3 ms·
Yes, of course. There are lots of these. pi ~= sqrt(g). Common trick to make period of pendulum approx = 2*sqrt(l) which is easy to calculate.
by renewiltord 2y ago
Yes, of course. There are lots of these. pi ~= sqrt(g). Common trick to make period of pendulum approx = 2*sqrt(l) which is easy to calculate.
- madcaptenor 2y agoBut this one isn’t a coinicidence - the idea of having the unit of length be the length of a seconds pendulum predates the meter we have. (It doesn’t work because the period of a pendulum depends on your latitude.)
- renewiltord 2y agoYou're kidding me! That's a fact I had no idea about. I thought I was damned clever for having figured out the thing as a child and then found out all the other kids knew it too. I never thought to check the origin. Made my day. Thank you.
- School-Cotton 2y agoThere was an HN post about the pi^2=g connection not too long ago.
- madcaptenor 2y agoIt’s come up several times.