Electricity and Magnetism; Theory of Direct-Current Generators and Motors; Direct-Current Generators; Direct-Current Motors; Resistance Measurements; ... Currents; Alternators; Transformers; Etc - Softcover

Inhaltsangabe

Excerpt from Electricity and Magnetism; Theory of Direct-Current Generators and Motors; Direct-Current Generators; Direct-Current Motors; Resistance Measurements; Direct-Current Measuring Instruments; Alternating Currents; Alternators; Transformers; Etc

If an iron rod is grasped in one hand and a wooden rod of the same length in the other, and the free ends of these rods are held in a fire, the iron rod will become too hot to hold comfort ably before the wooden rod has warmed. This is because iron conducts heat better than does wood. So it is with diflerent substances in respect to electricity; some conduct it better than others.

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