4 ms·
1 light-nanosecond is about a foot. 1 sound (at sea level)-millisecond is also about a foot. Meaningless coincidence, but still handy for back-of-the-envelope
by kijiki 10y ago
1 light-nanosecond is about a foot. 1 sound (at sea level)-millisecond is also about a foot.
Meaningless coincidence, but still handy for back-of-the-envelope calculations.
Suck it metric system! =)
- harry8 10y agoSome numbers in physics would have come out really nicely if they'd standarised a meter at the length of a foot instead of the length it is. Using imperial units though, ugh, just say no. Unless you're too polite in which case you should say no thank you.