GI. Mrs Perkins’ Electric Quilt
Paul Nahin discusses his fabulous new book “Mrs Perkins Electric Quilt“, mosquitos, falling through the Earth, whether mathematics is “real” and much more!
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Stephen Morris said,
October 21, 2009 at 6:58 pm
It is very neat that it takes the same time to fall from one place on the earth to any other point. I hadn’t come across that before.
Galileo came up with something similar, the time it takes for a bead to fall along a rod from the top of a circle to any point on the circle is the same.
Shawn said,
January 12, 2012 at 3:55 am
What happens if you miss and just get pulled toward the Earth’s center?