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Research Article | Open Access
Volume 14 2022 | None
Wavelength relationship of the photon's energy density and mass density
Soni Mishra
Pages: 4231-4235
Abstract
The simplest relativistic generalisation of Maxwell's equations, the Proca equations, allow for the effects of a nonzero photon rest mass to be included into electromagnetic with relative ease. You may use them to think about the far-reaching effects of a huge photon, such how it would change the speed of light, how it might affect static electromagnetic fields, how it might affect longitudinal electromagnetic radiation, and how it might affect concerns of gravitational deflection. Over the course of many decades, researchers have paid close attention to all of these from a variety of perspectives. Our present understanding of the photon rest mass is evaluated in this study, with a focus on the many experimental techniques that have been used to place upper bounds on it. The review divides all of these experiments into two broad classes: terrestrial and extra-terrestrial. There has been no definitive proof of a finite mass for the photon; instead, the studies have provided ever-tighter upper constraints on its size, validating the corresponding parts of Maxwell's electromagnetism. No single experiment or set of experiments can prove that the photon mass is infinitely small, and even as the experimental limits approach the underlying bounds of uncertainty in measurement, new theoretical solutions to the task keep appearing. As with any other part of exact testing of physical laws, the appeal of this issue stems from both the relevance of the question itself and the potential revelations that may be made by achieving the next decimal place.
Keywords
Maxwell’s equations, electromagnetism, photon, finite mass
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