**Category:**

Research Papers

**Sub-Category:**

Relativity Theory

**Date Published:**

April 20, 2019

**Keywords:**

coordinate and time transformation, kinematics, universal frame of reference, one-way speed of light, anisotropy of cosmic microwave background

**Abstract:**

The article shows that there are infinitely many kinematics in which one-way speed of light is always equal to c. The kinematics of Special Theory of Relativity (STR) is only one of those infinitely many kinematics.
It presents that mathematics on which STR kinematics is based can be interpreted differently and this leads to other conclusions on the properties of this kinematics.
In this article, the whole class of linear coordinate and time transformations was derived.
Transformations were derived on the assumption that conclusions from Michelson-Morley’s and Kennedy-Thorndikea’s experiments are met for the observer from each inertial frame of reference, i.e. that the mean velocity of light in the vacuum flowing along the way back and forth is constant. It was also assumed that there is at least one inertial frame of reference, in which the velocity of light in a vacuum in each direction has the same value c, and the space is isotropic for observers from this distinguished inertial frame of reference (universal frame of reference). Derived transformations allow for building many different

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