 | John Frederick William Herschel - 1851 - 572 páginas
...fibres of silk, and made to vibrate in the horizontal plane on either side of its position of rest, the square of the number of vibrations in a given time is a measure of the horizontal component of the magnetic force of the Earth, but is also dependent on the individual properties... | |
 | Great Britain. Admiralty - 1871 - 424 páginas
...fibres of silk, and made to vibrate in the horizontal plane on either side of its position of rest, the square of the number of vibrations in a given time is a measure of •the horizontal component of the magnetic force of the Earth. But this measure is dependent on the individual... | |
 | John Frederick William Herschel, Robert Main - 1871 - 420 páginas
...fibres of silk, and made to vibrate in the horizontal plane on either side of its position of rest, the square of the number of vibrations in a given time is a measure of the horizontal component of the magnetic force of the Earth. But this measure is dependent on the individual... | |
 | Frederick John Evans - 1875 - 174 páginas
...and the earth, and the product of the same two forces is known by the vibrations of the magnet, as the square of the number of vibrations in a given time is proportional to the product of the magnetic force of the earth and that of the bar. * " It is a remarkable... | |
 | Augustin Privat-Deschanel - 1878 - 302 páginas
...measurements. If a magnet executes small horizontal vibrations under the influence of the earth's magnetism, the square of the number of vibrations in a given time is proportional to , H denoting the horizontal intensity, M the moment of the magnet, and p its moment... | |
 | Augustin Privat-Deschanel - 1878 - 308 páginas
...measurements. If a magnet executes small horizontal vibrations under the influence of the earth's magnetism, the square of the number of vibrations in a given time is proportional to , H denoting the horizontal intensity, M the moment of the magnet, and p its moment... | |
 | Augustin Privat-Deschanel - 1881 - 302 páginas
...measurements. If a magnet executes small horizontal vibrations under the influence of the earth's magnetism, the square of the number of vibrations in a given time is proportional to , H denoting the horizontal intensity, M the moment of the magnet, and /t its moment... | |
 | 1889 - 530 páginas
...is based upon 2 well-known principles : (I) The force acting on the armature of an electro-magnet, in any position, is proportional to the square of...and nature of the meter may vary in many details. One form consists, primarily, of an electro-magnet (the upper one), through the coils of which passes... | |
 | 1891 - 966 páginas
...cms. in length, and made to vibrate in the horizontal plane on either side of its position of rest. The square of the number of vibrations in a given time is a measure of the intensity of the horizontal component of the magnetic force of the Earth, a centimetre of space, a... | |
 | John Hopkinson - 1896 - 188 páginas
...square of the number of vibrations, say, of a pendulum, is a measure of the controlling forceTherefore, if the controlling force under which a body vibrates...meter may vary in many details. The one now shown consists, primarily, of an electromagnet — the upper one in the diagram — through the coils of... | |
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The force acting on the armature of an electro-magnet, in any position, is proportional to the square of the current ; (2) the square of the number of vibrations, say, of a pendulum, is a measure of the controlling force. Therefore, If the controlling... 