it is also the name of the massive mountain system which includes the Himalaya proper, the Karakoram, the Hindu Kush, and a host of minor ranges extending from the Pamir Knot. The name is from Sanskrit himālaya, a tatpurusa compound meaning "the abode of snow" (from hima "snow", and ālaya "abode"; see also Himavat).

Together, the Himalaya mountain system is the planet's highest and home to the world's highest peaks: the Eight-thousanders, including Mount Everest. To comprehend the enormous scale of Himalayan peaks, consider that Aconcagua, in the Andes, at 6,962 m, is the highest peak outside the Himalaya, while the Himalayan system has over 100 separate mountains exceeding 7,200 meters.
The Himalayas stretch across six nations: Bhutan, China, India, Nepal, Pakistan and Afghanistan. It is the source of three of the world's major river systems, the Indus Basin, the Ganga-Brahmaputra Basin and the Yangtze Basin. An estimated 750 million people live in the watershed area of the Himalayan rivers, which also includes Bangladesh.

GeographyThe Himalaya range runs for about 2,400 km, from Nanga Parbat (Pakistan) in the west to Namche Barwa in the east. The width varies between 250-300 km. The Himalayan range comprises three parallel ranges, arranged by elevation and geological age.The youngest of the three is called the Sub-Himalayan Range (Shivalik Hills) and has an elevation of about 1,200 m. This range is made up of erosion material from the rising Himalaya. Running parallel to this is the Lower Himalayan Range, which has an elevation between 2,000-5,000 m. The northernmost range is called the Great Himalayas and is also the oldest of the three. It has an elevation of more than 6,000 m and contains a large number of the world's highest peaks including the three highest, Mount Everest, K2 and Kangchenjunga. Much of Nepal and Bhutan lies in the Himalaya. The Pakistani state of Baltistan, and the Indian states of Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim and Arunachal Pradesh lie mostly in the Himalaya. A very small portion of southeastern Tibet also lies in the Himalaya. (However, the Tibetan Plateau is by definition beyond the Himalaya, and thereby not part of it). It is in fact just north of India and Bangladesh.

Ecology The flora and fauna of the Himalayas varies with climate, rainfall, altitude, and soils. The climate ranges from tropical at the base of the mountains to permanent ice and snow at the highest elevations. The amount of yearly rainfall increases from west to east along the front of the range. This diversity of climate, altitude, rainfall and soil conditions generates a variety of distinct plant and animal communities, or ecoregions.
( Original Source : Wikipedia Encyclopedia, Photo Source : Sabudi Prasetyo )

Bee (trigona minima)

( Original Source : Wikipedia Encyclopedia, Photo Source : Google Images )

Bees are flying insects, closely related to wasps and ants. Bees are a monophyletic lineage within the superfamily Apoidea, presently classified by the unranked taxon name Anthophila. There are slightly fewer than 20,000 known species of bees, though many are undescribed and the actual number is probably higher. They are found on every continent except Antarctica.
Many species of bees are poorly known. The smallest bee is the dwarf bee (Trigona minima) and it is about 2.1 mm (5/64") long. The largest bee in the world is Megachile pluto, which can be as large as 39 mm (1.5"). The most common type of bee in the Northern Hemisphere are the many species of Halictidae, or sweat bees, though this may come as a surprise to people, as they are small and often mistaken for wasps or flies. The most well-known bee species is the Western honey bee, which, as its name suggests, produces honey, as do a few other types of bee. Human control of this species is known as beekeeping or apiculture.
Bees are adapted for feeding on nectar and pollen, the former primarily as an energy source, and the latter primarily for protein and other nutrients. Most pollen is used as food for larvae.

Bees have a long proboscis that enables them to obtain the nectar from flowers. Bees have antennae almost universally made up of thirteen segments in males and twelve in females, as is typical for the superfamily. They all have two pairs of wings, the back pair being the smaller of the two; in a very few species, one sex or caste has relatively short wings that make flight difficult or impossible, but none are wingless.

Pollination
Bees play an important role in pollinating flowering plants, and are the major type of pollinators in ecosystems that contain flowering plants. Bees may focus on gathering nectar or on gathering pollen, depending on their greater need at the time. Bees gathering nectar may accomplish pollination, but bees that are deliberately gathering pollen are more efficient pollinators. It is estimated that one third of the human food supply depends on insect pollination, most of this accomplished by bees.

