RFID

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RFID

• The EM Spectrum

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Electromagnetic waves

• formed when an electric field (the blue arrows)
  couples with a magnetic field (the red arrows)
• magnetic and electric fields of an
  electromagnetic wave are perpendicular to each
  other and to the direction of the wave.

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Properties of EM Waves

• Wavelength - m
• Frequency - Hz
• Energy - eV

Freq cycles per second
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Properties of the EM Spectrum

• Typical Units Vary with the Spectrum

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Observing the EM Spectrum?
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