This project draws the light spectrum. Just click the green flag to start, and push the flag again to see it over again. You can change how fast or slow it draws with the slider at the top, but note that if you make it draw faster, the picture won't be as sharp. Thanks for watching and please leave a comment. If you loved it push the love it button! Note: I just noticed that it doesn't always draw the whole thing. You may have to download it to see it really work!