Time warp at the top: London’s tallest skyscraper validates Einstein’s theory

The City of London’s tallest building, 22 Bishopsgate, has been used for a science experiment—to display a curious quirk of Einstein’s theory of general relativity.
22 Bishopsgate skyscraper (c) ianVisits
It’s all to do with time and how gravity affects time — the stronger the pull of gravity, the slower time proceeds. If you stand on the ground, gravity is stronger than if you’re in a plane, so time in the plane is faster than if you’re on the ground (t