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This The Invisible Electromagnet: A Transparent Magnetic Field Viewer lab resource also includes:
Audio speakers, hard drives, credit cards, and even the earth use magnetic fields. While we observe the effect of magnetic fields, we can't actually see them. A viewer helps participants explore magnetic fields, some of the items that change the strength of a field, and other variables.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Discuss why we test for the magnetic field with iron filings rather than another metal
Classroom Considerations
- Requires the help of a machine shop to create some components
- Use caution when drilling through the acrylic, as it cracks easily
Pros
- Brings concepts from the textbook to life
- Once built, the device lasts for many years
Cons
- None