- #1
bobie
Gold Member
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Hi,
I've read that the frequency of EMR is found by means of a spectroscope , which uses diffraction grating and that it is derived indirectly from its wavelength. Is that true?
Is there a way, an instrument that count directly the frequency of a photon or a y-ray? and up to what frquency? Is it possible to verify that the frquency of a γ-ray resulting from the annihilation of an electron is 1.2356 x 10^20 Hz (511.000 eV)?
Thanks for your help!
I've read that the frequency of EMR is found by means of a spectroscope , which uses diffraction grating and that it is derived indirectly from its wavelength. Is that true?
Is there a way, an instrument that count directly the frequency of a photon or a y-ray? and up to what frquency? Is it possible to verify that the frquency of a γ-ray resulting from the annihilation of an electron is 1.2356 x 10^20 Hz (511.000 eV)?
Thanks for your help!