Most bees are fuzzy and carry an electrostatic charge, thus aiding in the adherence of pollen. Female bees periodically stop foraging and groom themselves to pack the pollen into the scopa, which is on the legs in most bees, and on the ventral abdomen on others, and modified into specialized pollen baskets on the legs of honey bees and their relatives. Many bees are opportunistic foragers, and will gather pollen from a variety of plants, but many others are oligolectic, gathering pollen from only one or a few types of plant. A small number of plants produce nutritious floral oils rather than pollen, which are gathered and used by oligolectic bees. One small subgroup of stingless bees (called "vulture bees") is specialized to feed on carrion, and these are the only bees that do not use plant products as food. Pollen and nectar are usually combined together to form a "provision mass", which is often soupy, but can be firm. It is formed into various shapes (typically spheroid), and stored in a small chamber (a "cell"), with the egg deposited on the mass. The cell is typically sealed after the egg is laid, and the adult and larva never interact directly (a system called "mass provisioning").

Bees are extremely important as pollinators in agriculture, especially the domesticated Western honey bee, with contract pollination having overtaken the role of honey production for beekeepers in many countries. Monoculture and pollinator decline have increasingly caused honey bee keepers to become migratory so that bees can be concentrated in areas of pollination need at the appropriate season. Many other species of bees are increasingly cultured and used to meet the agricultural pollination need. Bees also play a major, though not always understood, role in providing food for birds and wildlife. Many of these bees survive in refuge in wild areas away from agricultural spraying, only to be poisoned in massive spray programs for mosquitoes, gypsy moths, or other pest insects.

Visiting flowers is a dangerous occupation with high mortality rates. Many assassin bugs and crab spiders hide in flowers to capture unwary bees. Others are lost to birds in flight. Insecticides used on blooming plants can kill large numbers of bees, both by direct poisoning and by contamination of their food supply. A honey bee queen may lay 2000 eggs per day during spring buildup, but she also must lay 1000 to 1500 eggs per day during the foraging season, simply to replace daily casualties. The population value of bees depends partly on the individual efficiency of the bees, but also on the population itself. Thus, while bumblebees have been found to be about ten times more efficient pollinators on cucurbits, the total efficiency of a colony of honey bees is much greater, due to greater numbers. Likewise, during early spring orchard blossoms, bumblebee populations are limited to only a few queens, thus they are not significant pollinators of early fruit.

Evolution
Bees, like ants, are essentially a highly specialized form of wasp. The ancestors of bees were wasps in the family Crabronidae, and therefore predators of other insects. The switch from insect prey to pollen may have resulted from the consumption of prey insects that were flower visitors and were partially covered with pollen when they were fed to the wasp larvae. This same evolutionary scenario has also occurred within the vespoid wasps, where the group known as "pollen wasps" also evolved from predatory ancestors. The oldest bee fossil, of the genus Melittosphex, is 100 million years old and supports the theory that bees evolved from wasps, and subsequently evolved alongside flowers. The earliest animal pollinated flowers were pollinated by insects such as beetles, so the syndrome of insect pollination was well established before bees first appeared. The novelty is that bees are specialized as pollination agents, with behavioral and physical modifications that specifically enhance pollination, and are much more efficient at the task than beetles, flies, butterflies, pollen wasps, or any other pollinating insect. The appearance of such floral specialists is believed to have driven the adaptive radiation of the angiosperms, and, in turn, the bees themselves.

Harry Potter and the Order of the Phoenix

( Original Source : Yahoo! Movies )

As his fifth year at Hogwarts School of Witchcraft and Wizardry approaches, 15-year-old Harry Potter is in full-blown adolescence, complete with regular outbursts of rage, a nearly debilitating crush, and the blooming of a powerful sense of rebellion. It's been yet another infuriating and boring summer with the despicable Dursleys, this time with minimal contact from our hero's non-Muggle friends from school. Harry is feeling especially edgy at the lack of news from the magic world, wondering when the freshly revived evil Lord Voldemort will strike. Returning to Hogwarts will be a relief--or will it?

