Sunday, July 03, 2011

365 Doodles - Day 184

Another gravity-themed illustration that wasn't used in the QI 'G' Annual. It's Galileo Galilei (1564-1642) performing his famous 'My balls are dropping' experiment on the leaning tower of Pisa.

Well, I say 'famous'; there's no evidence that the experiment ever happened in quite that manner. Whatever the truth is, his careful measurements of falling bodies proved that all objects, regardless of size or weight, accelerate at the same rate as they fall. He also worked out that it was wind resistance and atmospheric pressure that slowed the fall of lighter objects. Extraordinarily, a leaf will achieve the same velocity as a cannonball in a perfect vacuum. In fact, the science show Mythbusters proved it a couple of years ago with a hammer and a feather:



Great eh? Another picture tomorrow.

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