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The Electromagnetic Spectrum:
Electromagnetic waves are electric and magnetic disturbances that transfer energy from one place to
another.

Gamma rays
Xrays
Ultraviolet
Visible Light
Infrared
Microwaves
Radio Waves

Wavelength:
The wavelength is the distance form one wave peak to the next wave peak
along the waves
Radio waves have the…

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When the xray tube is switched on, xrays pass through the patient's body. They leave a shadow
image on the film showing the bones.
When the film is developed, the parts exposed to xrays are lighter than the surrounding tissue so the
bones appear lighter.
Too much exposure xrays can…

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