The question is if the Relativistic Kinetic Energy formula:
KE_rel = (gamma -1) mc**2
Has it been verified using thermal calorimetry?
SINCE I WROTE THIS QUESTION, I FOUND OUT ABOUT THE BERTOZZI EXPERIMENT ON RELATIVISTIC ELECTRONS. THAT SETTLES THE ISSUE OF RELATIVISTIC KINETIC ENERGY. THAT IS THE CORRECT ANSWER.
https://www.youtube.com/watch?v=tmdp3jd8rig
MY THEORY PREDICTS WEAKENED FORCES AT HIGH ABSOLUTE VELOCITIES. THAT IS CONSISTENT WITH OBSERVATIONS AND ANATOLI BUGORSKI ACCIDENT.
READ ABOUT THE HYPERGEOMETRICAL UNIVERSE THEORY HERE:
https://www.linkedin.com/pulse/what-do-you-ever-want-challenge-einstein-marco-pereira-phd-4dmbe/?trackingId=1CLUKJviTZSA7qZ%2FrACTsw%3D%3D