Production Status : In Production/Awaiting Release
Genres : Action/Adventure, Kids/Family, Romance, Science Fiction/Fantasy and Adaptation
Release Date : July 13th, 2007 (wide)
Distributors : Warner Bros. Pictures Distribution
Production Co. : Wigram Productions, 1492 Pictures, Heyday Films
Studios : Warner Bros. Pictures, Inc.
Produced in : United Kingdom

Nagarjuna Sagar Dam in India

( Original Source : Andhra Pradesh Tourism Website )

There would be very few modern constructions you will come across that evoke such a response. A feeling of awe and significance overcomes you when you lay eyes upon the Nagarjuna Sagar Dam for the first time. Its sheer size and magnitude leaves you breathless and astounded. As the tallest and largest masonry dam in the world, truly stands as one of the wonders of engineering excellence. Stretching across the mighty river Krishna, the barrage also has another distinction to its credit - it has created one of the world's largest man-made lake! The reservoir is a vital source of irrigation for vast tracts of the surroundings region. The two left and right canals, called Bahadur Canal and Jawahar canal respectively, cater to the watering needs of a very large area of the state. Successfully transforming a barren, thirsty land into a lush verdant landscape with acres and acres of green fields swaying in the breeze as far as the eye can see. Naturally, it has played a leading role in helping the state of Andhra Pradesh emerge as' the Rice Bowl of India'.

Significantly, the creation of this lake has submerged the excavations that were carried out here in 1926 which unearthed three historical sites- Dhanyakataka, capital of the Satavahanas; Sriparvata, Vijayapuri, capital of the Ikshvakus and a Buddist civilization that thrived here in the third and fourth centuries B.C. What is of special interest to historians is the fact that the excavations also revealed the existence of Brahmanical temples here which indicates that Hinduism and Buddhism flourished together in peaceful co-existence.

Wolverine (gulo gulo)

( Original Source : Nationalgeographic Website )

The wolverine is a powerful animal that resembles a small bear but is actually the largest member of the weasel family. These tough animals are solitary, and they need a lot of room to roam. Individual wolverines may travel 15 miles (24 kilometers) in a day in search of food. Because of these habitat requirements, wolverines frequent remote boreal forests, taiga, and tundra in the northern latitudes of Europe, Asia, and North America. Wolverines eat a bit of vegetarian fare, like plants and berries, in the summer season, but this does not make up a major part of their diet—they are tenacious predators with a taste for meat. Wolverines easily dispatch smaller prey, such as rabbits and rodents, but may even attack animals many times their size, such as caribou, if the prey appears to be weak or injured. These opportunistic eaters also feed on carrion—the corpses of larger mammals, such as elk, deer, and caribou. Such finds sustain them in winter when other prey may be thinner on the ground, though they have also been known to dig into burrows and eat hibernating mammals.

Males scent-mark their territories, but they share them with several females and are believed to be polygamous. Females den in the snow or under similar cover to give birth to two or three young each late winter or early spring. Kits sometimes live with their mother until they reach their own reproductive age—about two years old. Wolverines sport heavy, attractive fur that once made them a prime trapper's target in North America. Their fur was used to line parkas, though this practice is far less common today and the animals are protected in many areas.

Type: Mammal
Diet: Omnivore
Average lifespan in the wild: 7 to 12 years
Size: Head and body, 26 to 34 in (66 to 86 cm); Tail, 7 to 10 in (18 to 25 cm)
Weight: 24 to 40 lbs (11 to 18 kg)
Size relative to a 6 ft (2 m) man

Solar Energy

Renewable energy sources Mass production of electricity from renewable energy flows requires technology that harnesses the power of natural phenomena such as sunlight, wind, tides and geothermal heat. Each of these sources has unique characteristics which influence how and where they are used.

The majority of renewable energy technologies are directly or indirectly powered by the Sun. The Earth-Atmosphere system is in equilibrium such that heat radiation into space is equal to incoming solar radiation, the resulting level of energy within the Earth-Atmosphere system can roughly be described as the Earth's "climate". The hydrosphere (water) absorbs a major fraction of the incoming radiation. Most radiation is absorbed at low latitudes around the equator, but this energy is dissipated around the globe in the form of winds and ocean currents. Wave motion may play a role in the process of transferring mechanical energy between the atmosphere and the ocean through wind stress (Sorensen, 2004). Solar energy is also responsible for the distribution of precipitation which is tapped by hydroelectric projects, and for the growth of plants used to create biofuels. In this context, "solar energy" refers to energy that is collected from sunlight. However, most fossil and renewable energy sources are ultimately derived from "solar energy," so some ascribe much broader meanings to the term.

