|MadSci Network: Physics|
In a posting on your web site Nov 12, 2000, ID968551309.Ph, Dan Mayer says that "excess radius" of the earth is the difference between the measured radius and the predicted radius. He says measured radius is a line on the surface of the earth between the equator and the North pole. Predicted radius is the circumference of the earth at the equator divided by 2Pi. Predicted can also be the square root of the measured area of the earth divided by 4Pi. Richard Feynman in "Six Not-So Easy Pieces", page 126, said that you get the measured radius by digging a hole in the earth from the equator to the center of the earth and measuring that distance. Which is right?
Re: How do you determine 'excess radius'
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