resistance-coil

The direct current furnished the building is caused to pass through a variable resistance for adjusting minor variations in voltage and then through the mil-ammeter into a manganin resistance-coil inside the chamber, having a resistance of 84.2 ohms.

Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man Francis Gano Benedict 1913

Under ideal conditions of manipulation, the withdrawal of heat from the calorimeter should be at just such a rate as to exactly compensate for the heat developed by the resistance-coil.

Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man Francis Gano Benedict 1913

During an electrical check experiment, when thermal equilibrium has been thoroughly established and the heat brought away by the water-current exactly counterbalances the heat generated in the resistance-coil inside the chamber, the temperature of the calorimeter is allowed to rise slowly by raising the temperature of the ingoing water and thus bringing away less heat.

Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man Francis Gano Benedict 1913

In making experiments of this nature it is our custom first to place the resistance-coil in the calorimeter and make the connections.

Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man Francis Gano Benedict 1913

a considerable increase in the amount of heat brought away by the water-current over that generated in the resistance-coil and the difference represents exactly the amount of heat given up by the calorimeter during the fall in temperature.

Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man Francis Gano Benedict 1913