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libido

(Encyclopedia)libido lĭbēˈdō, –bīˈ– [key] [Lat.,=lust], psychoanalytic term used by Sigmund Freud to identify instinctive energy with the sex instinct. For Freud, libido is the generalized sexual energy o...

quasar

(Encyclopedia)quasar kwāˈsär [key], one of a class of blue celestial objects having the appearance of stars when viewed through a telescope and currently believed to be the most distant and most luminous objects...

gamma-ray astronomy

(Encyclopedia)gamma-ray astronomy, study of astronomical objects by analysis of the most energetic electromagnetic radiation they emit. Gamma rays are shorter in wavelength and hence more energetic than X rays (see...

electroweak theory

(Encyclopedia)electroweak theory, a unified field theory that describes two of the fundamental forces in nature, electromagnetism (see electromagnetic radiation) and the weak interaction. The electroweak theory der...

Bohun, Humphrey VII de, 3d earl of Hereford and 2d earl of Essex

(Encyclopedia)Bohun, Humphrey VII de, 3d earl of Hereford and 2d earl of Essex, d. 1298, English nobleman. He was constable of England and with Roger Bigod, earl of Norfolk, led the baronial opposition to Edward I ...

Rogers, Richard George, Baron Rogers of Riverside

(Encyclopedia)Rogers, Richard George, Baron Rogers of Riverside, 1933–2021, British architect, b. Florence, Italy, Architectural Association, London (A.A. Dipl....

Raman effect

(Encyclopedia)Raman effect räˈmən [key], appearance of additional lines in the spectrum of monochromatic light that has been scattered by a transparent material medium. The effect was discovered by C. V. Raman i...

Charles I, emperor of the West and Frankish king

(Encyclopedia)Charles I, emperor of the West and Frankish king: see Charlemagne. ...

transducer

(Encyclopedia)transducer, device that accepts an input of energy in one form and produces an output of energy in some other form, with a known, fixed relationship between the input and output. One widely used class...

Kusch, Polykarp

(Encyclopedia)Kusch, Polykarp, 1911–93, American physicist, b. Blankenburg, Germany, Ph.D. Univ. of Illinois, 1936. Kusch was a researcher, professor, and administrator at Columbia from 1937 to 1972 and a profess...