using de broglie's formula, electron with a drift velocity of few mm/s has de broglie wavelength at radio or microwave frequency range. Does this have any significant implication. i.e. quantum-mechanical phenomena observation in everyday objects?
Dear @sumit, your question is very interesting, be cause in this frequency range, you will find that the law of Louise de Broglie, don't work, or better that the velocity of the particle don't agree with this law. This is due to the reference frame, which is the Cosmic Microwave Background Radiation and not the laboratory reference frame. In fact, if we where able to make a series of measure, in this energy range, we will disprove the special relativity theory. Unfortunately, it is very difficult to do.
Of course it can be and this was the way its relevance was measured experimentally. There's nothing strange about it and it doesn't have anything to do with the cosmic microwave background that's irrelevant when measuring the diffraction of electrons of solids.
Dear @Stam, diffraction measurements on any target must have a wavelength corresponding to the distance between atoms ( around 1 angstrom), for electrons, that gives a velocity of around 10^6, while the CMBR is around 3 10^5. There is therefore a question of precision, so if you are aware of some publication of precise measurement I would be very interested.
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