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This column helps teachers build an understanding of physical principles. This issue covers electromagnetic waves.
Paul Hewitt does it again. He takes a complicated phenomena in physics and explains it in such a way that my high school students can understand. I love how he incorporates a short history of the discovery of electromagnetic waves. My physics students like his drawings because they help them grasp a very abstract concept.
Ruth Lehmann Hutson (Westmoreland, KS)
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