Giancoli's Physics: Principles with Applications, 7th Edition
22
Electromagnetic Waves
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22-1: B Produced by Changing E
22-2: EM Waves
22-3: Electromagnetic Spectrum
22-4: Measuring the Speed of Light
22-5: Energy in EM Wave
# An EM wave has frequency $7.14 \times 10^{14} \textrm{ Hz}$. What is its wavelength, and how would we classify it?
$420 \textrm{ nm. This is visible violet light}$