《Paragon X-Ray Pointers: A Complete Text-Book on Radiography with Paragon X-Ray Plates (Classic Reprint)》是一本圖書。
基本介紹
- 外文名：Paragon X-Ray Pointers: A Complete Text-Book on Radiography with Paragon X-Ray Plates (Classic Reprint)
- ISBN：9781332274284
內容簡介
Excerpt from Paragon X-Ray Pointers: A Complete Text-Book on Radiography With Paragon X-Ray Plates If an iron core has a coil of wire wound around it and a current of electricity is sent through the wire, the iron will be magnetized and the ends of the core will show a polarity according to the direction of the flow of current and the direction of the winding. If around this coi...(展開全部) Excerpt from Paragon X-Ray Pointers: A Complete Text-Book on Radiography With Paragon X-Ray Plates If an iron core has a coil of wire wound around it and a current of electricity is sent through the wire, the iron will be magnetized and the ends of the core will show a polarity according to the direction of the flow of current and the direction of the winding. If around this coil or magnet a second coil be wound, having no electrical contact with the first coil, it will be found that at the moment a current is sent through the first coil, another current is generated in the second coil. This secondary induced current is formed only the moment the current is started in the primary coil; it does not continue as long as the current flows in the primary coil - but, as soon as the current is broken in the primary, another current is caused to flow in the reverse direction in the secondary. This is more powerful than the current formed at the make. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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.