Solar energy can be applied in many ways, including to : 1. Generate electricity using photovoltaic solar cells. 2. Generate electricity using concentrated solar power. 3. Generate electricity by heating trapped air which rotates turbines in a Solar updraft tower. 4. Heat buildings, directly. Careful positioning of windows and use of brises soleil can maximise inflow of light at the times it is most needed, heating the building while preventing overheating during midday and summer. 5. Heat foodstuffs, through solar ovens. 6. Heat water or air for domestic hot water and space heating needs using solar-thermal panels. 7. Heat and cool air through use of solar chimneys. 8. Generate electricity using Space Solar Power Satellite in geostationary orbit and beam it down via microwaves.

The sun does not provide constant energy to any spot on the Earth, so its uninterrupted use on Earth requires a means for energy storage. This is typically accomplished by battery storage. However, battery storage implies energy losses. Some homeowners use a grid-connected solar system that feeds energy to the grid during the day and draw energy from the grid at night; this way no energy is expended for storage. Batteries provide direct current (DC), whereas most household appliances run off alternating current (AC). Conversion from DC to AC leads to some energy loss.

Advantages from solar energy sources include the inexhaustible supply of energy and zero emissions of greenhouse gas and air pollutants. Shortcomings include, depending on application : 1. Economic competitiveness with conventional energy conversion 2. Intermittency; it is not available at night or during heavy cloud cover. 3. For photovoltaics (solar-electric), the current generated is only of DC type, and must be converted if transmission over the standard AC grid is needed. ( Original Source : Wikipedia Encyclopedia, Photo Source : Google Images )

Batik

( Original Source : Wikipedia Encyclopedia, Photo Source : Google Images )

Batik or batique is an Indonesian-Malay word and refers to a generic wax-resist dyeing technique used on textile. The word originates from Malay word for dot or point, "titik" and the Javanese word "amba", meaning ”to write”. The island of Java in Indonesia is famous for batik. Melted wax is applied to cloth before being dipped in dye. Wherever the wax has seeped through the fabric, the dye will not penetrate. Sometimes several colors are used, with a series of dyeing, drying and waxing steps. Thin wax lines are made with a tjanting needle, wooden handled tool with a tiny metal cup with a tiny spout, out of which the wax seeps. Other methods of applying the wax onto the fabric include pouring the liquid wax, painting the wax on with a brush, and applying the hot wax to precarved wooden or metal wire block and stamping the fabric.

After the last dyeing, the fabric is hung up to dry. Then it is dipped in a solvent to dissolve the wax, or ironed between paper towels or newspapers to absorb the wax and reveal the deep rich colors and the fine crinkle lines that give batik its character. The invention of the copper block or tjap developed by the Javanese in the 20th century revolutionised batik production. It became possible to make high quality designs and intricate patterns much faster than one could possibly do by hand-painting. As compared to Indonesian batik, which are mystic-influenced and carry illustrations of animals and people, Malaysian batik have brighter hues and more versatile patterns.

Tulip

( Original Source : Wikipedia Encyclopedia, Photo Source : Google Images )

Tulip (Tulipa) is a genus of about 100 species of flowering plants in the family Liliaceae. They are native to southern Europe, north Africa, and Asia from Anatolia and Iran (where the flower is suggested on the nation's flag) east to northeast China and Japan. The centre of diversity of the genus is in the Pamir and Hindu Kush mountains and the steppes of Kazakhstan.

They are perennial bulbous plants growing to 10–70 centimetres (4–27 in) tall, with a small number of strap-shaped, waxy-textured, usually glaucous green leaves and large flowers with six tepals. The fruit is a dry capsule containing numerous flat disc-shaped seeds.


Cultivation
Tulips cannot be grown in the open in tropical climates, as they require a cold winter season to grow successfully. Manipulation of the tulip's growing temperature can, however, allow growers to "force" tulips to flower earlier than they normally would.

Some historical cultivars have had a striped, "feathered", "flamed", or variegated flower, as in the illustration below. While some modern varieties also display multicoloured patterns, this results from a natural change in the upper and lower layers of pigment in the tulip flower. Historical variegated varieties - such as those admired in the Dutch tulipomania gained their delicately feathered patterns from an infection with Tulip Breaking potyvirus. The mosaic virus is carried by green peach aphids, Myzus persicae, an insect common in European gardens of the seventeenth century, in which peach trees were often a prominent feature. While the virus produces fantastically beautiful flowers, it also causes the plant to sicken and die slowly. Today, it has been almost completely eradicated from growers' fields. The Black Tulip was the title of a historical romance by Alexandre Dumas (1850), in which the city of Haarlem has a reward outstanding for the first grower who can produce a truly black tulip. This fascination with growing a black tulip, a biologically impossible task, was historically accurate to the tulipomania in which the novel is set.

