Background: A series of observational evidences were presented in favour of the hypothesis that the speed of light varies over time according to the fundamental relationship dc / dt = – Hc, where H is the Hubble constant, which is considered a universal constant, in a previous paper titled “Evidence for the variation of the speed of light over time” [1].

The goal of this work is to describe and reaffirm the observable data in favour of the theory, as well as to investigate the implications of this connection for General Relativity.

The Hubble constant is not interpreted as the pace of expansion of the universe with time, but as the rate of reduction of c with time, according to the theory of c variable with time, which gives an alternative explanation of the nature of the cosmic redshift.

Methods: We will demonstrate how this connection explains the phenomena of “anomalous acceleration,” which all spacecraft experience after exiting the solar system [2].

We’ll give a theoretical basis for the basic connection and illustrate how it might be used to determine the theoretical trend of galactic velocity curves.

As a result, we will provide a theoretical foundation for the constant a0 established by the MOND theory in order to correctly explain galactic velocity curves using just baryon matter [3].

The essential Tully-Fisher empirical connection [4,5] that relates galactic velocity curves to galaxy baryon mass is theoretically derived, and the apparent (accelerated) expansion of the universe is justified without the intervention of elusive substances like dark matter and dark energy.

Conclusion: It is concluded that the relationship between the variation of c over time and the variation of other significant physical constants is investigated, demonstrating how this leads to an unanticipated link between electromagnetic and gravitational processes, represented by c and G.

Author(s) Details:

Giuseppe Pipino,
Technical High School, ITIS Malignani, Udine, Italy.

Please see the link here: https://stm.bookpi.org/NTPSR-V2/article/view/6615