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Electromagnetic Waves

Quote of the Day

Review of Maxwell's Equations

Derivation of Wave Equation

The "bottom line" of today's class is that time-varying electromagnetic waves propagate in empty space at the speed of light. Maxwell's equations suggest that light is an electromagnetic wave.

Phase speed of electromagnetic wave in free space:

[phase speed]

Chart of the Electromagnetic Spectrum plus visible spectrum

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Comments, suggestions, or requests to ghw@udel.edu.

Last updated Dec. 14, 1997.
Copyright George Watson, Univ. of Delaware, 1997.