Visualizing Harmonics and Square Waves

Very illuminating.  Very cool.   We want more!  Show us how a mixer works! 

From:
http://hackaday.com/2015/09/17/visualizing-the-fourier-transform/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29&utm_content=Netvibes


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