I wanted to study how much carbon dioxide is needed to produce a maximum warming effect in a greenhouse. So, I have build some mini-greenhouses, whose CO2 content were varied and temperatures measured. Dia 1.
Tools for adding the carbon dioxide Dia 2.
Mini-greenhouses were directed to sun with my solar tracking sundial. Dia 3.
Results of my experiment are available here. I hope that somebody, who lives in a place with more sunshine, will continue the experiment.