A bolometer is a device for measuring radiant heat by means of a material having a temperature-dependent electrical resistance. It was invented in 1878 by the American astronomer Samuel Pierpont Langley.
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Bolometer in the context of Thermal Emission Spectrometer
The Thermal Emission Spectrometer (TES) was an instrument on board Mars Global Surveyor. TES collected two types of data, hyperspectral thermal infrared data from 6 to 50 micrometres (μm) and bolometric visible-near infrared (0.3 to 2.9 μm) measurements. TES had six detectors arranged in a 2x3 array, and each detector had a field of view of approximately 3 × 6 km on the surface of Mars.
The TES instrument used the natural harmonic vibrations of the chemical bonds in materials to determine the composition of gases, liquids, and solids.
View the full Wikipedia page for Thermal Emission SpectrometerBolometer in the context of Infrared detector
An infrared detector is a detector that reacts to infrared (IR) radiation. The two main types of detectors are thermal and photonic (photodetectors).
The thermal effects of the incident IR radiation can be followed through many temperature dependent phenomena.Bolometers and microbolometers are based on changes in resistance. Thermocouples and thermopiles use the thermoelectric effect. Golay cells follow thermal expansion. In IR spectrometers the pyroelectric detectors are the most widespread.
View the full Wikipedia page for Infrared detector