SmartAxe.com
Thursday, 25 December 2008 01:59
Most people don't know very much. (Now tell me, if I had guessed that your reaction to that opening would be an initial nodding agreement quickly fading to the realization that it might include you, too, would I have been right?) Read more
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A few months ago I released an experiment video explaining how Eratosthenes calculated the circumference of the Earth using the shadow of sticks. The method was performed almost two millenia ago, and produced quite accurate results (considering the 'equipment' used). But it was far from being the on…