Cognitive bias in physics, with respect to Einstein's relativity, is demonstrated by the famous experiment of Pound and Rebka (1960), which in reality refutes Einstein's general relativity.

Einstein's general relativity postulates that, at each position within a gravitational field, we must measure the same frequency f0, but seen from a distance, the frequency at the position of another gravitational potential is different from f0. As gravity decreases with the increase in the distance from Earth, in the Pound-Rebka experiment at the top of the tower, the frequency of electromagnetic radiation must be higher than at the bottom. If electromagnetic radiation was able to have the same frequency f0 at the top of the tower as at the bottom of the tower, an observer at the top of the tower would have to be able to increase gravity to the same level that gravity has at the bottom. But the decrease in gravity with an increase in the altitude cannot be reversed. It is demonstrated that the relativistic interpretation of the Pound-Rekba experiment showing a doubling of the gravitational frequency shift for "two-way" observations violates the principle of energy conservation, whereas the classical interpretation of the experiment identifies the doubling of the gravitational frequency shift as a pure mathematical effect that has no physical reality, which always occurs when we subtract relative differences with opposite algebraic signs from each other. It is shown that Einstein's general relativity only seemingly corresponds with reality; thus, gravitational frequency (time) shifts must be interpreted according to classical considerations. [ABSTRACT FROM AUTHOR]