Production Of Electromagnetic Waves

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Production Of Electromagnetic Waves
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• -the electric and magnetic fields at any point
  are perpendicular to each other and to direction
  of motion
• fields alternate in direction from point to
  point
• the electric and magnetic fields are in phase.

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EM waves are produced by accelerating electric
charges.
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Speed of EM Waves
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Electromagnetic Spectrum
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Example

• Calculate the wavelength
• Of a 60-Hz EM wave
• Of a 93.3 MHz FM radio wave
• Of a beam of visible red light from a laser at
  frequency 4.74x1014 Hz.