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 7 years by Anonymous

i wanted to be the first! :(

Posted 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 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 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 7 years by Anonymous

Who cares!?!? the videos great!

Posted 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
65820 times

More from MIT Department of Physics Technical Services Group

MIT Physics Demo -- Low Friction Atwood Machine

MIT Physics Demo -- Low Friction At...

Added over 7 years ago | 00:00:46 | 49254 views

Fluorescent and Neon Tubes in an Electric Field

Fluorescent and Neon Tubes in an El...

Added 6 years ago | 00:02:02 | 38594 views

MIT Physics Demo -- Driven Mechanical Oscillator

MIT Physics Demo -- Driven Mechanic...

Added 8 years ago | 00:01:07 | 38958 views

Hinged Stick and a Falling Ball

Hinged Stick and a Falling Ball

Added over 5 years ago | 00:01:23 | 21514 views

The Coriolis Effect

The Coriolis Effect

Added over 6 years ago | 00:03:00 | 86958 views

Physics Demo -- Jumping Ring

Physics Demo -- Jumping Ring

Added 8 years ago | 00:01:40 | 54523 views