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.

This is exactly how high precision resistors are calibrated. A laser is usually used to notch out bits of the resistor to tune it after it’s made.

You could get exactly 6.1854838709677 for an instantaneous moment by heating up a 6ohm resistor.

When I think of digital signal processing I think of things like audio and Fourier transforms. In my experience there’s quite a bit to graphics programming that’s different from that. A lot of shader code is linear algebra / matrix math, and physics equations for light. There’s also a lot of thinking about memory layouts and how to reuse calculations as much as possible.

I say this as someone who does a lot of graphics programming in my job but failed “Feedback Control Systems” the first time through.