Walsh, David · London : Baillière, Tindall and Cox · leaf 41
to impinge onthe top of the spring B, so causing a separation of the platinumpoints, F. The advantages claimed for this system are that aprolonged contact is afforded, giving time for the thoroughmagnetic saturation of the core ; that in consequence much lessbattery power is required than with… … Fig. 13.—Electeo-Magnetic Beeak. Some of the best Eontgen ray workers keep to the top contactspring break, and produce excellent results therewith. On theother hand, many prefer a mercury break, or a mechanical formdriven by a motor. With a rapid mercurial break there canbe little doubt that a more…
X-rays · Radiography
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