光速的恒定性，或者说，
The constancy, or otherwise, of the speed of light
摘要：
新的变化的光速（VSL）理论作为宇宙膨胀模型的替代品进行了讨论，并审查了光速变化的证据。工作与VSL，但主要涉及推导普朗克的黑体能量分布的气体一样的以太使用麦克斯韦统计也被认为是。双狭义相对论是对狭义相对论的一种修正，它考虑了普朗克尺度下与观测者相关的量子效应，并发现光速在阈值频率以上的变化是该理论的必要条件。
英文摘要：
New varying speed of light (VSL) theories as alternatives to the inflationary model of the universe are discussed and evidence for a varying speed of light reviewed. Work linked with VSL but primarily concerned with deriving Planck's black body energy distribution for a gas-like aether using Maxwell statistics is considered also. Doubly Special Relativity, a modification of special relativity to account for observer dependent quantum effects at the Planck scale, is introduced and it is found that a varying speed of light above a threshold frequency is a necessity for this theory.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
