• xthexder@l.sw0.com
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    1 day ago

    The actual method for calibrating exact resistor values involves starting with a lower resistance and etching away parts of it with a laser to get to the exact value you want. You probably still couldn’t get as many decimal places as OP tho

    • trolololol@lemmy.world
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      1 day ago

      And then in a week it drifts into a different value and you have to calibrate it again.

      And that’s assuming your room temperature is controlled for all experiments.

      And that’s also assuming the current going through it is 0 so it is always exactly at room temperature.

      Virgin theoretical physicist vs Chad experimental physicist goes brrr

      • xthexder@l.sw0.com
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        1 day ago

        For really sensitive applications like voltage references, they actually build a little enclosure around the part with a built in heater to keep it at a constant calibrated temperature. The boards also often have cutouts to reduce thermal transfer and things like the board flexing causing stress to the part.

        The resistor itself won’t really drift at a constant temperature, especially in a sealed environment where condensation, corrosion, and dust aren’t a factor.

      • sepi@piefed.social
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        1 day ago

        As a layperson, what happens if crumbs from my sandwich fall all over your chad experiment setup?