Understanding Infrared Thermography Reading 3

13.Blackbody, blackbody radiator - A perfect emitter; an object that absorbs all the
radiant energy impinging on it at all wavelengths and reflects and transmits none.
A surface with emissivity of unity (1.0) at all wavelengths.
14.Bolometer. infrared ~ A type of thermal infrared detector.
15.Calibration - Checking and/or adjusting an instrument such that its readings agree
with a standard .
16.Calibration check - A routine check of an instrument against a reference to ensure
that the instrument has not deviated from calibration since its last use.
17.Calibration accuracy - The accuracy to which a calibration is performed. usually
based on the accuracy and sensitivity of the instruments and references used in
the calibration.
18.Calibration source, infrared - A blackbody or other target of known temperature
and effective emissivity used as in calibration reference.
19.Capacitance, thermal - This term is used to describe heat capacity in terms of an
electrical analog, where toss of heat in analogous to loss of charge on a capacitor.
Structures with high thermal capacitance change temperature more slowly than
those with low thermal capacitance.
20.Capacity, heat - The heat capacity of a material or structure describes its ability to
store heat. It is the product of the specific heat (c p
) and the density (ρ) of the
material. This means that denser materials generally will have higher heat
capacities than porous materials.
Charlie Chong/ Fion Zhang