Christophe wrote:An idea that I have had in mind for years but that I have never put into practice and that could be really interesting ... for everyone!
Why not make a small simulator of global warming in a closed vase? DIY accessible to all!
The idea is simple: have 2 identical containers exposed to the same source of radiation and which would simulate the Earth's atmosphere.
I think of Ladies Jeanne for example.
you can forget, the problem of the greenhouse effect is linked
* on the one hand to the total opacity of the atmosphere which "integrates" the CO concentration2 over the entire thickness of the atmosphere, not just 20 cm (20 cm of CO2 are NOT infrared opaque)
* else by the effect of the adiabatic gradient of the atmosphere which causes the temperature to decrease with altitude, which is an essential phenomenon to explain why the soil warms up. You will have absolutely nothing like that with your demijohn. The main part of the heating will be due to the fact that the glass blocks the exchange by convection with the ambient environment, but the result will be the same whatever you put in it.