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Elementary electricity up-to-date; (1909)

Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 61

An illustration from Elementary electricity up-to-date;, 1909, leaf 61
trical amalgam ? Answer. One ounce of tin and one ounce of zinc are 62 ELEMENTARY ELECTRICITY melted together and while melted four ounces of mercuryare stirred in. When cool the mass is powdered andsifted. It may be sprinkled on the rubber from a saltshaker. Question 4. Why is this amalgam used?… … F g. 20. Electrical Winds. Question 5. Is the use of this amalgam necessary? Answer. No. Powdered graphite will work very well.Simply rub it into the leather of the cushion. Of courseomit the tallowing. Question 6. What is an electrical wind? Answer. It has been found that electricity leaks…

Electricity

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