Electrical novelties : the ultra vacuum electrodes, X-ray tubes and stands, the multiple spark interrupter, spark lamp to produce violet rays, spark regulator for coil, electric heaters, X-ray plates (1903)
Swett & Lewis Company, Boston · Boston : Swett & Lewis Company · leaf 18
The cut gives a very good idea of this instrument. The box isnicely made of polished mahogany, mounted on four small rubberfeet, and is fitted with a pair of stout handles and a good lock. Theapparatus is designed to run from the alternating current and con-sumes but three amperes at 110 volts,…
Electric apparatus and appliances · X-rays · Electrical Equipment and Supplies
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-450-273.webp)
