... of heat, which was generally in from four to six minutes. Afterwards the pan was covered with a disk of oiled paper, to prevent evaporation, which would have lessened the weight during the operation of weighing. • The heat of the room, during the... The steam engine theoretically and practically displayed, by G. Birkbeck and ... - Page 6 by George Birkbeck - 1827 Full view -
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