by Eric Bogatin | Aug 7, 2011 | Astonishing Science News, Inspiration
Workout cycle from PlugOut, a supplier of exercise equipment that turns your sweat into electricity. The last time I was at the gym walking on the treadmill, I looked around and saw dozens of people sweating away, running, climbing stairs and pedaling bikes, all under...
by Eric Bogatin | Aug 6, 2011 | Inspiration
Thomas Greenslade wrote a very simple article for the Physics Teacher in March 2011 sharing a beautiful, wooded model from the L E Knott Apparatus Company which illustrates, at a glance, the principle that the area of a circle is really 1/2 x radius x circumference....
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