Handy man's workshop and laboratory . Fig. 195—An unbreakable Leydenjar HANDY MANS WORKSHOP AND LABORATORY 231 a puncture of the glass. It very much enlarges ones choice ofbottles, as one is not obliged to sacrifice a flask of good dielectricproperties because it has too narrow a mouth for convenientmanipulation of the tinfoil. The suggestion may have otherapplications; for instance, a pair of thin glass test tubes, silveredin this way, serve very well in the construction of Regnaultshygrometer. The easiest way to get proper silvering solution is to go downto the mirror makers with the flasks
Handy man's workshop and laboratory . Fig. 195—An unbreakable Leydenjar HANDY MANS WORKSHOP AND LABORATORY 231 a puncture of the glass. It very much enlarges ones choice ofbottles, as one is not obliged to sacrifice a flask of good dielectricproperties because it has too narrow a mouth for convenientmanipulation of the tinfoil. The suggestion may have otherapplications; for instance, a pair of thin glass test tubes, silveredin this way, serve very well in the construction of Regnaultshygrometer. The easiest way to get proper silvering solution is to go downto the mirror makers with the flasks that need the coating. Thesolution can be purchased for a trifle. The following formulawill do very well. A. Rochelle salt 10 grammes in I liter ofwater. B. Silver nitrate 5 grammes dissolved in a little 3 grammes of strong ammonia gradually, so that the pre-cipitate at first formed is dissolved. Add water enough to make1 liter. Mix equal parts of A and B. The glass ought to beperfectly clean and at a temperature of 25 de
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
