British Almanac and CompanionStationers' Company, 1888 |
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1 - 3 találat összesen 13 találatból.
65. oldal
... vibration as another , and it must have no unnatural period of vibration , or a vibration once set up in it must die out as soon as the cause exciting the vibration is removed . It is impossible to form a disc absolutely fulfilling ...
... vibration as another , and it must have no unnatural period of vibration , or a vibration once set up in it must die out as soon as the cause exciting the vibration is removed . It is impossible to form a disc absolutely fulfilling ...
69. oldal
... vibration , and by their vibrations near the magnet would cause variations of corresponding frequencies in the current circulating through the circuit , and that these variations in the current would at the receiving instrument set in ...
... vibration , and by their vibrations near the magnet would cause variations of corresponding frequencies in the current circulating through the circuit , and that these variations in the current would at the receiving instrument set in ...
71. oldal
... vibration in the air of even the smallest amplitude . That the amplitude of the aërial vibrations to which the ear is sensi- tive must be of extreme smallness may be readily seen by such considerations as the following : -A whistle ...
... vibration in the air of even the smallest amplitude . That the amplitude of the aërial vibrations to which the ear is sensi- tive must be of extreme smallness may be readily seen by such considerations as the following : -A whistle ...
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