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Electromagnetic waves - Coggle Diagram
Electromagnetic waves
Common properties
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The equation v = λf is used to find the speed of electromagnetic waves where v is the wave speed, f is the frequency of the wave and λ is the wavelength of the wave
When electromagnetic waves travels from one medium to another its speed and wavelength changes, while its frequency remains the same
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Electromagnetic spectrum
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Infrared radiation
Used in ear thermometers, remote controllers and intruder alarms
Radio waves
Used in radio, over the air television and communications
Microwaves
Used in microwave ovens, satellite TV and global positioning system
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X-rays
Used in radiation therapy, X ray imaging and at airport security screening
Effects
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Ionising radiation causing damage to biological molecules which leads to abnormal cell division which results in cancer