Harry, right: vapour is a gas. As it is O2. IMHO the probe of Dr Galantini detects the liquid phase of h2o or other liquid conductor capacitor. It is not a chemical reactant that binds to any h2o molecule that comes around. Conductivity of gases is very low compared to liquids.
When you ask for tech specs of instruments used by people that know how to make good experiments search for the physical principles that is behind the measure not the range or the main field of application of an instrument. I bet Galantini knows how that probe works inside quite well. Il giorno 22/giu/2011 06:53, "Harry Veeder" <[email protected]> ha scritto: > from http://en.wikipedia.org/wiki/Relative_humidity > -------------- > A common misconception > Often the notion of air holding water vapor is presented to describe the concept > of relative humidity. This, however, is a misconception. Air is a mixture of > gases (nitrogen, oxygen, argon, water vapor, and other gases) and as such the > constituents of the mixture simply act as a transporter of water vapor but are > not a holder of it. > Humidity is wholly understood in terms of the physical properties of water and > thus is unrelated to the concept of air holding water.[3][4] In fact, an > air-less volume can contain water vapor and therefore the humidity of this > volume can be readily determined. > The misconception that air holds water is likely the result of the use of the > word saturation, which is often misused in descriptions of relative humidity. In > the present context the word saturation refers to the state of water vapor,[5] > not the solubility of one material in another. > -------------- > > > Reading this makes me think Galantini used the probe correctly. > > Harry >
