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…
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…
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) NederlandNederlandnēˈdərlənd [key], city (1990 pop. 16,192), Jefferson co., SE Tex.; founded by Dutch settlers as a rice-farming community in 1897, inc. 1940. Primarily a residential…
(Encyclopedia) Woodland, city (1990 pop. 39,802), seat of Yolo co., N central Calif., in a fertile farm area yielding tomatoes, wheat, rice, beans, vegetables, walnuts, almonds, melons, safflower,…
(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…
(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…
by David Johnson Since Indonesians speak more than 500 languages and dialects, and live on more than 17,000 islands, it is not surprising that Indonesian cuisine is quite varied. While…
