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Machines that generated static electricity with a glass disc were popular and widespread in Europe by 1740. [3] In 1745, German cleric Ewald Georg von Kleist and Dutch scientist Pieter van Musschenbroek discovered independently that the electric charge from these machines could be stored in a Leyden jar , named after the city of Leiden in the ...
View history; Tools. Tools. ... This is a list of the world's largest machines, both static and movable in history. ... List of largest machines.
Electrostatic machines are typically used in science classrooms to safely demonstrate electrical forces and high voltage phenomena. The elevated potential differences achieved have been also used for a variety of practical applications, such as operating X-ray tubes, particle accelerators, spectroscopy, medical applications, sterilization of food, and nuclear physics experiments.
The largest air-insulated Van de Graaff generator in the world, built by Dr. Van de Graaff in the 1930s, is now displayed permanently at Boston's Museum of Science. With two conjoined 4.5 m (15 ft) aluminium spheres standing on columns 22 ft (6.7 m) tall, this generator can often obtain 2 MV (2 million volts ).
Corbett was a medical physician for the Shakers, a religious group of colonial America. He was a botanist and preferred herbal medicines to bloodletting. [2] His machine was hand-operated. Rotating a glass cylinder in contact with a silk pad caused a static charge to accumulate on the cylinder.
In 2004, researchers at University of California, Berkeley, developed rotational bearings based upon multiwall carbon nanotubes.By attaching a gold plate (with dimensions of the order of 100 nm) to the outer shell of a suspended multiwall carbon nanotube (like nested carbon cylinders), they are able to electrostatically rotate the outer shell relative to the inner core.
Researchers believe they’ve discovered the world’s largest asteroid impact crater in New South Wales, Australia. They think the impact may have happened between 445 and 443 million years ago.
Museum of History and Technology. Smithsonian Institution (1964–1998) [93] [94] [95] 52 ft (16 m) 108 kg: 8.0 s National Museum of American History, Smithsonian Institution (removed permanently 2008) 68.9 ft (21 m) 105 kg: 9.2 s Wisconsin: Stevens Point: University of Wisconsin–Stevens Point: Wyoming: Rock Springs: Western Wyoming Community ...