A visual illustration of Fourier series for sawtooth waves
Fourier, Series
Beautiful and intriguing.
Terrific demonstration. Really shows how Etoys can make mathematics visible, and allows tweaking.
It is good to see a fourier synthesis on etoys. The text states it "approximates" a square wave, but it is doing a triangle wave or sawtooth - so that could be changed to avoid confusion. In the second paragraph "are" should be changed to "is".
Also, it crashed twice when I changed the playfield's depth to 25. If that happens always, some sort of warning should be included.
Thank you, Randy. I fixed the wordings in the text. Haven't added the depth limit. I think the problem is the use of Playfields to represent these bars. use Rectangles and a bit of textual script to embed one into another, the end result should be much faster.
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