Plural of erg; a unit of energy or work in physics equal to the amount of force needed to move one gram one centimeter.
From Greek 'ergon' meaning work; erg is a scientific unit created in the 19th century from this root to measure mechanical energy.
The erg is so tiny that a flying mosquito generates about 10 million ergs of energy per second—it's useful mostly for describing atomic-scale physics rather than everyday objects.
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