Quantitatively, the relationship between temperature and peak wavelength of thermal radiation – for a hot plate, a star, or anything else in the universe – is:
lpeakT = 2.897 x 10 -3 m K,
where lpeak is measured in meters and T is measured in degrees Kelvin
(273.15 K = 0 C = 32 F).
Click here for an example of how to calculate peak wavelength.
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