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equal-time rule

(Encyclopedia)equal-time rule, a Federal Communications Commission rule that requires equal air time for all major candidates competing for political office. It was preceded by the fairness doctrine, abolished in 1...

equation of time

(Encyclopedia)equation of time: see solar time. ...

Greenwich mean time

(Encyclopedia)Greenwich mean time or Greenwich meridian time (GMT), the former name for mean solar time at the site of the Royal Observatory in Greenwich, England, which is located on the prime meridian. In 1925 th...

apparent solar time

(Encyclopedia)apparent solar time: see solar time. ...

mean solar time

(Encyclopedia)mean solar time: see solar time. ...

local solar time

(Encyclopedia)local solar time: see solar time. ...

time , in music

(Encyclopedia)time, in music: see tempo; meter; rhythm; syncopation; metronome and musical notation. ...

rhythm, biological

(Encyclopedia)rhythm, biological, or biorhythm, cyclic pattern of physiological changes or changes in activity in living organisms, most often synchronized with daily, monthly, or annual cyclical changes in the env...

Harrison, Jim

(Encyclopedia)Harrison, Jim (James Thomas Harrison), 1937–2016, American novelist, poet, and essayist, b. Grayling, Mich., grad. Michigan State Univ. (B.A., 1960; M.A., 1965). He began his writing career as a poe...

period, in geologic time

(Encyclopedia)period, unit of time on the geologic timescale. Periods are shorter than an era and longer than an epoch. Periods are of variable length, generally lasting tens of millions of years, with characterist...