5G10.10 - Magnets

Code Number:
5G10.10
Demo Title:
Magnets
Condition:
Good
Principle:
Magnetic Forces & Fields
Area of Study:
Electricity & Magnetism
Equipment:
Magnets (assorted).
Procedure:

Video Credit: Jonathan M. Sullivan-Wood

The magnet on the swivel may be used to show a magnetic motor.  The diffusion pump magnets can be strung together and then used to show how breaking a magnet in two creates two magnets.

References:
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  • Janice VanCleave, "4, Get Away", Magnets, p. 16.
  • Janice VanCleave, "1, Stickers", Magnets, p. 4.
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  • Rudolf F. Graf, "Where is a Magnet the Strongest", Safe and Simple Electrical Experiments, p. 51.
  • Rudolf F. Graf, "Induced and Residual Magnetism", Safe and Simple Electrical Experiments, p. 52.
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  • Rudolf F. Graf, "Which One is Magnetized", Safe and Simple Electrical Experiments, p. 63.
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  • Rudolf F. Graf, "Magnetic Separation", Safe and Simple Electrical Experiments, p. 65.
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  • Rudolf F. Graf, "How Steady Are You", Safe and Simple Electrical Experiments, p. 67.
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  • Herb Strongin, “Measuring the Strength of a Magnet“, Science on a Shoestring, p. 168.
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  • Julius Sumner Miller, Q187 & A187, Millergrams II – Some More Enchanting Questions for Enquiring Minds, p. 51 & 103.
  • Forrest M. Mims III, "Temporary Magnets, Permanent Magnets, Using and Caring for Magnets", Vol. III - Electronic Sensor Circuits & Projects, p. 60.


Disclaimer: These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist.  The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose.  The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources.  Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks.  These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage.  Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.