Wrinkles in Electric Lighting
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Wrinkles in Electric Lighting - Vincent Stephen
Project Gutenberg's Wrinkles in Electric Lighting, by Vincent Stephen
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Title: Wrinkles in Electric Lighting
Author: Vincent Stephen
Release Date: January 20, 2011 [EBook #35015]
Language: English
*** START OF THIS PROJECT GUTENBERG EBOOK WRINKLES IN ELECTRIC LIGHTING ***
Produced by Chris Curnow, Harry Lamé and the Online
Distributed Proofreading Team at http://www.pgdp.net (This
file was produced from images generously made available
by The Internet Archive)
WRINKLES
IN
ELECTRIC LIGHTING.
WRINKLES
IN
ELECTRIC LIGHTING.
BY
VINCENT STEPHEN.
E. & F. N. SPON, 125, STRAND, LONDON.
NEW YORK: 12, CORTLANDT STREET.
1888.
INTRODUCTION.
In the following pages it is my intention to give engineers on board ship, who may be put in charge of electric lighting machinery without having any electrical knowledge, some idea of the manner in which electricity is produced by mechanical means; how it is converted into light; what precautions must be used to keep the plant in order, and what to do in the event of difficulties arising. I do not therefore aim at producing a literary work, but shall try and explain everything in the plainest language possible.
CONTENTS.
WRINKLES
IN
ELECTRIC LIGHTING.
The Electric Current, and its Production by Chemical Means.
Production of electric current in chemical battery. It will first be necessary to explain how electric currents are produced by means of chemicals. In a jar A, Fig. 1 , are placed two plates B and C, one zinc, and the other copper, each having connected to it at the top a copper wire of any convenient length. The plates are kept in position by means of pieces of wood, and the jar is about half filled with a solution of salt and water, or sulphuric acid and water; if then the two wires are joined, a current of electricity at once flows through them, however long they may be. Current very weak. The current produced in this manner is very weak, and does not even keep what strength it has for any length of time, but rapidly gets weaker until quite imperceptible. The current is, however, continuous; that is, it flows steadily in the one direction through the wire, and may be used for ringing bells, or for other purposes where a feeble current only is required to do intermittent work. The wire E in connection with the copper plate is called the positive lead, and the other the negative, and the current is said to flow from the copper plate, through the wire E through the circuit to D, and thence to the zinc plate, and through the liquid to the copper plate. Current compared to circulation of the blood. The current has often been compared to water flowing through a pipe, but I think it can be better compared to the blood in the human body, which through the action of the heart is continually forced through the arteries and veins in one steady stream. There is, however, this difference, that there is no actual progression of matter in the electric current, it being like a ripple on water, which moves from end to end of