Abstract
The capillary viscometer for gases of steady flow type reported here is a device of measuring the viscosities of gases in a steady state.
The measuring principle of the present viscometer is based on the previously developed Hagen-Poiseuille's law for gases. The viscosities can be obtained by a constant flowrate of a liquid and the pressure difference of both ends.
The outlet of the capillary tube is open to atmosphere. This simple trial viscometer enables us to measure the viscosities of gases easily.
Experimental results show that the obtained values are in good accordance with known reasonable values.
