Final answer:
The claim that the human body typically emits infrared radiation at a wavelength of 24 mm is false. The peak wavelength of infrared radiation emitted by the human body is around 10 micrometers, which is consistent with Wien's law for the typical human body temperature of around 300 K.
Step-by-step explanation:
The statement that a typical wavelength of infrared radiation emitted by the human body is 24 mm (2.4×10⁻² m) is false. Human bodies, which are typically near 300 K (Kelvin), emit infrared radiation with a peak wavelength around 10 micrometers (µm), according to Wien's law. This is much smaller than 24 mm. Infrared wavelengths are commonly in the range from 1 micrometer (µm) to 100 micrometers (µm). The enveloping temperature of an object influences the emitted radiation's peak wavelength; for example, the Sun, at a temperature of about 5000 K to 6000 K, has a peak wavelength of 560 nm, which is visibly seen as light.
Furthermore, this principle is observed in incandescent light bulbs, where a metal filament glows red at lower temperatures and progresses through the color spectrum with increasing temperature. Therefore, the infrared radiation emitted by our bodies peaks at a much shorter wavelength than the 24 mm suggested, which is significantly outside the typical infrared range.