A photon is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force.- Photon
However it does not include massless particles such as photons, or other energy phenomena or waves such as light or heat.- Matter
While trying to explain how matter and electromagnetic radiation could be in thermal equilibrium with one another, Planck proposed that the energy stored within a material object should be regarded as composed of an integer number of discrete, equal-sized parts.- Photon
Like all types of electromagnetic radiation, visible light propagates by massless elementary particles called photons that represents the quanta of electromagnetic field, and can be analyzed as both waves and particles.- Light
The effective velocity of light in various transparent substances containing ordinary matter, is less than in vacuum.- Light
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In physics, energy is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light.
In the case of an electromagnetic wave these energy states are called quanta of light or photons.
In this system the matter and antimatter (electrons and positrons) are destroyed and changed to non-matter (the photons).