Excerpt from On Some New Forms of Work-Measuring Machines as Applied to Dynamos and Electro-Motors This method has since given way to either of the two following plans, if the spaces between the cogs are filled up with a non-conductor, and turned off so as to be smooth, then a telephone and battery placed in circuit with the two wheels and springs on the motor and speed indicator tells one very accurately when the same note is produced by both motor and speed indicator. It will be found most convenient to use a telephone ...
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Excerpt from On Some New Forms of Work-Measuring Machines as Applied to Dynamos and Electro-Motors This method has since given way to either of the two following plans, if the spaces between the cogs are filled up with a non-conductor, and turned off so as to be smooth, then a telephone and battery placed in circuit with the two wheels and springs on the motor and speed indicator tells one very accurately when the same note is produced by both motor and speed indicator. It will be found most convenient to use a telephone wound with two distinct circuits, one being in connection with the spring and wheel of the motor, the other in connec tion with the spring and wheel on the speed indicator. An attempt was made to affect the telephone by a current induced by that which was driving the motor, but experience showed that the former of these methods was the best. This way of measuring the revolutions, not only of electro motors, but anything which 18 easily stopped by friction, might be introduced in many instances in the physical laboratory. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
