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electron tube
(Encyclopedia) CE5 Triode electron tube electron tube, device consisting of a sealed enclosure in which electrons flow between electrodes separated either by a vacuum (in a vacuum tube) or by an ionized gas at l...Thackeray, William Makepeace
(Encyclopedia)Thackeray, William Makepeace thăkˈərē [key], 1811–63, English novelist, b. Calcutta (now Kolkata), India. He is important not only as a great novelist but also as a brilliant satirist. In 1830, ...Podolia
(Encyclopedia)Podolia pōdōˈlyə [key], region, SW Ukraine, separated in the south from Moldova by the Dniester and in the west from W Galicia by the Southern Buh. It borders on Volhynia in the north. Kamyanets-P...sap
(Encyclopedia)sap, fluid in plants consisting of water and dissolved substances. Cell sap refers to this fluid present in the large vacuole, or cell cavity, that occupies most of the central portion of mature plant...digitalis
(Encyclopedia)digitalis dĭjˌĭtălˈĭs [key], any of several chemically similar drugs used primarily to increase the force and rate of heart contractions, especially in damaged heart muscle. The effects of the d...Bancroft, Anne
(Encyclopedia)Bancroft, Anne, 1931–2005, American actress, b. New York City as Anna Maria Italiano. Her New York stage debut in Two for the Seesaw (1958) was a major triumph. She was acclaimed for her performance...Richter, Burton
(Encyclopedia)Richter, Burton rĭkˈtər [key], 1931–2018, American physicist, b. New York City, Ph.D. Massachusetts Institute of Technology, 1956. A professor at Stanford, Richter designed and built a particle a...Orbiting Geophysical Observatory
(Encyclopedia)Orbiting Geophysical Observatory (OGO), series of six orbiting observatories (see observatory, orbiting) launched between 1964 and 1969 by the National Aeronautics and Space Administration (NASA) to s...Amherst, town, United States
(Encyclopedia)Amherst. 1 Town (2020 pop. 39,263), Hampshire co., central Mass., in a fertile farm area; inc. 1759. Named for Lord Jeffery Amherst, it is a college town. Emily Dickinson was born an...Browse by Subject
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