TIL a study shows time passes 4 nanoseconds faster per day at the 450m-high Tokyo Skytree observation deck than at ground level. A University of Tokyo professor said clocks "will become tools for measuring time and space, such as differences in altitude, in line with the theory of relativity".

https://www.asahi.com/ajw/articles/13284896
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1gtwpqo/til_a_study_shows_time_passes_4_nanoseconds/

https://noc.social/system/media_attachments/files/113/502/156/470/465/797/original/3b95ce53b0bfb815.jpg