(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…
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) Giacconi, Riccardo, 1931–2018, Italian-American astrophysicist, b. Milan, Italy, Ph.D. Univ. of Milan 1954. He was a researcher at American Science and Engineering Corporation (1959–73…
(Encyclopedia) Karle, JeromeKarle, Jeromekärl [key], 1918–2013, American physicist, b. New York City, Ph.D. Univ. of Michigan, 1943. He worked on the Manhattan Project before beginning a career (1946…
(Encyclopedia) Abbott, BereniceAbbott, Berenicebĕrˌənēsˈ [key], 1898–1991, American photographer, b. Springfield, Ohio. Abbott, who had left (1918) the Midwest for Greenwich Village, then (1921)…
(Encyclopedia) Perutz, Max Ferdinand, 1914–2002, British molecular biologist, b. Vienna. One of the pioneers in the field of molecular biology, Perutz studied chemistry at the Univ. of Vienna (1932–…
Born: 1889Birthplace: Murom, Russia Cathode ray tube—Zworykin invented the iconoscope, a television transmitting tube and the kinescope, a cathode ray tube that projects pictures it receives onto a…
Born: 1926Birthplace: New York City Diagnostic x-ray systems—Ledley developed the ACTA diagnostic x-ray scanner, the first whole-body computerized tomography (CT) machine. He was the first to do…
PARTS OF THE EYE IMAGE FORMATION FROM EYES TO BRAIN CHANGING PUPIL SIZE COLOUR VISION FIND OUT MORE
Whenever we are awake, our eyes work constantly to collect information about the world.…
