 | John Robison - 1822 - 712 pages
...chirrup. An experiment was made, which was less promising of a sound than any that can be thought of. A stop-cock was so constructed, that it opened and shut the passage through a pipe 720 times in a second. This apparatus was fitted to the pipe of a conduit leading from... | |
 | John Tyndall - 1867 - 374 pages
...notice under the name of the syren. Eobison describes his experiment in the following words : — ' A stopcock was so constructed that it opened and shut the passage of a pipe 720 times in a second. The apparatus was fitted to the pipe of a conduit leading from the bellows to the wind-chest of an... | |
 | John Tyndall - 1867 - 372 pages
...notice under the name of the syren, Kobison describes his experiment in the following words : — ' A stopcock was so constructed that it opened and shut the passage of a pipe 720 times in a second. The apparatus was fitted to the pipe of a conduit leading from the bellows to the wind-chest of an... | |
 | United States. Light-House Board, George H. Elliot - 1874 - 396 pages
...rapidity. The production of these tympanic shocks by puffs of air was first realized by Doctor Robisou, and his device was the first and simplest form of...constructed that it opened and shut the passage of a pipe seven hundred and twenty times in a second. Air being allowed to pass intermittently along the pipe... | |
 | 1875 - 418 pages
...membrane is struck periodically with sufficient rapidity. The production of these tympanic shocks by puffs of air was first realized by Dr. Robinson, and his...during the rotation of the cock, a musical sound was most smoothly uttered. A great step was made in the construction of the instrument by Cagniard de la... | |
 | 1875 - 360 pages
...tympanic shocks by pulls of air was first realized by Dr. j Robison. A stopcock was so con- j structed that it opened and shut the passage of a pipe 720 times in a' second. Air from the wind-cheat of : an organ being allowed to pass along I the pipe during the rotation of the ! cock,... | |
 | 1875 - 800 pages
...membrane is struck periodically with sufficient rapidity. The production of these tympanic shocks by puffs of air was first realized by Dr. Robinson, and his...during the rotation of the cock, a musical sound was most smoothly uttered. A great step was made in the construction of the instrument by Cagniard de la... | |
 | Robert T. Beyer - 1999 - 472 pages
...1799, John Robison developed a controllable sound source. Tyndall described Robison's work as follows: A stop-cock was so constructed that it opened and shut the passage of a pipe 720 times in a second. The apparatus was fitted to the wind-chest of an organ . . . the sound g in alt was most smoothly uttered... | |
 | Great Britain. Parliament. House of Commons - 1874 - 602 pages
...air was first realised by Dr. Robison, and his device was the first and simplest form of the syren. A stop-cock was so constructed that it opened and...shut the passage of a pipe 720 times in a second. Air being allowed to pass intermittently along the pipe by the rotation of the cock, " a musical sound... | |
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A stopcock was so constructed that it opened and shut the passage of a pipe 720 times in a second. Air from the wind-chest of an organ being allowed to pass along the pipe during the rotation of the cock, a musical sound was most smoothly uttered. 