can detect thermal radiation from objects that differ in temperature from their environment as…

A python can detect thermal radiation from objects that differ in temperature from their environment as long as the received intensity of thermal radiation is greater than 0.60 W/m2. Your body emits a good deal of thermal radiation; a typical human body has a surface area of 1.8 m2, a surface temperature of 30∘C, and an emissivity e = 0.97 at infrared wavelengths. As we’ve seen, the intensity of a source of radiation decreases with the distance from the source.If you are outside on a cool, dark night, what is the maximum distance from which a python could detect your presence? spnova-new-dynamic-txt

 

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