infrared

Why did humans not evolve the capacity to see infrared light? Are there animals that can? It seems like it would be a great evolutionary advantage to see a predator's body heat in the dead of night. Could it just be a mutation that never occurred? Is there some sort of physical limitation on the...

Help me out here. I'm currently engaged in a debate on another forum about 'infra-red saunas' (basically dry-heat saunas) which one poster is claiming help you burn fat and lose weight permanently by burning calories (up to 600 an hour!), rather than temporarily from losing water by the...

I ran onto this while searching for information on Nikken products. It seems to me to be a renaming of an ordinary process in order to sell something. Am I in error? http://www.earthtym.net/ref-far-infared.htm This is just one site of many that will come up with a search for Far Infrared...