4 ms·
> with cell phones sync'd to the tower's time, and temp controlled time crystals (like in the apple watch) The best we have is actually GPS time, accurate to ~
by Vogtinator 3y ago
> with cell phones sync'd to the tower's time, and temp controlled time crystals (like in the apple watch)
The best we have is actually GPS time, accurate to ~100ns (https://en.wikipedia.org/wiki/Global_Positioning_System#Accuracy https://en.wikipedia.org/wiki/Global_Positioning_System#Accu...).
- Abekkus 3y agoI'm wondering if weather patterns can drop that accuracy back to mere microseconds. Just in case, you can rely on wired terrestrial signals for similar precision: https://en.wikipedia.org/wiki/Precision_Time_Protocol https://en.wikipedia.org/wiki/Precision_Time_Protocol
- bonestamp2 3y agoSure, but my point is that basically everyone has at least a basic cell phone (and I assume the cell towers are using GPS to sync their time).