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Electromagnetic waves - Coggle Diagram
Electromagnetic waves
They are waves of electric and magnetic energy
Visible light is one form of EM radiation and the other types of EM wave share many of the properties of light: they can be reflected, diffracted and refracted
All waves have alternating crests and troughs
The distance from mid-point to crest is called the amplitude and the distance from crest to crest is called wavelength
The number of waves produced per second is called the frequency
The wavelenghth and frequency of EM waves are important in determining
their visibility
their penetration
their heating effect
other characteristics
The electromagnetic spectrum
It is formed from Em radiation from waves of
extremely high frequency and short wavelength, at one end
extremely low frequency and long wavelength, at the other end
It consists of
visible light
infrared radiation
X-rays
ultraviolet radiation
micro waves
radio waves
gamma rays