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sunset laws

(Encyclopedia)sunset laws, statutes that deal with the tendency of government agencies and programs to be self-perpetuating by providing for their periodic review. ...

sunshine laws

(Encyclopedia)sunshine laws: see Freedom of Information Act. ...

agrarian laws

(Encyclopedia)agrarian laws, in ancient Rome, the laws regulating the disposition of public lands (ager publicus). It was the practice of Rome to confiscate part of the land of conquered cities and states, and this...

blue laws

(Encyclopedia)blue laws, legislation regulating public and private conduct, especially laws relating to Sabbath observance. The term was originally applied to the 17th-century laws of the theocratic New Haven colon...

stroboscope

(Encyclopedia)stroboscope strŏbˈəskōp [key], optical instrument for making a moving object appear to be slowed down or stationary. This effect is created by interrupting the observer's view so that the object i...

speed

(Encyclopedia)speed, change in distance with respect to time. Speed is a scalar rather than a vector quantity; i.e., the speed of a body tells one how fast the body is moving but not the direction of the motion. If...

aberration of starlight

(Encyclopedia)aberration of starlight, displacement of the apparent path of light from a star, resulting in a displacement of the apparent position of the star from its true position; discovered by the English astr...

Brahe, Tycho

(Encyclopedia)Brahe, Tycho tīˈkō brä [key], 1546–1601, Danish astronomer. The most prominent astronomer of the late 16th cent., he paved the way for future discoveries by improving instruments and by his prec...

Baruch, book of the Septuagint and of the Apocrypha

(Encyclopedia)Baruch, early Jewish book included in the Septuagint, but not included in the Hebrew Bible and placed in the Apocrypha in the Authorized Version. It is named for a Jewish prince Baruch (fl. 600 b.c.),...

work

(Encyclopedia)work, in physics and mechanics, transfer of energy by a force acting to displace a body. Work is equal to the product of the force and the distance through which it produces movement. Although both fo...