The original title is a light quantum
(lightquantum), the quantum of electromagnetic radiation, transmission
electromagnetic interaction norms particles, denoted by γ.
Light quantum theory of its static zero, non-charged, its energy is
Planck constant and the product of frequency of electromagnetic
radiation, ε = hv, in a vacuum to the speed of light c is running, its
spin is 1, is a boson. As early as 1900, M. Planck to explain blackbody
radiation energy distribution make the quantum hypothesis, material
between the oscillator and the radiation energy exchange is discrete, a
one, and each of energy hv; 1905 Nian A. Einstein further proposed light
wave itself is not continuous but has a particle nature, Einstein
called the light quantum; AH Compton in 1923 succeeded in explaining the
concept of light quantum X-ray scattering by the material when the
wavelength changes CommScope Cotton effect, and thus the concept of
light quantum has been widely accepted and applied in 1926 officially
named photons. Quantum electrodynamics in place, confirmed that the
electromagnetic interaction of photons is a medium of passing particles.
Charged particle emission or absorption of photons by the interaction
between the positive and negative charged particles that can be
converted into photon annihilation, they can also be generated in the
electromagnetic field.
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