A nanodegree of difference in temperature will change the length of the metal.
Comment on suck it, math nerds
bstix@feddit.dk 8 months ago
Easy. Take a wire that is exactly 1 meter long. Form a circle from the wire. The circumference of that circle is 1 meter.
exocrinous@lemmy.dbzer0.com 8 months ago
bstix@feddit.dk 8 months ago
And this why you don’t touch the thermostat.
RampantParanoia2365@lemmy.world 8 months ago
Laser measure
funkless_eck@sh.itjust.works 8 months ago
uh huh. and how are you measuring that?
lemmyman@lemmy.world 8 months ago
Now the engineers and/or scientists are crying
Incandemon@lemmy.ca 8 months ago
Scientists maybe, engineering is all about calling things close enough.
HopFlop@discuss.tchncs.de 8 months ago
You don’t need to, it’s defined. (Lol). If you take a circle with a circumference of 1, then its circumference will be 1… I think I might have lost some braincells reading this.
Kill_John_Lennon@lemmy.world 8 months ago
He obviously meant to say how do you measure that it’s exactly 1m, even when still in a straight line. Exactly being the key word here.
hesdeadjim@lemmy.world 8 months ago
But is the circumference of the outer circle or inner circle 1m? The wire has a nonzero width.
Blue_Morpho@lemmy.world 8 months ago
I don’t have to measure it. I stick under glass and define it as the standard which all other measurements are derived from.
bstix@feddit.dk 8 months ago
I will be measuring it in meters. One. There you go.
MxM111@kbin.social 8 months ago
Ok, you got another source of water - physicists.
ColeSloth@discuss.tchncs.de 8 months ago
Plancks
RampantParanoia2365@lemmy.world 8 months ago
Exactly. Use a laser measure to cut a plank, then use that for reference!
RampantParanoia2365@lemmy.world 8 months ago
Laser Measure.