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Things You Thought You Knew – What is Energy?
StarTalk Radio
The Conversion of Energy
Our lives and everything we do is nothing but a ballet of the conversion of energy from one form into another. So when we consume food that has calories, a one for one definition of calorie is energy. And by the way, that conversion of your body's calories to your energy is not perfectly efficient. That inefficiency gets converted to heat. Your body heats up when you exercise because now it's part of your temperature regulating system. But I'm just saying, when you drive a car, the car eats up. In the same way, the wheels and the tracks of a roller coaster are actually getting hot because of the inefficiencies of the conversion. Because there's inefficiencies in
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