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Charged Sheet

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Use “Fun Fly Stick” to charge up conductive sheet.

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Mylar strands align with electric field.

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Place support rods together to form cylinder. Electric field of cylinder points outward radially.

  • Located in L01, section A-2
coulomb force on water1

Coulomb Force on Water

coulomb force on water1

coulomb force on water 2

Charge teflon rod with fake fur (shown in above photo) by rubbing together.

When charged rod is brought into the proximity of water stream, attraction between water and charged rod will cause stream to deflect.

  • Rod and fur located in L01, section A-1.
  • Bucket with hole, and tub, located in L35, section G-3.

Neon Wand 4

Neon Wand

 

Neon Wand Demo Picture

Neon Wand Demo Picture 2

  • Transparent glass tube containing neon gas glows orange when
    shocked by Van de Graaf (Be careful not to shock yourself!- tape the wand
    to an extension rod, like a meter stick, if you’re worried about getting shocked). This can be done with the any of the spectral tubes.
  • Located in L01, section A-2, bottom shelf, in tub with other
    Van de Graaf accessories.
  • Cute video about the atomic physics of neon signs. http://www.youtube.com/watch?v=zPDoBjlpxXY

 

Electrophorous

Electrophorus

 

Electrophorus demo picture

  • Charge the plastic electrophorus plate negative by rubbing it with fur. Placing the metallic plate on top of the plastic plate and connecting it to a grounding wire will give the metallic plate a positive charge by induction.
    Existence of these charges can be verified using the electroscope. The plastic
    plate should retain its negative charge long enough for demonstrator to charge metal plate several times.

Location

  • Electrophorus demo: L01, section A2, top shelf.
  • Electroscope: L01, section A2.

 

Charge on Conductor

Charge on Conductor

 

Charge on Conductor demo picture

Charge on Conductor demo picture 2

  • Use rod and fur to charge conductors. To
    determine charge distribution on conductors use wand and electroscope, or
    proof plane and Faraday Ice Pail (right) with electrometer.
  • According to theory, no charge should reside
    on the inner side of a hollow conductor.

Location

  • Conductors: L01, section B1.
  • Rod and fur: L01, section A2.
  • Wand and proof plane: L01, section A2, plastic
    bin.
  • Faraday Ice Pail: L01, A2.
  • Electrometer: L01, A1.

 

electroscope b

Electroscope

 

Electroscope demo photo 2

  • Purpose: Study the nature of electric charge in a qualitative
    fashion.
  • Charging a rod: to create a positivley charged rod rub glass with silk; to create a negatively charged rod rub teflon with fake fur (the blue stuff).
  • To determine the conductivity of an object: Charge the electroscope, then touch the electroscope top (metal sphere) with the object. If the object is an insulator the electroscope will not respond to the touch.
  • Located in L01