Englishfor English speakers
photoelectric
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adjective
of or pertaining to photoelectricity
the photoelectric effect
compensator
noun
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(literally) A party or thing which compensates, pays or otherwise provides a compensation
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Any device used to compensate for something, notably to achieve a better balance
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A building control device used to deliver the compensation relationship or curve between the air temperature outside a building and the temperature of water or air provided to spaces or zones within the building for purposes of heating or cooling.
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(nautical) One of several small magnets placed in the binnacle to neutralize the effect of the ship's metal on the compass