United States. Surgeon-General's Office, American Roentgen Ray Society · New York : Middleditch · leaf 58
beeninvented and have some advantages for use with heavycoils. They allow variation in two essential particulars,viz., number of interruptions per second and relativeduration of make and break. Two forms are in commonuse. In the jet type, Fig. 21, a centrifugal pump throwssmall streams of mercury… … Fig. 21. Centrifugal jet mercury interrupter.
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