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How are sound waves and electromagnetic waves different?

How are sound waves and electromagnetic waves different?
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How are sound waves and electromagnetic waves different?

User Kevingreen
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EM waves propagate through a vacuum: sound waves require a medium. EM waves are transverse vibrations: sound waves are longitudinal vibrations. EM waves are fluctuating electric and magnetic fields: sound is fluctuating pressure.
User Adetunji
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