What factors are involved in measure relative humidity using a bubbler?

Question

I'm working on a research project where I have to define the physics behind creating relative humidity in the laboratory. I can't seem to find the mathematical relationships for using a bubbler to create water vapor or relative humidity.

Answer 1

Dear Vraz,
Is your reference to 'a bubbler' to that of determining absolute humidity by adsorption of the water vapour, and the RH% thereafter?

Answer 2

It is most commonly named a hygrometer. Traditionally it was made with horse hair that was connected to a cylinder. The higher the relative humidity, the longer the hair is.