Fun With Physics

If you like physics — and slow-motion footage of science experiments — you’ll enjoy this very cool BBC video that recreates a legendary experiment by Galileo Galilei.

According to the story, Galileo began dropping objects of different weights from the top of the Leaning Tower of Pisa.  Whether heavy cannonballs, lighter musket balls, or objects made of gold, silver, or wood, they all hit the ground at the same time.  Galileo therefore realized that gravity affects all objects and accelerates them at the same rate.

The BBC recreation takes the experiment one step farther, by dropping a bowling ball and some flouncy ostrich feathers.  They do it first in regular atmosphere, where air resistance causes the feathers to drift gently to the ground, and then when the air has been pumped from the room to create a vacuum.  It’s jaw-dropping to watch the feather and the bowling ball fall, in slow motion, at exactly the same rate and then crash to the ground.

There’s an Ohio connection to this story about Galileo, science, and the BBC, too:  the room where the BBC does the experiment at the NASA Space Power Facility in Sandusky, Ohio, which features the largest vacuum chamber in the world.

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