An event at the Dome, November 29th, 2000
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The Death of
Distance: from Pythagoras to Galileo An event at the Dome, November 29th, 2000 |
| Heights of pyramids | Thales measured the height of pyramids. He succeeded in measuring the pyramids by observation of the length of their shadow at the moment when our shadows are equal to our own height. |
This is based on the idea of similar triangles, that at the instant when the length of the shadow of one object coincides with its height, then the same will be true for all other objects.