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A photon is an elementary particle, the quantum of light and all other forms of electromagnetic radiation. It is the force carrier for the electromagnetic ... more
Planck’s law describes the electromagnetic radiation emitted from a black body at a certain temperature. Radiance and spectral radiance are measures ... more
Planck’s law describes the electromagnetic radiation emitted from a black body at a certain temperature. Radiance and spectral radiance are measures ... more
Electrons can only gain and lose energy by jumping from one allowed orbit to another, absorbing or emitting electromagnetic radiation with a frequency ... more
Radiation pressure is the pressure exerted upon any surface exposed to electromagnetic radiation. Radiation pressure implies an interaction between ... more
The relative velocity (v_A|B) is the velocity of an object or observer B in the rest frame of another object or observer A.
The general formula ... more
The relative velocity (v_A|B) is the velocity of an object or observer B in the rest frame of another object or observer A.
In the case where two ... more
The relative velocity (v_A|B) is the velocity of an object or observer B in the rest frame of another object or observer A.
In the case where two ... more
In physics, mass–energy equivalence is the concept that the mass of an object or system is a measure of its energy content. A physical system has a ... more
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