[PDF] New Theory Of Terrestrial Magn eBook

Author : Samuel L. Metcalf
Publisher : Forgotten Books
Page : 162 pages
File Size : 49,36 MB
Release : 2017-12-19
Category : Science
ISBN : 9780484172790

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Excerpt from New Theory of Terrestrial Magnetism: Read Before the New-York Lyceum of Natural History We cannot assign limits to the scape of the hu man mind in discovering the causes and relations of things, when fully exerting its native freedom, unfettered by the trammels of prejudice and the routine of authority. It is by many persons con sidered presumptuous and disrespectful to question the Opinions of men, whose discoveries in science have placed them high on the rolls of fame above their contemporaries. Such 'a spirit is detrimental to the progress of true knowledge. There should be no standards of infallibility in science, but de monstrated truths. 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.

Author : Vincent Wilmot
Publisher : Lulu.com
Page : 276 pages
File Size : 16,35 MB
Release : 2015-07-22
Category : Science
ISBN : 1329398254

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The first book is basically the New-Science-Theory.com site as on 1 January 2018, for changes since then visit the website with its Sitemap noting updates. It is especially good for those interested in physics theory, concentrating chiefly on the four great physicists William Gilbert, Rene Descartes, Isaac Newton and Albert Einstein - and also having fine sections on Galileo, Kepler, History of Science, Gravity, Light, String Theory, Standard Model Physics, Probability Science, Philosophy of Science and General Image Theory Science. The second book is a new improved English translation of William Gilbert's banned Latin 1600 'De Magnete' or 'On The Magnet'. This is rather easier to read than its two earlier translations, and significantly helps to clarify Gilbert's 'attraction' physics which Newton put as one of the two mathematized physics options and which he is believed to have privately favoured. It is basically a novel signal-response or remote-control physics that may still have relevance.

Author : Dennis Brooks
Publisher : Speedy Publishing LLC
Page : 55 pages
File Size : 31,68 MB
Release : 2015-03-04
Category : Science
ISBN : 168127485X

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The Old Theory Until now, there was only one theory regarding the source of Earth's magnetic field, which is the internal dynamo theory. This theory was accepted because it offered the best explanation at the time. Also, much research has been done to support the theory. According to the internal dynamo theory, a dynamo near the center of the planet generates the current that produces the magnetic field. This dynamo would be in the liquid outer core of the planet. It would produce the magnetic axis and project it from the planet. The axis would expand and spread the magnetic field around the planet. This theory also suggests that the internal dynamo is sustaining itself by using fuel from Earth's core. The internal dynamo theory has changed over the years. At first scientists thought that a bar magnet was in the center of the planet and the compass needle pointed to the poles of that magnet. This made perfect sense at the time because we can see that the same thing happens when we put a compass near a bar magnet. The Bar Magnet In The Sun image demonstrates the idea of the bar magnet theory. However, this example shows the bar magnet imbedded within the sun because just like the planets, the sun also has a magnetic field, which is more complex than Earth's magnetic field. Scientists have tried to use the internal dynamo theory to explain the magnetic fields of all the planets, some moons, and the sun. However, the old model does not work for the sun, moon, and other planets. The bar magnet concept lasted a long time as the main theory regarding the source of Earth's magnetic field. However, while trying to apply it to other cases, scientists found problems with the theory. Over the years, they discovered that a bar magnet could not hold magnetism above the temperature of 770 degrees centigrade because high heat destroys magnetism. This caused the theory to gradually evolve over time.