In the following video I show you how to calculate photon mass (at rest), whose value is 0, and the apparent mass of the photon, that is, the mass under relativistic effects, and, as you know, it increases with velocity if this is, if I remember correctly, more than 10% of "c" or the speed of light. If the velocity of a particle is less than 10% of "c", then relativistic effects are negligible and its mass is the rest mass.
They say that there is an indeterminate result when calculating the relativistic mass of the photon but this indeterminate result can be avoided if we calculate it from the energy of a photon whose energy is E=h.f, with "h" being Planck's constant and "f" the frequency of a photon. What Planck's constant means is that energy is quantized. That is, a photon is released in small chunks, or quanta. "f" is the frequency of the photon wave.
Under a gravitational field, light (visible and invisible to the human eye) varies its apparent or total mass because gravity affects its frequency because it cannot change the velocity of a photon, as it does with other bodies, because it always travels at 300,000 km/s.
In the video you can see the easy calculations, which only need fractions and square roots. I am not a physicist but I am an engineer, so it is possible that my conclusions are different from those drawn by them. In any case, my video can help you learn Spanish and become familiar with ideas about photons in a more or less playful way. Although the video is in Spanish, calculations can be understood in any language.
They say that there is an indeterminate result when calculating the relativistic mass of the photon but this indeterminate result can be avoided if we calculate it from the energy of a photon whose energy is E=h.f, with "h" being Planck's constant and "f" the frequency of a photon. What Planck's constant means is that energy is quantized. That is, a photon is released in small chunks, or quanta. "f" is the frequency of the photon wave.
Under a gravitational field, light (visible and invisible to the human eye) varies its apparent or total mass because gravity affects its frequency because it cannot change the velocity of a photon, as it does with other bodies, because it always travels at 300,000 km/s.
In the video you can see the easy calculations, which only need fractions and square roots. I am not a physicist but I am an engineer, so it is possible that my conclusions are different from those drawn by them. In any case, my video can help you learn Spanish and become familiar with ideas about photons in a more or less playful way. Although the video is in Spanish, calculations can be understood in any language.
For an earlier video on the same subject, see Photon mass.
For another calculation involving photons, see When a photon of 1 kg stops a meteorite of 3,000 tonnes.
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De genio a geni@, ¿Quรฉ me cuentas?
From genius to genius, what do you tell me?