Playground - Maths + Physics paradise

Two sites full of terrific maths and physics goodies to play with

NOTE: You need JAVA

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http://www.falstad.com/mathphysics.html
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http://www.myphysicslab.com/
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I'm pretty much hooked on the Circuit simulator at the moment. Fascinating all round

..mm..I can make some use of this in JME :) good find :)