Tulips can be grown in either of two ways: through offsets or seed. Being genetic clones of the parent plant, offsets are the only way to enlarge the stock of a given tulip cultivar. By contrast, tulips do not come true from seed; the mixing of genes between parent tulips is very unpredictable. A tulip grown from seed will usually bear only a passing resemblance to the flower from which the seeds were taken. This makes for great potential in breeding new tulip flowers, and great variation in the wild. However, tulip growers must be patient: offsets often take at least a year to grow to sufficient size to flower, and a tulip grown from seed will not flower for anywhere between five and seven years after planting. "Broken" tulips (tulips affected by the mosaic virus) will occasionally revert to plain "breeder" colouring, but usually maintain their colourful, infected state when grown from offsets.

Introduction to Western Europe
It is unclear who first brought the flower to northwest Europe. The most widely accepted story is that of Oghier Ghislain de Busbecq, Ambassador from Ferdinand I to Suleyman the Magnificent of the Ottoman Empire in 1554. He remarks in a letter upon seeing "an abundance of flowers everywhere; Narcissus, hyacinths, and those which in Turkish Lale, much to our astonishment, because it was almost midwinter, a season unfriendly to flowers" (see Busbecq, qtd. in Blunt, 7). By 1559, an account was given by Conrad Gessner of seeing tulips flowering in the garden of Councilor Herwart in Augsburg, Bavaria. Due to the very nature of the tulip's growing cycle, if the bulbs are to be removed from the ground, it generally occurs in June, and they must be replanted again by September to endure the winter, Busbecq's account of the supposed first sighting of tulips by a European is likely spurious. While possible, it is doubtful that Busbecq could successfully have had the tulip bulbs removed, shipped, and replanted between his first sighting of them in March 1558 and Gessner's description in 1559. After introduction of the Tulip to Europe, it is believed to gain much popularity and shown as a sign of abundance and indulgence in the Ottoman Empire, The era which the Empire was wealthiest is called the Tulip Era, in Turkish Lale Devri.

Another oft-quoted account is that of Lopo Vaz de Sampayo, governor of the Portuguese possessions in India. Having been brought home in disgrace after usurping his position from the rightful governor, Sampayo supposedly took tulip bulbs with him from Sri Lanka. This tale too, however, does not hold up to scrutiny; tulips do not occur in Sri Lanka, and the island itself is far from the route Sampayo's ships should have taken.

Regardless of how the flower originally arrived in Europe, its popularity soared quickly. Charles de L'Ecluse (Clusius) is responsible for much of the spread of tulip bulbs in the final years of the sixteenth century. He was the author of the first major work on tulips, finally completed in 1592. Clusius had already begun to note and remark upon the diseased variations in colour that made the tulip so admired. His taste for tulips quickly spread to others. While occupying a chair in the medical faculty of the University of Leiden, Clusius planted both a teaching garden and his own private plot with tulip bulbs. In 1596 and 1598, however, Clusius suffered thefts from his garden, with over a hundred bulbs stolen in a single raid. Between 1634 and 1637, the early enthusiasm for the new flowers triggered a speculative frenzy now known as the tulip mania and tulip bulbs were then considered a form of currency. The Netherlands and tulips are still associated with one another. The term 'Dutch tulips' is often used for the cultivated forms.

Boomerang

( Original Source : Wikipedia Encyclopedia, Photo Source : Google Images )

A boomerang is a simple wooden implement used for various purposes. It is primarily attributed to Australian Aborigines, but other forms are found amongst peoples of North East Africa, Arizona Indians and in India. It comes in many shapes and sizes depending on its geographic/tribal origins and intended function. The most recognizable type is the returning boomerang, a kind of Throwing Stick that, when thrown correctly, travels in a curved path and returns to its point of origin. Other types of boomerang are of the non-returning sort, and indeed, some are not thrown at all but are used in hand-to-hand combat by Aboriginal people Boomerangs can be variously used as hunting weapons, percussive musical instruments, battle clubs, fire-starters, decoys for hunting waterfowl, and as recreational playthings. The smallest boomerang may be less than 10 cm from tip-to-tip, and the largest over 2 meters in length. Tribal boomerangs may be incised and/or painted with designs meaningful to its maker. Most boomerangs seen today are of the tourist or competition sort, and are almost invariably of the returning type.

