The Earth and Its Mechanism: Being an Account of the Various Proofs of the Rotation of the Earth. with a Description of the Instruments Used in the Experimental Demonstration; To Which Is Added the Theory of Foucault's Pendulum and Gyroscope
The Earth and Its Mechanism: Being an Account of the Various Proofs of the Rotation of the Earth. with a Description of the Instruments Used in the Experimental Demonstration; To Which Is Added the Theory of Foucault's Pendulum and Gyroscope
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1862 edition. Excerpt: ...two horizontal screws, the points of which were accurately ground and capable of coming together; one end of the loop destined to hold the pendulum was then compressed between them, the pendulum was then raised till the pointer could be looped in; after a short interval, to allow the instrument to ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1862 edition. Excerpt: ...two horizontal screws, the points of which were accurately ground and capable of coming together; one end of the loop destined to hold the pendulum was then compressed between them, the pendulum was then raised till the pointer could be looped in; after a short interval, to allow the instrument to become quiescent, a turn of one of these fine-threaded screws set the pendulum free instantaneously, while the loop fell to the ground (see fig. 21). The following is a short account of the apparatus used, and the experiments I made, in the Hall of King's College, London, in the year 1859: --The bob was a truly-turned ball of brass, weighing 401bs., the suspending medium was a thick steel wire, the length of the pendulum was 17 feet 9 inches. The amplitude of the first oscillation, as measured by its tangent, amounted to 6 42' 22," and during the time of the experiment, which was about half an hour, the arcs were not much diminished. As I had to demonstrate to a large number of spectators I encountered considerable difficulty in rendering the small deviations of the plane of oscillation visible to all. I accompbshed this in the three following ways: --1st. I placed on the first two lines of division (counting from the meridian in which the pendulum commenced its swing) two small wooden cones, so that the diameters of their bases coincided with the line that marked the degree; their weight was regulated so that when the plane of oscillation deviated sufficiently to pass through the points of their azimuth, they were struck by the pointer and knocked down. By this means everyone present was enabled to observe the time taken for each degree of deviation. 2nd. At the fourth degree from the meridian line I placed a small cannon loaded with gun...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
All Editions of The Earth and Its Mechanism: Being an Account of the Various Proofs of the Rotation of the Earth. with a Description of the Instruments Used in the Experimental Demonstration; To Which Is Added the Theory of Foucault's Pendulum and Gyroscope
