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Mrs. Perkins's Electric Quilt by Paul J. Nahin

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Measuring Gravity

“Kids, you should do this at home!”

2.1 First, a Little Theory

In a number of the discussions to follow in this book, we’ll find that we will need to know the numerical value of the gravitational acceleration at the Earth’s surface, usually denoted, as in the first discussion, by g (pronounced gee). The experimental determination of the value of g is, in fact, a classic experiment performed every year in thousands of college freshman physics labs worldwide. I remember well when I did it as a freshman in Physics 51 at Stanford (1958). I remember it as a clunky, uninspiring experiment that required watching a high-speed, pulsed ...

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