Radio Waves

Matthew Davey Per.2

Wavelength Range

They range from the length of a football to larger than our planet.

Frequencey Length

Bands of radio waves


Band


Frequency range


Wavelength range


Low Frequency (LF)

30 to 300 kHz

1 m to 10 km

Medium Frequency (MF)

300 kHz to 3 MHz

100 m to 1 km

High Frequency (HF)

3 to 30 MHz

10 to 100 m

Very High Frequency (VHF)

30 to 300 MHz

1 to 10 m

Velocity In A Vacuum

Other Key Facts

  • Radio waves were first predicted by mathematical work done in 1867 by Scottish mathematical physicist James Clerk Maxwell


  • His mathematical theory, now called "Maxwells Equation".
  • Radio waves were first used for communication in the mid 1890s by Guglielmo Marconi, who developed the first practical radio transmitters and receiver's
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Everday Use For Radio Waves

  1. Mobile Radio Communication
  2. Broadcasting
  3. Radar
  4. Computer Networks

Health Impact

Positive



Negative

Some claims suggest cell phone RFs may instigate brain tumors and even cancer