Home     Contact     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS     Terms of services     Privacy policy  
   
 Home      Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science   


<< Back to INDEX

Feather VS steel balls in absolute vacuum [Science]
posted August 14 2012 20:19.32 by Giorgos Lazaridis




Here is the history of this experiment. Galileo was studying the acceleration of rolling objects. His simple experiment had a slightly inclined, onto which balls of different size and weight (and material) rolled. Using a water-clock mechanism with a very precise weight balance, he calculated the time that each ball took to cover the distance.

What he discovered was fascinating, and still impresses people who watch this experiment. No matter how much an object weights, it always falls with the same acceleration rate! For example, if a feather and a steel ball fall from the same height at the same time, they will both reach ground at precisely the same time. It sounds so weird because we all know that the feather will fall much slower. That is true, but there is another force that acts to both objects: the air resistance.

If someone performs this experiment in a vacuum he will discover that both the feather and the steel ball, regardless their huge weight difference, they will both fall at the same acceleration rate. Scientists have measure this acceleration rate and found it 9.81 m/sec2 near the surface of the Earth. And since not everyone has a vacuum chamber, here is the experiment performed by Backstage Science:



[Link: Backstage Science]
 
Share



You might also like...


Three ways to land on Mars by NASA JPL [Video]

An explosive chemistry experiment in slow motion [Chemistry]

Fracking Earth - Facts and dangers [Science]

How will we have a real Jurassic Park? [Biology]

Quantum computers may not be as fast as our PCs [Physics]

How to Put a Star Into a Bottle [Science]

Are we going to clone a Mammoth??? [Biology]

Amazing experiment with vibrating... sand! [Physics]


<< Back to INDEX



Comments

  Name

  Email (shall not be published)

  Website

Notify me of new posts via email


Write your comments below:
BEFORE you post a comment:You are welcome to comment for corrections and suggestions on this page. But if you have questions please use the forum instead to post it. Thank you.


      

No comment yet...

Be the first to comment on this page!












 Contact     Forum     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS   

Site design: Giorgos Lazaridis
© Copyright 2008
Please read the Terms of services and the Privacy policy