[plenipotentiary]

Hi Andy. I think you misunderstood. A glass sheet well above both containers stops IR coming in. One container has glass directly over it so no IR can escape. The other has rock salt cover so IR can escape.

The container with the trapped IR does not warm compared to the rock salt covered one.

Therefore IR emitted from earths surface does not effect temperature whether trapped by CO2 (or glass)or not.

That means AGW theory is wrong.

[AndyJackson]

You are correct that I did not understand the physical description of the experiment. Even so, the interpretation of the results are bunkum and the article claiming the effect does not exist is even worse.

Look. No serious physicist questions whether "greenhouse gases" trap radiation and contribute to the warming of the earth. This would be a very cold and forbidding planet without them. The debate is not over that but rather it is over whether human generated CO2 is affecting climate. That is a much different question. You cannot start the debate by tossing well established physics out the window, as it were.