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cycle

(Encyclopedia)cycle, in astronomy, period of time required for the recurrence of some celestial event. The length of a cycle may be measured relative to the sun or to the fixed stars (see sidereal time). A frequent...

Acheulian

(Encyclopedia)Acheulian əsho͞oˈlēən [key]: see Paleolithic period. ...

May, Thomas Erskine, 1st Baron Farnborough

(Encyclopedia)May, Thomas Erskine, 1st Baron Farnborough, 1815–86, English constitutional jurist and historian. A period of long service to Parliament, including his tenure (1871–86) as clerk of the House of Co...

Beefeaters

(Encyclopedia)Beefeaters, popular name for the Yeomen of the Guard and for the warders of the Tower of London. Both wear colorful uniforms modeled after those of the Elizabethan period. ...

tuning fork

(Encyclopedia)tuning fork, steel instrument in the shape of a U with a short handle. When struck it produces an almost pure tone, retaining its pitch over a long period of time; thus it is a valuable aid in tuning ...

rejería

(Encyclopedia)rejería rāhārēˈä [key], the art of making iron screens and grilles, developed in Spain from the Romanesque period through the Renaissance. It employs chiseled and hammered metal as well as wroug...

Hogwood, Christopher Jarvis Haley

(Encyclopedia)Hogwood, Christopher Jarvis Haley, 1941–2014, British conductor, musicologist, and harpsichordist, b. Nottingham, grad. Cambridge (1964). He was an leader of the early-music movement, which sought t...

antique

(Encyclopedia)antique. The term has been used collectively to designate classical Greek and Roman works of art, particularly sculptures; as an adjective to indicate an object, a period, or a style of ancient or ear...

wheel

(Encyclopedia)wheel. Through the many millennia of the Paleolithic period and the Neolithic period no use of the wheel was known to humans. Its use was not known to the Native Americans until the Europeans introduc...

day

(Encyclopedia)day, period of time for the earth to rotate once on its axis. The ordinary day, or solar day, is measured relative to the sun, being the time between successive passages of the sun over a stationary o...