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A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z   entire Web this site joule A metric unit of energy or work; the energy produced by a force of one newton operating through a distance of one meter. One joule per second equals one watt or 0.737 ft-lb/s; 1 Btu equals 1,055 joules. Related category    • UNITS Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP