| 摘要 |
<p>A device for measuring the surface pressure of a film 2 formed at the interface of a liquid and gaseous phase, is claimed. The device comprises a detector means and a sensor means. The detector means comprises a light source 9 and a position-sensitive detector 8, the active surface of which is situated in the light beam of light source 9, and the sensor means comprises a sensor 3 which can be brought into contact with the film to be measured, and a shading means 7 which, in correspondence with the force applied to the sensor by film 2, moves in the light beam between the active surface of the detector and the light source.</p> |
