This manual covers foundational scientific research concerning the effects of magnetic fields on radiation, drawing from seminal memoirs by Faraday, Kerr, and Zeeman. It delves into early investigations into the relationships between natural forces, specifically exploring the potential connections between light and magnetism. The text details experimental efforts and scientific discourse from the early 19th century, illustrating the challenges and methodologies employed by physicists in understanding these fundamental phenomena.
The purpose of this compilation is to present historical scientific inquiry for educational and reference use. It includes discussions on experimental verification, the evolution of scientific understanding, and the meticulous processes undertaken by researchers. This volume serves as a resource for those interested in the history of physics, electromagnetism, and the scientific method, providing insights into the development of key concepts through primary accounts.
In the early part of this century possible relationships between the various "forces of nature" began to attract the attention of physicists. In 1800 William Herschel discovered that a "heat spectrum" is superimposed on and extends beyond the visible solar spectrum, indicating some relationship between heat and light. This seems to have suggested to Domenico Morichini, of Rome, the search for a relationship between light and magnetism. In 1812 he claimed that he had been able to magnetize steel needles by exposing them to the violet radiation in the solar spectrum. Others, including Mrs. Somerville, in England, believed that they had verified his results, but many were unable to reproduce them, and it was finally demonstrated that all these effects had been due to other causes. The dispute over this question extended over many years, and is an instructive illustration of the difficulty which even skilled experimenters may have in solving a comparatively simple experimental problem. About 1825 Sir John Herschel sent a polarized beam of light along the axis of a helix carrying an electric current. Examination with an analyzer showed no effect. He also intended to test the effect of a polarized beam passing tangentially by a conductor carrying a current, but never executed the experiment. No other attempt to show a relationship between light and magnetism seems to have been made until Faraday undertook the investigation described in the following pages
Author: Lewis, E. P.
Publisher: Lewis Press
Illustration: n
Language: ENG
Title: The Effects Of A Magnetic Field On Radiation -Memoirs By Faraday Kerr And Zeeman
Pages: 00132 (Encrypted EPUB)
On Sale: 2013-04-16
SKU-13/ISBN: 9781406765052
Category: Science : General
In the early part of this century possible relationships between the various "forces of nature" began to attract the attention of physicists. In 1800 William Herschel discovered that a "heat spectrum" is superimposed on and extends beyond the visible solar spectrum, indicating some relationship between heat and light. This seems to have suggested to Domenico Morichini, of Rome, the search for a relationship between light and magnetism. In 1812 he claimed that he had been able to magnetize steel needles by exposing them to the violet radiation in the solar spectrum. Others, including Mrs. Somerville, in England, believed that they had verified his results, but many were unable to reproduce them, and it was finally demonstrated that all these effects had been due to other causes. The dispute over this question extended over many years, and is an instructive illustration of the difficulty which even skilled experimenters may have in solving a comparatively simple experimental problem. About 1825 Sir John Herschel sent a polarized beam of light along the axis of a helix carrying an electric current. Examination with an analyzer showed no effect. He also intended to test the effect of a polarized beam passing tangentially by a conductor carrying a current, but never executed the experiment. No other attempt to show a relationship between light and magnetism seems to have been made until Faraday undertook the investigation described in the following pages
Author: Lewis, E. P.
Publisher: Lewis Press
Illustration: n
Language: ENG
Title: The Effects Of A Magnetic Field On Radiation -Memoirs By Faraday Kerr And Zeeman
Pages: 00132 (Encrypted EPUB)
On Sale: 2013-04-16
SKU-13/ISBN: 9781406765052
Category: Science : General
