Infrared interferometer spectrometer and radiometer
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An Infrared interferometer spectrometer and radiometer is a device built into the Voyager space probe which enables the measurement of three distinct properties. The Infrared interferometer spectrometer holds two functions as it can act as a thermometer and/or spectrometer. The thermometer allows for the observance and measurement of heat energy emitting from an object, and the spectrometer enables the identification of various elements, molecules, and compounds which may be present in an atmosphere and/or on the surface of a body. The separate radiometer allows for the measurement of reflected infrared, visible, and ultraviolet light off of a body.
The device was included, primarily, to meet the following objectives.
- Determination of atmospheric vertical thermal structure (which in turn aids modeling of atmosphereic dynamics).
- Measurement of the abundances of hydrogen and helium (as a check on theories regarding their ratio in the primitive solar nebula).
- Determination of the balance of energy radiated to that absorbed from the sun (to help investigate planetary origin, evolution, and internal processes).
References
- "Infrared Interferometer Spectrometer and Radiometer". voyager.jpl.nasa.gov. N.A.S.A. Retrieved 2014-04-20.
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