An electron and a positron annihilate at rest and produce a
An electron and a positron annihilate at rest and produce a pair of photons. The rest mass energy of the positron and electron are each 511 kev. What is the wavelength of the photons?
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a laser beam is projected through a diffraction grating which has a slit to slit separation of 2 microm 5000 linescm
an electron and a positron annihilate at rest and produce a pair of photons the rest mass energy of the positron and
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