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G O D S A N D B O O K O F D E A D A N C I E N T E G Y P T
A N D B O O K O F L I V I N G M O D E R N T O R U S
W A V E
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space, carrying electromagnetic radiant energy.
A linearly polarized sinusoidal electromagnetic wave, propagating in the direction +z through a homogeneous, isotropic, dissipationless medium, such as vacuum.
The electric field (blue arrows) oscillates in the ±x-direction, and the orthogonal magnetic field (red arrows) oscillates in phase with the electric field, but in the ±y-direction.
James Clerk Maxwell derived a wave form of the electric and magnetic equations, thus uncovering the wave-like nature of electric and magnetic fields and their symmetry.
Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave.
Maxwell's equations were confirmed by Heinrich Hertz through experiments with radio waves.
Representation of the electric field vector of a wave of circularly polarized electromagnetic radiation.
The Planck's constant, is the quantum of electromagnetic action that relates a photon's energy to its frequency.
The Planck constant multiplied by a photon's frequency is equal to a photon's energy.
The Planck constant is a fundamental physical constant denoted as h, and of fundamental importance in quantum mechanics.
The Planck constant is defined to have the exact value h = 6.62607015*10-34
photon energy :
E = h * v = h * c / λ
where, v - photon frequency, c - speed of light, λ - photon wavelength