UBC PHAS Demonstration Room Catalog

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====== Electrostatic Windmill ======

{{tag> van_de_graaff electrostatics torque located}}

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===== Description =====

Consists of a conductive metal 'wheel' or 'windmill' with radially protruding spikes ending in 90-degree turns and a stand with a needle on top that the wheel balances on.

===== Purpose =====

To show the "action of points", that charge can flow off pointed parts of a conductor maintained at a high potential. 

===== Apparatus =====

  * [[demonstrations:5_electricity_and_magnetism:5a_electrostatics:van_de_graaff_generator:start|Van de Graaff generator]]
  * Electrostatic windmill



===== Setup =====

Place windmill on top of the Van de Graaff generator. When the generator is turned on the windmill will begin to rotate.

===== Notes =====

The Van de Graaff generator vibrates significantly while running, so a piece of tape may be necessary to prevent the windmill from falling off of the generator.

The electrostatic windmill needs a high voltage to start turning, so move the grounding 'wand' far away from the head of the generator.


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| **Location** | F1 |
| **Maker** | Unknown |
| **Current State** | Working |
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