Our first attempt didn't work. I think the problem was a combination of the water not being warm enough and a gap where the rim of the glass and the bottom of the bowl met.
|First try. No cloud, just some condensation on the bottom of the bowl.|
So we tried again. This time we heated the water more and put it in a different cup, one that we hoped wouldn't have a gap. We heated the water too much because the water was steaming even before putting the cold dish on top. The glass immediately fogged up with condensation and we couldn't see whether a cloud was forming inside or not. Steam escaped through the gap again.
|Second try. The water was so hot that it immediately fogged up the glass.|
|Third try. We definitely saw condensation, but no cloud.|