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has been cited by the following article:

• TITLE: On the Possibility of Variable Speed of Light in Vacuum

  AUTHORS: Qinghua Cui

  KEYWORDS: Speed of Light in Vacuum, Fine-Structure Constant, Cosmic Microwave Background, Earth-Moon Distance

  JOURNAL NAME: Journal of High Energy Physics, Gravitation and Cosmology, Vol.8 No.4, September 29, 2022

  ABSTRACT: We previously revealed a quantitative relation by which the fine-structure constant α can be described by the temperature T of cosmic microwave background (CMB) with several other fundamental constants, including the elementary charge e, the Boltzmann constant k, the Planck constant h, and the light of speed in vacuum c. Given that the value of α is quite conserved but T is variable across CMBs, we propose that c changes with T and can be given by T, the present CMB temperature T0 and the present light speed c0. As T is continuously decreasing, c is thus predicted to decrease at a rate of ~2.15 centimeters/second (cm/s) per year. Moreover, we provide a lot of evidence to support this finding. In conclusion, this study suggests a possibility of variable speed of light in vacuum.