High frequency apparatus, design, construction and practical application; a practical treatise for electrical engineers, electricans, physicians, students and experimenters (1920)
Curtis, Thomas Stanley · New York, Norman W. Henley publishing company · leaf 71
ng substance is applied to the wire subsequently. Secondary Insulation.—One fact stands out promi-nently after the worker has built and experimented with afew coils. No solid insulation of any kind is of the slight-est avail when working with high frequencies and very highpotentials; glass, hard…
Electric apparatus and appliances
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