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Electromagnetic rays - Coggle Diagram
Electromagnetic rays
Ultravoilet radiations
Uses
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for detecting the purity of gems, eggs, ghee etc.
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Detection
When silver-chloride solution is exposed to electromagnetic waves starting from the red to the violet end and then beyond it, the solution first turns violet. Violet rays are chemically more active than the visible light. These radiations are called ultraviolet radiations (or actinic rays).
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The spectrum of ultraviolet radiations is obtained by passing the radiations through a quartz prism in place of a glass prism because glass absorbs these radiations.
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Properties
Ultraviolet radiations can pass through quartz, but they are absorbed by glass. Therefore, to obtain the ultraviolet spectrum from its source, a quartz prism is used instead of a glass prism. For the same reason ultraviolet bulbs have an envelope made of quartz instead of glass.
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X-rays
Properties
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Like gamma rays, they cause flouroscence on certain materials
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Uses
Used for detection of fracture in bones, teeth, etc [Radiography]
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