I know there is an equation somewhere that tells the wavelength of light given off by an object at a certain heat. So does this work backwards as well? do you get maximum heating of an object if you heat it with that wavelength light? if so, then you could vary the wavelength as the heat in the object increases to continue maximum heating? 1 more: is it just a coincidence that infrared electromagnetic waves are considered "heat" waves, the coicidence being that most objects at normal heat give off infrared wavelengths? do any objects give off things like radio waves when excited or cooled?