Ivanjs writes –
If you’ve got a dual channel oscilloscope handy (got mine for $49 on ebay), you can create some amazing imagery using the X-Y mode setting and/or ADD setting).
All you have to do is feed a separate signal (like a sine wave and a triangle wave for example) into each of the 2 channels, combine them into 1 signal using ADD, and adjust the signal frequencies til you get something like what you see below.
At some point, you hit a sweet spot that generates these images (these still images don’t really do the moving images justice, but the imagery is still asthetically pleasing. Some of the moving images rival Hollywood monitor effects.
Scope Art – Link.