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hysteresis

(Encyclopedia)hysteresis hĭsˌtərēˈsĭs [key], phenomenon in which the response of a physical system to an external influence depends not only on the present magnitude of that influence but also on the previous...

Lorentz contraction

(Encyclopedia)Lorentz contraction lôrˈĕnts [key], in physics, contraction or foreshortening of a moving body in the direction of its motion, proposed by H. A. Lorentz on theoretical grounds and based on an earli...

acceleration

(Encyclopedia)acceleration, change in the velocity of a body with respect to time. Since velocity is a vector quantity, involving both magnitude and direction, acceleration is also a vector. In order to produce an ...

le Carré, John

(Encyclopedia)le Carré, John lə kärāˈ [key], pseud. of David John Moore Cornwell, 1931–2020, English novelist. He was a tutor at Eton College (1956–58), and subsequently worked for the British foreign serv...

Planck, Max

(Encyclopedia)Planck, Max mäks plängk [key], 1858–1947, German physicist. Seeking to explain the experimental spectrum (distribution of electromagnetic energy according to wavelength) of blackbody radiation, he...

Sunni

(Encyclopedia)Sunni so͞oˈnī [key] [Arab. Sunna,=tradition], from ahl al-sunnah wa-l-jamaa [Arab.,=the people of the custom of the Prophet and community], the largest division of Islam. Sunni Islam is the heir to...

Thomas, Norman Mattoon

(Encyclopedia)Thomas, Norman Mattoon, 1884–1968, American socialist leader, b. Marion, Ohio; grad. Princeton (1905), Union Theological Seminary (1911). He served as pastor of several Presbyterian churches and did...

columnist

(Encyclopedia)columnist, the writer of an essay appearing regularly in a newspaper or periodical, usually under a constant heading. Although originally humorous, the column in many cases has supplanted the editoria...

Jacobite Church

(Encyclopedia)Jacobite Church jăkˈəbītˌ [key], officially Syrian Orthodox Church, Christian church of Syria, Iraq, and India, recognizing the Syrian Orthodox patriarch of Antioch as its spiritual head, regarde...

Moses

(Encyclopedia)Moses mōˈzĭs [key], Hebrew lawgiver, probably b. Egypt. The prototype of the prophets, he led his people in the 13th cent. b.c. out of bondage in Egypt to the edge of Canaan. The narrative in the B...