(Encyclopedia) Gasser, Herbert SpencerGasser, Herbert Spencergăsˈər [key], 1888–1963, American physiologist, b. Platteville, Wis., grad. Univ. of Wisconsin (B.A., 1910; M.A., 1911), M.D. Johns…
(Encyclopedia) pentimentopentimentopĕnˌtəmĕnˈtō [key], painter's term for the evidence in a work that the original composition has been changed. Often the opaque pigment with which the artist covered…
(Encyclopedia) Lipscomb, William Nunn, Jr.Lipscomb, William Nunn, Jr.lĭpˈskəm [key], 1919–2011, American physical chemist, b. Cleveland, Ph.D. California Institute of Technology, 1946. A professor of…
X-RAY OF BINOCULARSREFRACTING TELESCOPEREFLECTING TELESCOPEFIND OUT MOREJust as our eyes cannot see small objects, so they cannot see things that are very far off. Even when things are millions of…
musical group Amy Ray and Emily Saliers began singing together during high school and have remained partners ever since, adopting the moniker Indigo Girls in 1985. That partnership has proven…
(Encyclopedia) pulsar, in astronomy, a neutron star that emits brief, sharp pulses of energy instead of the steady radiation associated with other natural sources. The study of pulsars began when…
(Encyclopedia) electric fish, name for various fish that produce electricity by means of organs usually developed from modified muscle tissue. The electric eels of South America are freshwater…
(Encyclopedia) gamma radiation, high-energy photons emitted as one of the three types of radiation resulting from natural radioactivity. It is the most energetic form of electromagnetic radiation,…
(Encyclopedia)
CE5
Sextant
sextant, instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical…
