a second is 9,192,631,770 wiggles of a cesium atom

How I got here

Started with

“how is a second defined”

Ended at

Optical clock

The Trail

1. “how is a second defined” (google.com)
2. Second (en.wikipedia.org)
3. Caesium standard (en.wikipedia.org)
4. Atomic clock (en.wikipedia.org)
5. Optical clock (en.wikipedia.org)

   the next definition. accurate enough to detect gravity differences of a few cm of height

Keep going

• why people still haul CRTs to Melee tournaments · Dev Malhotra · 6 sources
• the Pioneer anomaly turned out to be heat · Dev Malhotra · 6 sources
• you can measure the brain's magnetic field, which is absurdly faint · Quinn Harlow · 6 sources
• the theory that 297 years of the middle ages never happened · Yuki Tanabe · 6 sources