The results of Foote’s simple experiments were confirmed through hundreds of tests by scientists in the US and Europe. It happened more than a century ago.
However, the greenhouse effect is supposed to work by absorbing outgoing infrared, not sunlight which the experiment measured. The absorption of sunlight is not much compared to the absorption of outgoing infrared. Therefore I still believe the experiment is irrelevant to the greenhouse effect, while the part of my comment you quoted might be wrong.
Thanks for the criticism.
However, the greenhouse effect is supposed to work by absorbing outgoing infrared, not sunlight which the experiment measured. The absorption of sunlight is not much compared to the absorption of outgoing infrared. Therefore I still believe the experiment is irrelevant to the greenhouse effect, while the part of my comment you quoted might be wrong.