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Results tagged with photons
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user 63882
The photon is the quantum of the electromagnetic four-potential, and therefore the massless bosonic particle associated with the electromagnetic force, commonly also called the "particle of light". Use this tag for questions about the quantum-mechanical understanding of light and/or electromagnetic interactions.
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Why the photon can't produce electron and positron in space or in vacuum?
$$\frac{hc}{\lambda} = K_e + K_p + 2m_e c^2$$
could be the energy conservation equation for a photon of wavelength $\lambda$ decaying into a electron and positron with kinetic energies $K_e$ and $K_p$ …
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