Most Precise Atomic Clock Ever Built Will Only Lose a Second Every 30 Billion Years

https://lemmy.world/post/17235342

Most Precise Atomic Clock Ever Built Will Only Lose a Second Every 30 Billion Years - Lemmy.World

Does it still need a groundhog to tell it when spring is?
Yes, of course.
But the groundhog will be made out of gallium arsenide.