Hi. Recently in my physics class we attempted to create gas thermometers. here is a picture i drew on the setup of the thermometers: We calibrated them using already calibrated thermometers. I think i have a basic understanding of how it works. As the liquid and air inside the test tube are heated, the air pressure increases, forcing the liquid up the glass tube. Could someone please explain other factors that may affect how it works? And if possible, maybe give me a link that might further explain this type of thermometer. Thanks, Dan.