waves.jelia.nyc
Electromagnetic magic, explained
An invisible kind of wave carries your Wi-Fi, your phone calls and the radio in the car, and it is also the light you read this by. This site is a visual, hands-on guide to what those waves are and how they work, from the first spark of an electric charge to the colors of a sunset.
No physics background needed. Every chapter starts in plain English and goes as deep as you want to follow it.
WatchEach chapter opens with a short narrated walkthrough. Press play, sound on.
PlayInstruments you can drag, slide and break, with the real numbers updating live.
ReadPlain-English sections, with "go deeper" panels for the maths when you want it.
Start here · the originalWhat 2.4 GHz actually means
The page that started this site: the band your Wi-Fi, Bluetooth and microwave oven all share.