Hello, I know it's an old subject but I was interested in the power of a microwave, I was considering a boiler but apparently it would not be too profitable. (Still that would be super fast). I am quite surprised at the performance of the kettle because we must not forget that it also heats the resistance especially in the case. Anyway, I do not intervene for that.
Pkoi from 2 very precise frequencies (visible light) EM waves have corpuscular and undulatory behavior ... whereas they only have wave behavior otherwise ...
And as by chance these 2 limits correspond to the precise spectrum of the human eye ...
It is this kind of observation that makes me ... believe that we are not "for nothing" in the Universe ...
I do not know where you got this information but it's just wrong. The twofold wave duality has nothing to do with the value of the frequency (or the wavelength). Moreover, each photon can be transformed into another associated with a different frequency wave thanks to the doppler effect.
Infrared photons (and theoretically megaherms) exist just as much as the visible ones. Some apparent quantization effects of the EM field, such as the quantification of the energy levels of the atoms giving rise to a quantification of the emitted or absorbed spectrum, are in fact well explained by a semi-classical model in which the electromagnetic wave remains a wave and only the electrons obey the rules of quantum mechanics.
Quantification of the EM field is more of a conceptual / computational necessity and experiments that actually put photons forward are quite rare. In addition to that we must know what is meant by corpuscular behavior, if you imagine small balls that move in a straight line then no, it's never like that, and the light seems to move in a straight line for a very different reason, the wavelength is so small compared to the section of a beam of light that there is practically no more diffraction over the distances that interest us humanly. The evolution equations of the EM field remain the same. You will not find a photon wave function in a good physics book, or it is an excellent book (or a very bad one) it is a concept to take with great care.
As for the losses on the walls I rather think that this is a good explanation, certe waves are reflected but we must ask why they are reflected. The reflection of an EM wave is never anything other than the manifestation of the alternating currents of the walls which become secondary sources of electromagnetic waves. I do not know of any metal that does not suffer from Joule effect at temperature. room.
Chuss.