Piezo Electric Activity of Rochelle Salt Under Various Conditions
The book Piezo Electric Activity of Rochelle Salt Under Various Conditions was written by author Joseph Valasek Here you can read free online of Piezo Electric Activity of Rochelle Salt Under Various Conditions book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Piezo Electric Activity of Rochelle Salt Under Various Conditions a good or bad book?
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This is probably connected with the variation of the dielectric constant with temperature which will be taken up presently. The charging throws of the crystal used as a condenser show variations similar to those of the activity except that they do not tend to zero but to a constant value at the lower temperatures. The crystals giving the second maximum on the piezo-electric curve show a similar peculiarity here. The crystals with the mercury electrodes give more regular curves. At 20 to 25 C. T...he crystals of both types begin to conduct, causing a steady drift of the galvanometer. Experiments seem to indicate that Ohm's law holds at least approximately. The conduction was at first thought to be electrolytic because of the manner in which Rochelle salt melts. Instead of real melting it appears that the crystal dissolves in its water of crystallization which is set free at 55 C. The desiccated crystal, however, decomposes into a tarry product and emits heavy white fumes above 150 C. , without melting.
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