Question

At what wavelength human body radiates the most temperature

Answer 1

$wavelength = 0.289 \div temperature \\ in \: kelvin$

so human body temperature=98.5 F=310.1K

Answer 2

All objects with a temperature above absolute zero (0 K, -273.15 oC) emit energy in the form of electromagnetic radiation. A blackbody is a theoretical or model body which absorbs all radiation falling on it, reflecting or transmitting none.