Re: The Audiophoolery Thread.
Depends what you call 'far' infrared. All room temperature objects (say 300K) radiate infrared, and if their spectrum is anything like a black-body then the wavelength of peak radiation is around 10 micrometres. As the temperature goes up, the wavelength comes down in inverse proportion. So the surface of the sun, at close to 6000K, has a spectral peak in the yellow-green, close to 0.5 micrometres. The spectrum is very broad of course, so even the sun emits plenty of infrared.
Cheers,
GJ
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