Question
Write a note on radiation.
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Answer
- Radiation is the third form of heat transfer.
- By conduction, heat is transferred through solids, by convection heat is transferred through liquids and gases, but by radiation heat can be transferred through empty space even through vacuum.
- Heat energy from the Sun reaches the Earth by this form of heat transfer.
- Radiation is defined as the way of heat transfer from one place to another in the form of electromagnetic waves.
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