Van_Der_Graaf_generator

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					       Van Der Graaf generator
The Van Der Graaf generator is such a famous piece
  of Physics equipment that even this Rock group is
  named after it!




                                 Play a sample!
  The Van Der Graaf generator

• How the Van Der Graaf generator works

• Sparks and a model for lightning
        Van Der Graaf generator
In your group, draw a diagram of the Van Der Graaf
generator (with labels) and explain how every single part
works.
You can bare in mind these points to help you:
• A metal rubbed against rubber scratches electrons away
from the rubber
•Electric charges always distribute evenly around the surface
of a metal
• An uncharged metal touching a charged metal will be
charged with the same charge by contact
        Van Der Graaf generator
Some more hints!
• What happens as the rubber
belt rubs against the bottom
comb of needles?
• The top comb is connected to
the metal dome. How does this
feature allow the dome to
charge positively?
• Why aren’t the charges on
the
• Metal dome travelling down
the body of the generator?
          Van Der Graaf generator
• The rubber belt moved by
the pulleys rubs against the
comb of needles.
• These needles scratch
some electrons away from
the belt, leaving positive
charges on it, which are
collected by another comb of
needles at the top.
• This top comb is connected
to the metal dome, on which
the charges deposit.

				
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