Massachusetts Institute of Technology
Sign in

Faraday's Cage

In the electric field of a Van de Graaff generator, an unprotected Ben Franklin feels electrostatic forces. However, when a metal cage surrounds him, he is completely shielded against any electricity or electrostatic force.

This is due to the fact that all charges in a conductor reside on the outer surface, and always rearrange themselves to cancel out the electric field in the interior.

Comments (7)

Ótimo para demonstração em aulas de física.
Obrigado pessoal do MIT.
Jefferson Chase

Posted almost 7 years by Anonymous

i wanted to be the first! :(

Posted almost 7 years by Anonymous

hula tiula kkakak ddii..
- thats another comment in Greek and Latin for you…

On a more serious note, would sincerely request you to permit comments in English only. I’m from India and I just don’t understand why people who speak some European language must insist on getting their views across only in their own language. Why cant they speak English like the rest of us?

PS: Your video is great. Keep up the good work!

Parag,
India.

Posted almost 7 years by Anonymous

Hi Parag, We want to try to keep the site as open as possible. You can always do what I do and use Google Translation to see what they’re saying. The fun part is guessing what language it is. :)

Posted almost 7 years by brew

If everything was done in English where would be our cultures by now? That was written in Portuguese, by the way.

Posted almost 7 years by Anonymous

Who cares!?!? the videos great!

Posted almost 7 years by Anonymous

Posted over 2 years by Anonymous 00:00:00

You need to log in, in order to post comments.

MIT Department of Physics Technical Services Group

MIT Department of Physics Technical Services Group

Category: Science | Updated over 5 years ago

Created
February 24, 2009 14:43
Category
Tags
License
Creative Commons Attribution-NonCommercial (What is this?)
Additional Files


Viewed
65031 times

More from MIT Department of Physics Technical Services Group

Speed of a Bullet

Speed of a Bullet

Added over 7 years ago | 00:00:22 | 45929 views

MIT Physics Demo -- Centrifugal versus Centripetal Motion

MIT Physics Demo -- Centrifugal ver...

Added over 7 years ago | 00:01:18 | 35517 views

Rotating Candles in a Dome

Rotating Candles in a Dome

Added over 5 years ago | 00:04:33 | 26326 views

MIT Physics Demo -- Dipole Antenna

MIT Physics Demo -- Dipole Antenna

Added over 7 years ago | 00:00:57 | 42224 views

Moving Sand Cart Over a Rotating Surface

Moving Sand Cart Over a Rotating Su...

Added over 6 years ago | 00:01:13 | 35574 views

MIT Physics Demo -- Microwave Interference

MIT Physics Demo -- Microwave Inter...

Added almost 8 years ago | 00:02:11 | 28854 views