The mind-bending new science of measuring time

[gronky_]

https://www.ft.com/content/625d2043-a5a4-4d6d-bbe9-42e524a211dd

[timbilt]

https://archive.md/Bn3Dz

[fallinditch]

> These clocks would lose less than a second over the age of the universe. An optical clock is so precise that if you lifted one a centimetre off the ground, it would detect the gravitational dilation foretold by Einsteinian relativity.

That's one helluva rabbit hole to go down.

[cr125rider]

That one wonderful! One of the most captivating articles I’ve read in a long time.