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Waves

Electromagnetic Waves - X-rays.

Electromagnetic waves with a wavelength shorter than ultraviolet light
are called X-rays (not X waves).

X-rays can pass easily through flesh but not through bone.
X-ray photographs are used to show the image of bones
against a black background.
These photographs can show if bones are broken or damaged.

X-ray diffraction can give information
about the arrangement of atoms in materials.

Low intensity X-rays can damage living cells and cause cancer.
People who work with X-rays
take measures to protect themselves from exposure.
They wear a film badge and stand behind special screens
when the X-ray machine is switched on.

High intensity X-rays will kill living cells.

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Copyright © 2007 Dr. Colin France. All Rights Reserved.