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" Because of the various expansion of metals, respecting which no two pyrometers agree ; the changeable nature of the atmosphere ; the uncertainty as to the true level of the sea ; the extreme difficulty of measuring accurately the distance between the... "
Former Clock & Watchmakers and Their Work: Including an Account of the ... - Page 194
by Frederick James Britten - 1894 - 397 pages
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The Edinburgh Philosophical Journal, Volume 10

1824 - 428 pages
...thought, have altered the form of so delicate an edge in a slight degree, and thus have virtually lessened the distance between the point of suspension and the centre of oscillation *. " As the whole pendulum had acquired a coating of oxide, with the exception of the tail-piece, which...
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The Edinburgh Philosophical Journal, Volume 10

1824 - 432 pages
...thought, have altered the form of so delicate an edge in a slight degree, and thus have virtually lessened the distance between the point of suspension and the centre of oscillation *. " As the whole pendulum had acquired a coating of oxide, with the exception of the tail-piece, which...
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Knowledge for the people, or, The plain why and because, Part 1

John Timbs - 1831 - 302 pages
...; the uncertainty as to the true level of the sea ; the extreme difficulty of measuring accurately the distance between the point of suspension and the centre of oscillation, and even of finding that centre ; also the variety of terrestrial attraction, from which cause the...
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The Results of Machinery: Namely, Cheap Production and Increased Employment ...

Charles Knight - 1831 - 324 pages
...atmosphere ; the uncertainty as to the true level of the sea; the extreme difficulty of measuring accurately the distance between the point of suspension and the centre of oscillation, and even of finding that centre ; also the variety of terrestrial attraction, from which cause the...
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The Mirror of Literature, Amusement, and Instruction, Volume 17

1831 - 472 pages
...; the uncertainty as to th« true level of the sea ; the extreme difficulty of measuring accurately the distance between the point of suspension and the centre of oscillation, and even of finding that centre ; also the variety of terrestrial attraction, from which cause the...
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Knowledge for the People, Or, The Plain why and Because, Volume 2

John Timbs - 1832 - 314 pages
...atmosphere ; the uncertainty as to the true level of the sea; the extreme difficulty of measuring accurately the distance between the point of suspension and the centre of oscillation, and even of finding that centre ; also the variety of terrestrial attraction, from which cause the...
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Knowledge for the People ...

John Timbs - 1832 - 362 pages
...atmosphere ; the uncertainty as to the true level of the sea; the extreme difficulty of measuring accurately the distance between the point of suspension and the centre of oscillation, and even of finding that centre ; also the variety of terrestrial attraction, from which cause the...
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Family Magazine: Or Monthly Abstract of General Knowledge, Volume 3

1836 - 496 pages
...atmosphere ; the uncertainty as to the true level of the sea; the extreme difficulty of measunng accurately the distance between the point of suspension and the centre of oscillation, and even of finding Uiat centre. Besides these, another source of eirour has been lately discovered,...
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The Family Magazine, Or, General Abstract of Useful Knowledge, Volume 3

1843 - 488 pages
...; the uncertainty as to the true level of the sea ; the extreme difficulty of measuring accurately the distance between the point of suspension and the centre of oscillation, and even of finding that centre. Besides these, another source of errour has been lately discovered,...
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Monthly Notices of the Royal Astronomical Society, Volume 15

1855 - 248 pages
...thread or wire. He states that for a pendulum oscillating half-seconds, he found by calculation that the distance between the point of suspension and the centre of oscillation was exactly 9^ inches, Rhinland measure. (Letter Booh of the Royal Society, vol. ip 225.) The letter...
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