sdeveloped. A sudden break of current then gives the maximumeffect of which the coil is capable. When one is working with atightened tension-spring the apparatus must be watched while atwork, as the platinum points of the vibrator sometimes sticktogether, and the rush of current which would follow… … Fig. 18.—Veil Contact-Breaker (Watson and Son). sparking, and their surfaces become uneven, and need to be filedfrom time to time to keep the surfaces flat, smooth, and clean.New platinum points can be fitted when the old ones are wornaway. The face of the iron hammer should be kept close to the…
X-rays · Radiography
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-128-41.webp)
