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Iguassu Falls, “an ocean plunging into an abyss” on the border between Argentina and Brazil. The waterfall system consists of 275 falls along 2.7 kilometers (1.67 miles) of the Iguassu River. Position is at latitude (DMS): 25° 40' 60 S, longitude (DMS): 54° 25' 60 W . Some of the individual falls are up to 82 meters (269 ft) in height, though the majority are about 64 metres (210 ft). The Garganta del Diablo (Devil's Throat; Garganta do Diabo in Portuguese), a U-shaped 82-meter-high, 150-meter-wide and 700-meter-long (490 by 2300 feet) cliff, is the most impressive of all, and marks the border between Argentina and Brazil. Two thirds of the falls are within Argentine territory. [1] About 900 metres of the 2.7-kilometer length does not have water flowing over it. The edge of the basalt cap recedes only 3 mm per year. The water of the lower Iguassu collects in a canyon that drains into the Parana River in Argentina, shortly downstream from the Itaipu dam.

The Lunar Roving Vehicle, used on the Apollo 15, 16, and 17 missions. Built by Boeing largely of aluminum alloy, the vehicle was designed to carry two astronauts and their tools, instruments, and lunar samples up to a total payload of 490 kg (1,080 pounds), which was more than twice its own weight; nevertheless, it could be folded into a space 1.5 metres (5 feet) wide and 0.5 metre (20 inches) thick for stowage in the Lunar Module. Each steel-mesh wheel was driven by a small electric motor, which gave the rover a maximum speed of 12 km (8 miles) per hour on clear ground. Its large dish antenna transmitted a TV signal from a front-mounted colour camera directly to Earth.

Angkor Wat (Cambodia) is not only the largest Hindu Temple, but also one of the wonders of the word. Yet, unknown to many Hindus all around! An architectural marvel and a piece of world heritage. Indians know more about Taj Mahal and almost nothing about this temple at Angkor Wat. Religion apart, this beautiful temple and it's intricate architectural wonder that signifies a symbol of Science and Mathematics in ancient times. There might not have been any Civil Engineering at that time, but even today the Engineers of Modern days, will have to bet their heads to recreate something like this. Likewise, there are many wonders which people do not know about. We are lost in Eiffel Tower and things like Egyptian Pyramids, but there are lot more of Indian marvels and structures, in other places - why, even in China, Japan & Singapore also! Angkor Wat (or Angkor Vat) is a temple at Angkor, Cambodia, built for king Suryavarman II in the early 12Th century as his state temple and capital

Kangaroos are the best-known marsupials, or animals that carry their young in a special pouch on their belly.

Ellora Cave 16Th This Picture is from Ellora Cave No.16 which show a marriage ceremony of Shiva and Parvati in the first picture of the back wall in which Shiv and Parvati have their hand in hand in which marriage ritchgval is perform by Brahma .Parvati has leg ring in only one leg.The face of both looks Innocent and exited.

Abbe, Ernst born Jan. 23, 1840, Eisenach, Grand Duchy of Saxe-Weimar-Eisenach died Jan. 14, 1905, Jena, Ger. physicist whose theoretical and technical innovations in optical theory led to great improvements in microscope design (such as the use of a condenser to provide strong, even illumination, introduced in 1870) and clearer understanding of magnification limits. He discovered the optical formula now called the Abbe sine condition, one of the requirements that a lens must satisfy if it is to form a sharp image, free from the blurring or distortion caused by coma and spherical aberration. In 1863 he joined the University of Jena, rising to professor of physics and mathematics (1870) and director of the astronomical and meteorological observatories (1878). In 1866 he became research director of the Zeiss optical works. Two years later Abbe invented the apochromatic lens system for microscopes, which eliminates both the primary and secondary colour distortion of light. In 1891 Abbe set