What is light, particles, waves or both
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What is light? Is it a particle, wave, or both? Define the wave properties: period, wavelength, amplitude and frequency. What is c? How does c relate to wavelength and frequency?
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The expert determines what is light, particles, waves or both is determined.
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Classical, from classical electrodynamics of Maxwell, light is the propagation of disturbances in the continuum of electric field. Just as water waves are propagation of any disturbance in the "matter field" of the water or "water field".
Now from the viewpoint of quantum theory, light consists of some physical entities called photons which are referred to as particles but are not quite particles as we explain in the following. First of all photons are responsible for exchange of electric force: When two charges exert force on each other, they are actually sending and receiving photons to each other, thereby acting on the other body and exerting force on it.
But is light or photons particles or waves? Based on standard interpretation of quantum theory, we can not say anything about a system before ...
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