## June, I954.] CURRENT TOPICS 531 of the German material were obtained and analyzed in this country. Through cooperation with American industry, the Navy was successful in duplicating and improving on the expanded polyvinyl chloride.
Colored photographs
- Book ID
- 103089772
- Publisher
- Elsevier Science
- Year
- 1879
- Tongue
- English
- Weight
- 64 KB
- Volume
- 107
- Category
- Article
- ISSN
- 0016-0032
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โฆ Synopsis
Acoustic Figures.--M. C. Decharme concludes his paper upon the acoustic vibrations of liquids by showing their correspondence with those of the Chladni plates. By experimenting upon circular plates alternately with sand and with water, he finds that the diametral, the concentric, and the compound systems are all equally Well represented. The position, extent, and form of the different systems of peripheral internodes and the eccentric networks of different orders can be determined numerically beforehand for a plate of given dimensions.----Comptes Rendu.~.
C.
๐ SIMILAR VOLUMES
anmlonium phosphate precipitate one is able to do away with the tedious operations incidental to the work with filter paper and to gain about a half-hour's time for each analysis. 4. The work with the pul t ) filter gives as accurate results for calcium and magnesium as the work with standard filte