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Discussion Response Post to: radiation

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Ashwin Menon (29)

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Glass has a peculiar property - it allows infra red rays of shorter wavelengths (high temperature) to pass through it, but does not allow infra-red radiation of longer wavelengths (low temperature) to pass through it. Greenhouses use this in cold areas to conserve heat.
When an object is heated up by the shorter wavelength infra red rays(high temperature), it becomes hot and emits longer wavelength infra red rays (not as high temperature). Glass doesn't allow this to pass through and these radiations accumulated over time increase the temperature in the greenhouse.

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