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Tandem78
#3
Dec21-10, 04:51 AM
P: 17
Quote Quote by berkeman View Post
What is the context of the question? What do you know about the transmissivity and reflectance of "transparent" layers?

http://en.wikipedia.org/wiki/Reflectivity

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The context is a dispute as to whether the temperature gradient of an atmosphere is the inevitable consequence of the increasing pressure with depth, or whether a source of energy is required.