Comment by byearthithatius

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?

Water is a lot less luminescent than LEDs. I think the effect might be reduced if changed to a water based display.

At such a small scale it will not slosh around satisfyingly.

i was wondering whether this could be hardware accelerated.