this post was submitted on 31 Mar 2025
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Science Memes

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[–] JohnDClay@sh.itjust.works 28 points 3 weeks ago (2 children)

There is if you have a potentiometer and a steady enough hand!

[–] muntedcrocodile@lemm.ee 18 points 3 weeks ago

U probably need a climate controlled box as well.

[–] SaharaMaleikuhm@feddit.org 3 points 3 weeks ago (2 children)

Can you even measure that accurately? Like is it physically possible?

[–] xthexder@l.sw0.com 4 points 3 weeks ago* (last edited 3 weeks ago)

Based on some rough calculations... no. A precision of 0.0000000000001 ohms is 1000x less than the resistance of 1um of copper with a diameter of 1cm (A piece of wire 10,000x wider than it is long). I'm sure a few molecules of air between your contact points would cause more noise in the measurement.

[–] Adalast@lemmy.world 1 points 3 weeks ago (1 children)

I thought it had to do with physicists working off theoretical calculations finding precise values for the circuit and not realizing that components come in discrete values.

[–] anomnom@sh.itjust.works 2 points 3 weeks ago (1 children)

Yeah, but they could just calculate the right mix of parallel and series discrete resistors to get there.

It’s gonna make a long BOM though.

[–] Adalast@lemmy.world 1 points 3 weeks ago

Lol, I was actually going to add that but decided it would be too pedantic if I said it myself.