See your Wi-Fi. Every ripple is the router's signal, simulated live on your graphics card.
A wave simulator for your home
Your router fills your home with radio waves a few centimetres long. They soak into brick, slip through plasterboard, bounce off the fridge and pile up in corners. This page simulates all of it, wave by wave, on your graphics card.
Works best on a laptop or desktop. Needs WebGL2.