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conjunction, in astronomy

(Encyclopedia) conjunction, in astronomy, alignment of two celestial bodies as seen from the earth. Conjunction of the moon and the planets is often determined by reference to the sun. When a body is…

multiplexing

(Encyclopedia) multiplexing, in communication, technique whereby two or more independent messages, or information-bearing signals, are carried by a single common medium, or channel. When multiplexing…

LeHand, Missy

(Encyclopedia) LeHand, Missy (Marguerite Alice LeHand), 1896–1944, personal secretary to Franklin Roosevelt, b. Potsdam, N.Y. She worked for Roosevelt's unsuccessful vice presidential campaign (1920…

hysteresis

(Encyclopedia) hysteresishysteresishĭsˌtərēˈsĭs [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…

Levi

(Encyclopedia) LeviLevilēˈvī [key], in the Bible. 1 Son of Jacob and Leah and eponymous ancestor of the Levites. His name appears infrequently—at his birth, when he and Simeon massacred the…

Meleager

(Encyclopedia) MeleagerMeleagermĕlēāˈjər [key], hero in Greek mythology. He was the son of Oeneus, king of Calydon, and Althaea. When Meleager was born, a prophecy said that he would die when a…