Tesla was an awesome engineer, but was completely wrong here.The theory of relativity he described as "a mass of error and deceptive ideas violently opposed to the teachings of great men of science of the past and even to common sense." "The theory, "he said, "wraps all these errors and fallacies and clothes them in magnificent mathematical garb which fascinates, dazzles and makes people blind to the underlying errors. The theory is like a beggar clothed in purple whom ignorant people take for a king. Its exponents are very brilliant men, but they are metaphysicists rather than scientists. Not a single one of the relativity propositions has been proved."
1935
The New York Times,
Tesla
Relativity has been proven correct time and time again.