Calorimetry Small 231×320 Medium 462×640 Large 739×1024 Download Tiff Original 1732×2400 | (609.0 KB) Description An illustration of Rowland's calorimeter apparatus. Calorimetry is the science of measuring the heat of chemical reactions or physical changes. Calorimetry involves the use of a calorimeter. Keywords calorimeter, calorimetry Galleries Chemistry Apparatus Source: Encyclopaedia Britannica (11th ed., vol. 5) (New York, NY: The Encyclopaedia Britannica Company, 1910)