A calorimeter utilizing a differential emissivity thermopile to measure directly the radiant heat exchange of small animals is described. Other modes of heat exchange are effectively eliminated by containing the animal in an infrared transparent container. Noise on low level signals is minimal due to a special heat sink design. Construction details, optimization, calibration, and the validity of negative thermopile signals for radiant energy absorption are discussed.
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© 1969 The American Institute of Physics.
1969
The American Institute of Physics
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