| Autor: |
Hunter, Joseph L., Markowski, Michael J., Klopovic, Joseph J., Bruening, Leonard F. |
| Zdroj: |
Journal of the Acoustical Society of America; 1957, Vol. 29 Issue 11, p1261-1261, 1p |
| Abstrakt: |
An interferometer has been constructed for the measurement of velocity and absorption in liquids. The design includes features for achieving and maintaining close parallelism between emitter face and reflector face over a large range of movement of the reflector. The reflector distance may be changed either manually or automatically. If driven automatically, the drive is taken from the gear box of a Bruel and Kjaer graphic level recorder through a flexible shaft and a reducing gear, so that the motion of the reflector is synchronized with the motion of the recorder paper. A precision gauge with a full range of six inches is firmly attached to the reflector shaft for a check on the travel of the reflector. If greater precision of distance measurements is required, provision is made for the insertion of gauge blocks. For extremely minute motions a differential drive may be inserted. The instrument is constructed in subassemblies, so as to be adaptable over a wide range of absorption coefficients. Convenience features include a self-contained temperature bath and accessibility of the crystal holder for ease of change of emitters. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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