Confirmation of general relativity at Tokyo Sky Tree Research group on April 10, 5:24
At the Tokyo Sky Tree observatory, a research group such as the University of Tokyo uses the latest ultra-high-precision clock to confirm that the time is slightly faster than the ground, and the speed changes due to gravity He was able to confirm Einstein's theory of general relativity.
According to Einstein's theory of general relativity, when gravity weakens, such as at high altitudes, the time advances slightly faster, but an extremely accurate clock was needed to detect it.
Research groups such as Prof. Hidetoshi Katori of the University of Tokyo have installed the latest ultra-high-precision clock called the “optical lattice clock”, which is only 16 billion years apart by 1 second, at the 450-meter observatory in the Tokyo Sky Tree. And measured the deviation from the ground light grid clock.
As a result, the clock at the observatory was able to confirm general relativity, almost four billionths of a day a day, almost the same as the theory-based prediction.
This time, the development of a portable “optical lattice clock” was carried out, and observations were made, demonstrating high accuracy.
Professor Katori of the University of Tokyo said, "In the future, this clock will be able to detect changes in gravity and be applied to crustal movements and exploration of underground resources."