Wednesday, November 7, 2007
X-Rays
X-rays are electromagnetic waves with wavelengths ranging from about 10-8 m (10 nm) down to 10-13 m (10-4 nm).
X-rays are used as a diagnostic tool in medicine and dentistry.
If you have experienced traveling by air, you would have noticed that your luggage are inspected by the security officer present using x-rays.
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