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Dresden Files Physics: Part 1

denverbroncos

Entry posted by denverbroncos

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The wonderful series of books by Jim Butcher, the Dresden Files, has an awful lot of physics in many of the magical activities that occur. This is the first of several examinations of the science behind the magic, about Harry Dresden's magic rings. These rings store up kinetic energy slowly over time, and he can unleash it all at once on the bad guys. Lets say every time he moves his arm, one ring picks up just 2 joules of energy. Lets also say that he moves his arm 5,000 times in one day. Therefore, he stores 10,000 joules of energy per day. This means he stores up the equivalent kinetic energy of a 1000 kg car going 20 meters per second, a total of 200,000 joules, in just 20 days. That means once every three weeks Harry can hit all manner of nasty things with an invisible car. Not a bad self defense technique, huh?

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