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Code Number: 5A30.15
Demo Title: Conductors & Insulators
Condition: Good
Principle: Electrical Conductivity
Area of Study: Electricity & Magnetism
Equipment:
Conducting and Non-Conducting Rods, CD Player with Conduction Rods and Speaker System, and LED Conducting Tubes.
Procedure:
While the conductors or non-conductors may be snapped into the holder, it is not necessary for the demonstration to work. Just lay the rod on top of the contacts to see if they are either conducting or non-conducting. It is especially recommended that you do not try to snap the carbon rod into the holders as this will probably break the rod.
The small electronic circuits are designed to show conduction of the human body. The one with the LED will light up when the two leads are held, and the intensity of the LED will vary with the resistance of the body. The one with the speaker will have a different pitch according to the resistance of the body when the leads are held.
References:
- James Lincoln, "The Energy Stick", TPT, Vol. 57, #9, Dec. 2019, p. 652.
- Richard J. Fitzgerald, "An Insulator with Conducting Electrons?", Physics Today, Vol. 68, #9, Sep. 2015, p. 18.
- Grant Mellor, "What is a Voltaic Electricity?", Flying Tinsel, 1993, p. 77 - 79.
- Grant Mellor, "Conductors and Insulators", Flying Tinsel, 1993, p. 51 - 55.
- Herb Strongin, “Conductors and Insulators“, Science on a Shoestring, p. 158.
- Borislaw Bilash II, “Group 14: Metals versus Nonmetals“, A Demo A Day – A Year of Physical Science Demonstrations, p. 136.
- Borislaw Bilash II, “Conductors versus Insulators“, A Demo A Day – A Year of Physical Science Demonstrations, p. 268.