Comment by CamperBob2
Comment by CamperBob2 5 days ago
I'd be tempted to fill it with water with something dissolved in it to make it more conductive (and probably more viscous), and include LEDs whose brightness and/or color reflects the conductivity at their location. The rationale being, why should I do all that math when Nature will do it for me?
Isn't that precisely his first idea? A device containing a conductive liquid (mercury) that takes care of closing the circuits and the turning on the LEDs.