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Resources: Electric and Magnetic Fields
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PowerPoint Lecture Notes: Electric and Magnetic Fields

Pith ball demonstrations found on YouTube:

From the Kahn Academy - YouTube link
From Saint Mary's University - YouTube link

From Carlton College (?) - YouTube link

Use of magnetic induction to sort non-magnetic metals:

From the American Recycling Center:

(original link: https://www.youtube.com/channel/UCurq7PjCvPBx4zZ6v0i0wGw)