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Compare the typical size of smoke particles to that of the wavelengths of visible light. How...

Compare the typical size of smoke particles to that of the wavelengths of visible light. How does this size comparison affect human visibility in smoke? Would the ability to see in IR help alleviate or exacerbate the problem of limited visibility in a smoke filled room?

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Any typical wood smoke particle size ranges less than 1 micrometer. Roughly less than 10000 angstroms. For a relative comparison, visible light sizes are from 4500 to 6350 angstroms.

This size comparison causes more scattering of visible light amongst dust particles.Therefore the visibility will be reduced. However you may be able to see red because it will travel the farthest without scattering

In a smoke filled room there will be warmth everywhere. An IR vision would help you in seeing anything apart which emits heat. In a smoked room , all you will be able to see would be clustered red patches..This is because hotter bodies emit more IR rays than cooler counterparts. So this vision will only cause you problems in seeing.

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