Arc spectrum
a spectrum formed from the light produced by an electric arc, characteristic of the gas or vapor through which the arc p-sses.
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- Arc tan
. arc tangent
- Arc tangent
the angle, measured in radians, that has a tangent equal to a given number. symbol: tan −1. abbreviation: arc tan; arc tangent the inverse of the tangent function.
- Arc welding
welding by means of the heat of an electric arc. historical examples one difficulty with arc welding is the lack of skillful operators. oxy-acetylene welding and cutting harold p. manly the same advice applies to arc welding as to the gas flame method but in a lesser degree. oxy-acetylene welding and cutting harold p. manly […]
- Arca
a chest for valuables, used in medieval spain and italy. historical examples from the deep water i fished up some coral, and attached to one fragment was a new species of arca. narrative of the surveying voyages of his majesty’s ships adventure and beagle, between the years 1826 and 1836 robert fitzroy those of arca […]
- Arcade
architecture. a series of arches supported on piers or columns. an arched, roofed-in gallery. compare . an arched or covered p-ssageway, usually with shops on each side. an establishment, public area, etc., containing games of a mechanical and electronic type, as pinball and video games, that can be played by a customer for a fee. […]