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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...

toothfish

(Encyclopedia)toothfish, common name for a genus (Dissostichus) of deep-water marine ray-finned fishes found in waters off S South America to Antarctica. The Patagonian toothfish, D. eleginoides, is the northerly o...

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...

Dundee, Angelo

(Encyclopedia)Dundee, Angelo, 1921–2012, American boxing trainer, most famous for his work with Muhammad Ali, b. Philadelphia as Angelo Mirena, Jr. After serving in World War II he moved to New York City, where h...

biophysics

(Encyclopedia)biophysics, application of various methods and principles of physical science to the study of biological problems. In physiological biophysics physical mechanisms have been used to explain such biolog...

Blades, Rubén

(Encyclopedia)Blades, Rubén ro͞obānˈ bläˈᵺās [key], 1948–, Panamanian singer, songwriter, band leader, and actor. He is a graduate (1972) of the Univ. of Panama law school and holds a masters degree (198...

atomic number

(Encyclopedia)atomic number, often represented by the symbol Z, the number of protons in the nucleus of an atom, as well as the number of electrons in the neutral atom. Atoms with the same atomic number make up a c...

green flash

(Encyclopedia)green flash or emerald flash, a refractive phenomenon of the atmosphere where the top edge of the setting (or, less frequently, rising) sun will momentarily turn emerald green. The green color lasts f...