3 ms·
Relativity says it’s impossible for two observers to agree on things like simultaneity, distance, duration, etc. Without reference to astronomical landmarks (ob
by bobbylarrybobby 7y ago
Relativity says it’s impossible for two observers to agree on things like simultaneity, distance, duration, etc. Without reference to astronomical landmarks (observed within a given proximity of the solar system, at low speed) how could anyone agree on the meanings of time intervals?
- wtallis 7y agoI believe the cosmic microwave background provides a reasonably universal rest frame to anchor your definitions of time. It should at the very least be a lot less local than using the rest frame of a particular solar system.
- jurip 7y agoSecond isn't defined in terms of astronomy, it's atomic. Shouldn't matter how fast you go and where. https://en.wikipedia.org/wiki/Second#"Atomic"_second https://en.wikipedia.org/wiki/Second#"Atomic"_second