Discussion on “the measurements of rotary speed of dynamo machines by the stroboscopic fork.” Atlantic city, N. J., June 29, 1908

J. B. Taylor: The stroboscopic disc illuminated by an alternating-current arc or incandescent lamp has been used for a number of years to determine the speed of induction motors, synchronous machinery, and of other pieces of apparatus. This method of obtaining intermittent illumination is much simpler than by means of the fork described in this paper, and for some purposes gives the desired information with greater accuracy.