Essay
Essay unit 2- Energy and our Universe
- Institution
- PEARSON (PEARSON)
ionising and non ionising Frequency Wavelength Uses Dangers of all the below Radio Microwave InfraRed Visible Ultraviolet X-Ray Gamma Ray
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All EM waves are transverse Can travel through a vFrequency: 3x1012 to 3x109 Hz Frequency: 3x1017 to 8x1014 Hz
Wavelength: 0.001m to 1m Wavelength: 10-9m to 370nm
Uses: Telecommunication, radar, Uses: Tanning, discos,
cooking. pollination, counterfeit
Dangers: Can cause burns or detection.
cataracts Dangers: Can cause skin cancer
Frequency: 3x109 to 3x104 Hz
Wavelength: 1m to 100000m
Uses: To transfer information/
Communication. E.g. TV
Dangers: None Non-Ionising Ionising
Radio Microwave InfraRed Visible Ultraviolet X-R
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