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What Role Dose Infra-red Radiation Play in Physical Therapy? - Physics

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What role dose infra-red radiation play in physical therapy?

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Solution

The molecules of CO₂, NH₃ and water which are present in most materials absorb infrared waves. Due to this, the molecules heat and heat their surroundings. Hence, their thermal motion increases. Medical instruments, such as the infrared lamp which is used in physiotherapy, work on this principle.

Concept: Electromagnetic Spectrum
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