History
Boomerang-like devices, including hunting sticks, have been used all over the world for hunting, religious and recreational activities. Their origin is still not fully clear. Research has shown that ancient tribes in Europe used special throwing axes. Also, in ancient Egypt a special type of stick was exclusively used by the pharaohs for hunting birds. However, the world famous "country of the boomerang" is Australia, where the Australian Aborigines have used both boomerangs and hunting sticks for many thousands of years. The name of the boomerang comes from the Indigenous Australian Turuwal tribe of Aborigines who lived south of Sydney, Australia.

Today, boomerangs are most used as sporting items. There are different types of throwing contests: accuracy of return; aussie round; trick catch; maximum time aloft; fast catch; and endurance (See below). The modern sport boomerang (often referred to as a 'boom' or 'rang'), is made of Finnish birch plywood, hardwood, plastic or composite materials and comes in many different shapes and colors. Most sport boomerangs typically weigh less than 100 grams, with MTA boomerangs (boomerangs used for the maximum time aloft event) often under 25 grams.

Design
A returning boomerang is an airfoil. Though it is not a requirement that the boomerang be in its traditional shape, it is usually flat. A falling boomerang starts spinning and most then fall in a spiral. When the boomerang is thrown with high spin, the wings produce lift. Larger boomerangs are used in hunting, thus they drop on the ground after striking the target. Smaller ones are used in sport, and are the only boomerangs that return to the thrower. Because of its rapid spinning, a boomerang flies in a curve rather than a straight line. When thrown correctly, a boomerang returns to its starting point.

Now in more detail
Returning boomerangs consist of two or more arms or wings, connected at an angle. Each wing is shaped as an airfoil, air travels faster over one surface of an airfoil than the other, as the air is accelerated due to the curvature, thus creating lift, along what is roughly a plane which intersects the airfoil at a near right angle along the long axis of the wing.

These wings are set so that the lift created by each wing opposes the lift of the other, but at an angle such that the flight pattern is constantly shifted as the forces of lift, drag, speed, rotational inertia etc. 'attempt' to reach equilibrium, see Boomerang engineer.

This is what makes the boomerang 'return gracefully to the thrower, fluttering to a stop in his hand'... when thrown correctly. This is also what makes the boomerang 'rocket straight up into the air before plunging to its shattered doom'... when thrown incorrectly. With the exception of long-distance boomerangs, they should not be thrown sidearm or like a frisbee, but rather throw with the long axis of the wings rotating in an almost-vertical plane.

Fast Catch boomerangs usually have three symmetrical wings (in the planform view), whereas a Long Distance boomerang is most often shaped very similar to a question mark. Maximum Time Aloft boomerangs have one wing considerably longer than the other. This feature, along with carefully executed bends and twists in the wings, help to set up an 'auto-rotation' effect to maximize the boomerang's hover-time in descending from its highest point in the flight.

Basic throwing instructions
A right-handed boomerang circles towards the left, a left-handed boomerang circles towards the right. Most sport boomerangs are in the range of 2.5 to about 4 ounces. The range on most of these is between 25 - 40 yards (or meters)

A right or left handed boomerang can be thrown with either hand, but the flight direction will depend upon the boomerang, not the thrower. Throwing a boomerang with the wrong handedness requires a throwing motion that will feel awkward to many throwers. Beginners should thus take care to get a boomerang with the right handedness.

Grasp one wing of the boomerang nearly vertically so that the other wing points forward and the flat side is away from you. The other way works also, but this way is usually easier to learn. Holding the tip by just the end between your thumb and one or two fingers, launch the boomerang forward quickly while trying more for spin than for very much force.

The boomerang should flatten out on its own and arc around, sometimes coming to rest a little in front of the thrower or behind the thrower, but ideally it should hover gently and allow the thrower to catch it as a sort of "boomerang sandwich" between the thrower's hands.

One should not throw a returning boomerang level, like a flying disc. The boomerang will turn in the direction of the top of its airfoils, so if that direction happens to be up rather than to the side it may fly high enough that the landing causes damage to the boomerang or whatever it lands on.