BY THE ENGLISH CORRESPONDENT OF THE SCIENTIFIC AMERICAN. ated is the product of the total thermal capacity of A new apparatus for measuring the mechanical the calorimeter, and its contents by the observed rise equivalent of heat was recently described before the of temperature. The latter must be… … at rest. The Rexer machine-gun is really a shoulder-arm, PROF, CALLENDAR’S APPARATUS FOR MEASURING THE The stand of the apparatus may be screwed to the and resembles a large rifle of the ordinary type. Its MECHANICAL EQUIVALENT OF HEAT, table or to a wooden board with heavy weights upon weight is…
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