I’ve seen some blueprints who use 3.5. I guess it’s close enough but definitely not too small
Comment on Order of magnitude is a hell of a drug
Professorozone@lemmy.world 3 weeks ago
Electrical engineer. Never used 3. Always 3.14. don’t really get the joke.
Droechai@lemm.ee 3 weeks ago
Professorozone@lemmy.world 3 weeks ago
Strange. If you’re going to use a decimal point, why not the right one?
Droechai@lemm.ee 3 weeks ago
You are correct, I used the wrong one for my region but according to Swedish Wikipedia (bad source) the US and UK uses a . If that is incorrect I’m happy to be corrected!
Professorozone@lemmy.world 3 weeks ago
LOL. That’s not what I meant. Unfortunately it is what I said.
What I should have said is, if you are going to use a number after a decimal point (or comma in Europe) then why not use the right number. My bad.
BrazenSigilos@ttrpg.network 3 weeks ago
Electrician over here is killing the buzz
Professorozone@lemmy.world 3 weeks ago
Electrical engineer. I’m nowhere near as useful as an electrician.
zaphod@sopuli.xyz 3 weeks ago
I just use the pi from my calculator or numpy/matlab.
psud@aussie.zone 2 weeks ago
That’s close enough for radio. You can’t cut an antenna much closer than that precision, and it’ll stretch or shrink with temperature anyway. I guess the error could add up enough to be a problem in lengths of fibre optic cables, especially as they run at about c/3
zaphod@sopuli.xyz 2 weeks ago
That’s kind of the beauty here, you only get a relative error (0.069%) and it’s mostly insignificant to the point of being smaller than your fabrication tolerances. This should also be the case for fibre optics. The error can’t really add up, you scale everything to a multiple of the wavelength and you calculate the wavelength using the speed of light.