3 ms·
I think it’s particularly clever in a relativistic universe to define length and time by light intervals: they’re a natural spacetime yardstick, for which all o
by zmgsabst 3y ago
I think it’s particularly clever in a relativistic universe to define length and time by light intervals: they’re a natural spacetime yardstick, for which all observers can agree.
- johndunne 3y agoIndeed. I wondered how the definition would be affected by gravitational/relativistic time dilation. I learned that the calibrated clock would have been calibrated in the same local frame as the ceasium atom. It's already baked into the definition! Science is cool.