Geomagnetic field demonstration

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SUMMARY

The discussion centers on demonstrating the Earth's magnetic field using a strong magnet and a rubber globe. The initial idea involves placing paperclips on the globe to visualize the magnetic field's direction, but participants suggest using compass needles for a more effective demonstration. A real compass is recommended for accurate results, and the strength of the magnet is crucial for the demonstration's success. Participants emphasize the need for a strong magnet, potentially sourced from the physics department.

PREREQUISITES
  • Understanding of Earth's magnetic field concepts
  • Familiarity with magnetic materials and their properties
  • Knowledge of using compasses in demonstrations
  • Basic physics principles related to magnetism
NEXT STEPS
  • Research the properties of strong magnets suitable for demonstrations
  • Learn how to effectively use compasses to demonstrate magnetic fields
  • Explore alternative methods for visualizing magnetic fields, such as iron filings
  • Investigate the Earth's magnetic field strength variations across different locations
USEFUL FOR

Students in physics, educators preparing demonstrations on magnetism, and anyone interested in practical applications of magnetic field concepts.

GTdan
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For physics, I had to write a report and show a demonstration on the magnetic field of the Earth. I already turned in the report and I have an idea about showing the field. I was thinking of sticking a strong magnet inside a rubber globe of the Earth and then putting paperclips on different parts of the globe. The magnetic field would cause the clips to point in a certain direction depending on where I place it. Does this sound like an ok demonstration? Is there a better way of showing the m-field of the Earth?
 
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I think this won't work; you would at least have to use compass needles to see the effect, but I guess it's nearly impossible to pin them onto a globe. But you could use a real compass which you would then place at different places (..."place at different places"? Excuse my small vocabulary :smile:) of the globe surface. BUT: I don't know how close to the magnet you would have to go with the compass, or how strong your magnet would have to be, I advise you to just try it!
 
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well, I need a REAL STRONG magnet. I haven't found any regular magnets that work so I will have to go looking around the physics dept in school to see if I can borrow one... ;)
 

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