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91、The Nature of Light Pressure
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Preprint of CERN doi :10.5281/zenodo.20360109 or https://doi.org/10.5281/zenodo.20360109 My academic identifier: orcid id: 0009-0005-2185-5790. You may go to the official academic website to retrieve and view relevant research content. Readers may copy this number to search on the official zenodo website (search by English title or English keywords) to view the full English and Chinese pdf texts. Abstract Traditional theories of light pressure usually attribute it to particle impact and momentum transfer of photons on the surface of objects. Although this model can describe the generation of pressure formally, it has an inherent contradiction with the basic physical fact that photons have no rest mass. Based on energy matching, resonant absorption and thermal effects, this paper reinterprets the physical nature of light pressure. It is pointed out that light pressure does not originate from physical collision, but occurs only when the photon energy matches the energy level frequency of matter; the absorbed energy intensifies the thermal motion of microscopic particles, thereby producing a macroscopic mechanical effect. Different materials show obvious differences due to different absorption bands: black objects have wide absorption bands and stronger light pressure, while white objects have less absorption and weaker light pressure. This explanation is logically self-consistent and in line with basic physical laws, revealing the real process of light-matter interaction more essentially and providing a more rigorous theoretical basis for the unified understanding of light pressure phenomena. Keywords: light pressure; photon; energy transfer; energy level matching; thermal effect; light-matter interaction 1 Introduction Light pressure is a physical phenomenon in which light exerts pressure on the surface of an object, with important research value in astrophysics, optical engineering, space propulsion and other fields. In classical and modern physics, light pressure is usually interpreted as macroscopic thrust formed by momentum transfer when photons hit the surface of objects as particles. However, photons have no rest mass, and the direct analogy of macroscopic collision mechanism to the microscopic interaction between photons and matter has an obvious gap in theoretical foundation. To reveal the origin of light pressure more accurately, this paper systematically analyzes and rigorously expounds the generation mechanism of light pressure from the perspective of energy matching and selective absorption.  |
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