NOV 29, 2016 4:26 AM PST

Galileo's Theory In The 21st Century


Galileo was famous for many things, including a theory that two objects, of differing mass, will fall from a common height at the same rate. While it has been said he conducted an experiment on this hypothesis by dropping objects from the top of the Tower of Pisa, it's unlikely that it happened that way as there are no reports by Galileo of such an experiment. Had he done that, he surely would have recorded the results specifically in his book "On Motion" Dutch scientists Simon Stevin and Jan Cornets de Groot did however conduct a similar experiment, dropping objects from the top of of the Nieuwe Kerk in Delft in the 16th century, in an attempt to test Aristotle's theory that objects fall at different rates depending on their mass.

Centuries later, the famous theory of a cannonball and a feather was tested inside a NASA vacuum chamber in Ohio. Galileo's theory on how fast something falls was postulated in an environment where this is no air resistance, but it was not possible to re-create that in his time. NASA's Space Power Facility was created to test nuclear propulsion in an airless chamber similar to outer space and served as a perfect backdrop for the age old inquiry. Brian Cox, a British Physicist and host of a BBC science program visited the facility to see the theory put into action. In a chamber devoid of air, a bowling ball and a few feathers were hoisted into the air and dropped at precisely the same time. The theory held, as the objects fell at the same rate. This proves the theory that an object's mass does not determine how fast it will fall to earth, it's gravity that determines that.
About the Author
  • I'm a writer living in the Boston area. My interests include cancer research, cardiology and neuroscience. I want to be part of using the Internet and social media to educate professionals and patients in a collaborative environment.
You May Also Like
DEC 28, 2020
Space & Astronomy
China Willing to Share New Moon Samples
DEC 28, 2020
China Willing to Share New Moon Samples
China has recovered the first new moon rock samples in decades, and from a previously unexplored part of the moon. Now w ...
MAR 26, 2021
Earth & The Environment
Iconic Bald Eagles are Thriving
MAR 26, 2021
Iconic Bald Eagles are Thriving
Once dangerously on the brink of extinction, bald eagle populations are thriving throughout the lower 48 states of the U ...
MAR 31, 2021
Plants & Animals
Spring Winds Following Warmer Winters Cause Mass Jellyfish Strandings
MAR 31, 2021
Spring Winds Following Warmer Winters Cause Mass Jellyfish Strandings
Beachgoers are certainly not fond of jellyfish in the water, but seeing hundreds of them wash ashore is an interesting a ...
APR 01, 2021
Health & Medicine
Flavanol-rich Foods Protect Heart from Stress
APR 01, 2021
Flavanol-rich Foods Protect Heart from Stress
Drinking hot cocoa is comforting on cold winter nights, and new research from the University of Birmingham shows that it ...
MAY 10, 2021
Plants & Animals
Sharks Can Use Earth's Magnetic Field to Navigate
MAY 10, 2021
Sharks Can Use Earth's Magnetic Field to Navigate
How do sharks make transatlantic journeys without losing their way? New research published this week in Current Biology ...
JUL 05, 2021
Plants & Animals
Why Are Some Fish Warm-Blooded? A Need for Speed
JUL 05, 2021
Why Are Some Fish Warm-Blooded? A Need for Speed
Great white sharks are warm-blooded, and new research helps explain why.
Loading Comments...