Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 119
ntact. Thesewashers are very important, and should not be omitted. 104 EASY ELECTRICAL EXPERIMENTS.CHAPTER XXXI. HOW TO MAKE A RHEOSTAT. PART TWO. Having completed the wooden framework of the rheostat,we will next turn our attention to the coils of wire which areto make up the necessary resistance.… … Fig. 2. Cut off the wire, leaving 3 inches projecting from each end.Remove the coil from the iron rod, and there will be founda spiral of wire, about */2 inch in diameter and 5 inches long.Make 32 such coils. The wire should be very soft, with a verylittle tendency to spring after being bent. If…
Electric apparatus and appliances · Electricity
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