Why do all hot objects emit infrared light?

The same goes for objects that are perfectly transparent. But these are all idealized cases. Real objects are between these two extremes; but some emit, e.g., infrared radiation more efficiently than others. But okay, here is the underlying question: why do hot objects emit light (electromagnetic radiation) at all? read more

All hot objects emit radiation at every wavelength, including infrared radiation. This spectrum has a maximum intensity at a wavelength that depends upon the temperature of the body. The greater its temperature ( We say colloquially, “The hotter the body..”) the shorter this wavelength is. read more

Infrared radiation All objects emit (give out) and absorb (take in) thermal radiation, which is also called infrared radiation. The hotter an object is, the more infrared radiation it emits. read more