4 ms·
I'm not sure about the larger issues surrounding the lunar time standard, but 55 microseconds per day is about 0.64 ppb. Even good OCXOs drift more than that. A
by AdamH12113 3y ago
I'm not sure about the larger issues surrounding the lunar time standard, but 55 microseconds per day is about 0.64 ppb. Even good OCXOs drift more than that. A standard crystal oscillator like the kind used in computers drifts by multiple seconds per day. Unless your oscillator costs more than your computer, that kind of accuracy is going to be beneath the noise floor.
- thfuran 3y agoYou're right that CPUs probably weren't the best example. My point was more that there are everyday things that operate at timescales where nanoseconds matter. 55 us per day is larger than the effects of either special or general relativity on GPS, but both need to be accounted for in order for the system to be useful.
- MeImCounting 3y agoThe issues arent arising from cellphones and personal computers. Precise time may not be necessary for building web services but it is the basis of precise navigation systems and other scientific endeavors such as astronomy and quantum computing. Since navigation and science will probably be way up on the todo list above twitter I think nanosecond accuracy lunar time is clearly justified.