. "http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=31891"^^ . . . . . . . . . . . "active-energy" . . . . . . . "http://www.iso.org/iso/catalogue_detail?csnumber=43012"^^ . . . . . . . . . . . . . . . . . . . "W" . . "\"Active Energy\" is the electrical energy transformable into some other form of energy." . . . . . "\\(W = \\int_{t_1}^{t_2} p dt\\), where \\(p\\) is instantaneous power and the integral interval is the time interval from \\(t_1\\) to \\(t_2\\)."^^ . . . . "http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=601-01-19"^^ . "Active Energy"@en . . . . . . . .