I’ve actually found 1% to be a lot more common nowadays.
Comment on Virgin Physicists
Cornelius_Wangenheim@lemmy.world 5 months agoReal world resistors usually have a tolerance of ±5%, so you’ll never get anything that precise.
duckythescientist@sh.itjust.works 5 months ago
WolfLink@sh.itjust.works 5 months ago
Grab a box full and test a bunch until you find one that works well for your use case. That way you end up with a resistor that’s much better than the rated tolerance you’d get if you just grabbed one resistor at random.
lemming741@lemmy.world 5 months ago
That’s why I keep a spool of 20 AWG nichrome on hand. Spool off 9.7195853528209 feet and it’ll be bang on.
Lv_InSaNe_vL@lemmy.world 5 months ago
So 1 inch of your wire would weigh ~0.0987 grams, so to measure down to 8.6350242338508 inches of wire your scale would need to weigh down to ~0.00000000000007 grams. Which is the weight of about a dozen atoms or so.
lemming741@lemmy.world 5 months ago
Yeah which is why you use a Kibble balance. Are you sure you’re cut out for this kind of work?
Lv_InSaNe_vL@lemmy.world 5 months ago
I’m not a scientist, I’m just in IT haha
I figured there was a way to measure that small of weight but I didn’t know!
Opisek@lemmy.world 5 months ago
We move onto the next issue. How to precisely measure the amount of wire?
ZombiFrancis@sh.itjust.works 5 months ago
Eyeball it. Gotta squint right tho.
lemming741@lemmy.world 5 months ago
If you trust the gauging, you weigh it.
interdimensionalmeme@lemmy.ml 5 months ago
With a 6 digit voltmeter
piecat@lemmy.world 5 months ago
With an ohm meter?