Radio Waves
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Wavelength: 10^-1m to 10⁴m

Sources: Transmitters (using inductance and capacitance), sparks (eg, from brushes of unsuppressed motors).

Detection: Receivers containing inductance and capacitance which are set into resonance by the wave.

Uses: Medium range air-borne communication.

Comments: There are five main classes of radio waves, they are:

1. Ultra High Frequency (UHF) - 10^-1m to 10⁰m - TV, radar, airport control
2. Very High Frequency (VHF) - 10⁰m to 10¹m - FM radio
3. Short Wave Radio (Ultra High Frequency) - 10¹m to 10²m - Amateur radio, police, ambulances
4. Medium Wave Radio (Ultra High Frequency) - 10²m to 10³m - AM radio (national stations)
5. Long Wave Radio (Ultra High Frequency) - 10³m to 10⁴m - AM radio (international stations)

Other Notes in this Category

1. Gamma Rays
2. Infra-red Light
3. Introduction
4. Microwaves
5. Radiation: properties of different types of radiation
6. Radio Waves
7. Reflection, Refraction, Total internal Reflection
8. The electromagnetic spectrum
9. Ultraviolet Light
10. Visual Light
11. X-Rays

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