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__Microwave Meals__
When microwave radiation is absorbed by water the water heats up.
 * Have you ever wondered how a microwave oven works?**

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__Cooking with infared[[image:Turkey_cooking_c.gif width="149" height="129" align="right"]]__
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**__Key words__**

 * **Diffraction**- Spreading out of waves as they pass through a gap
 * **Frequency**- A number of oscillations of a wave in one second
 * **Microwave**- Region of the electromagnet spectrum which lies between infared and radio waves