(Encyclopedia) Witte, Count Sergei YulyevichWitte, Count Sergei Yulyevichsyĭrgāˈ y&oomacr;ˈlyĭvĭch vĭtˈə [key], 1849–1915, Russian premier. A railway administrator, he became minister of…
CONTACT LENSCONCAVE AND CONVEX LENSESFRESNEL LENSSLIDE PROJECTORMAGNIFYING GLASSFIND OUT MOREA lens is a piece of transparent plastic or glass that can make things seem to change size. It works…
The Experiment That FailedTheories of the UniverseThe Dual Nature of LightYou Can't See It, but It Has to Be ThereThe Experiment That FailedA Little Bit of Quanta Goes a Long Way Now that the…
(Encyclopedia) Brown, Moses, 1738–1836, American manufacturer and philanthropist, b. Providence, R.I. He was associated with his brothers John, Joseph, and Nicholas in the family's mercantile…
EUROPEAN SOUTHERN OBSERVATORYMAUNA KEA OBSERVATORYVERY LARGE ARRAYFIND OUT MOREOptical observatories study the visible radiation (light) from objects in space, and most are located high up on…
Royal Biographies:Duke and Duchess of Kent by David Johnson RELATED LINKS Royal Family TreeQueen Elizabeth IIPrince Philip BORN ON OCTOBER 9, 1935, the Duke of Kent…
(Encyclopedia) Coolidge, William David, 1873–1975, American physical chemist, b. Hudson, Mass., grad. Massachusetts Institute of Technology, 1896. He joined the General Electric Company in 1905 and…
OCEAN WAVESBIOGRAPHY: HEINRICH HERTZ German, 1857-1894ELECTROMAGNETIC SPECTRUMSEISMIC WAVESFIND OUT MOREMany different kinds of energy travel in waves. Sound waves carry noises through the air to…
(Encyclopedia) cosmic rays, charged particles moving at nearly the speed of light reaching the earth from outer space. Primary cosmic rays consist mostly of protons (nuclei of hydrogen atoms), some…
