Electric Arc Lamps

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Excerpt from Electric Arc Lamps: Thesis for the Degree of Bachelor of Science in Electrical EngineeringIn the year 1801 Sir Humphrey Davy, then a young man of 22, told in a lecture before the Royal Institution of a spark of vivid whiteness passing between two pieces of well burned cara bon. The spark coonrad when the carbon rods were touched to gether and then separated while connected to the opposite poles of a galvanic battery. His source of energy was a battery of 250 pairs of copper and zinc plates placed in an electrolyte con sisting of a solution of alum with a few drops of nitric acid added.g Hence it is evident that simply a spark and not a continuous dis I charge resulted. In fact it was not until seven years later, in 1808 that the first true arc was produced. A huge galvanic bat tary of 2000 cells had been placed in the laboratory of the Royal Institution. With this source of power at his disposal, Davy pro u.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.