A History of Physics in Its Elementary Branches, Including the Evolution of Physical Laboratories
The book A History of Physics in Its Elementary Branches, Including the Evolution of Physical Laboratories was written by author Florian Cajori Here you can read free online of A History of Physics in Its Elementary Branches, Including the Evolution of Physical Laboratories book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A History of Physics in Its Elementary Branches, Including the Evolution of Physical Laboratories a good or bad book?
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EticKEK, "Recent Researches in Terrestrial Magnetism," Nature, Vol. 57, 1897, pp. 160 et seq. ' Consult the "Abstract of a Report on Solar and Terrestrial Magnet- ism " by Prank H. Bigblow, Bulletin No. 21, TI. S. Department of Agriculture, 1898. 262 A HISTORY OF PHYSICS The advantage to be gained is this : If all practical units are derived from these three, then all results of measurement are comparable with each other. Gauss took as the unit of force that which gives to unit mass in unit tim...e a unit velocity. As the unit of magnetic intensity he chose that quantity which, acting upon an equal quantity at unit distance, exerts unit force. Gauss's use of absolute units in the measurement of terrestrial magnetism led his colleague at Gottingen, Wilhelm Weber, to introduce absolute units in electricity. His first papers on the subject were published in 1846, 1852, 1856. As practical units of resistance, Moritz Hermann Jacdbi at St. Petersburg recommended a copper wire of given dimensions, the resistance of which Weber determined in absolute units.
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