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Discussion: Simple Harmonic Motion tool
Topic: two different tools
Related Item: http://mathforum.org/mathtools/tool/1127/


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Subject:   Two Different Tools--Wierdness Everywhere
Author: Craig Russell
Date: Feb 5 2004
It's obvious to me what is happening in the Canadian applet--the same sort of
thing that happens in the activity you and Kathleen demonstrated using a
spreadsheet.  You can get almost the same effect using a graphing calculator--
just make the wavelength (1/omega, essentially) slightly larger or smaller than
a few pixel-widths.  Fairly sophisticated math students might be asked to try
to explain WHY the granularity of the display affects the appearance of the
curve.  Why does it look like the superposition of two sinusoids of slightly
different frequencies [such as sin(5x)+sin(6x)]?

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