 Robinson, and his device was the first and simplest form of the siren. 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...  A System of Mechanical Philosophy - Síđa 404eftir John Robison - 1822 - 50 síđurHeildartexta - Um bókina
 | Perry Fairfax Nursey - 1829 - 482 síđur
...chirrup. An experiment was made, which was less promising of a sound than any that can be thought of. Л stop-cock was so constructed, that it opened and....passage through a pipe 720 times in a second. This appa. ratus was fitted to tbe pipe of a conduit leading from the bellows to the wind-chest of an organ.... | |
 | John Tyndall - 1867 - 364 síđur
...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...organ. The air was simply allowed to pass gently along this pipe by the opening of the cock. When this was repeated 720 times in a second, the sound g in... | |
 | John Tyndall - 1867 - 374 síđur
...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... | |
 | John Tyndall - 1867 - 372 síđur
...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... | |
 | United States. Light-House Board, George H. Elliot - 1874 - 396 síđur
...was first realized by Doctor Robisou, and his device was the first and simplest form of the siren. A stop-cock was so 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... | |
 | 1875 - 418 síđur
...air was first realized by Dr. Robinson, and his device was the first and simplest form of the siren. A stop-cock 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... | |
 | Edward Henry Knight - 1876 - 984 síđur
...was first realized by Dr. Rob, inson, and his device was the first and simplest form of the siren. A stop-cock 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... | |
 | 1875 - 800 síđur
...air was first realized by Dr. Robinson, and his device was the first and simplest form of the siren. 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... | |
 | Robert T. Beyer - 1999 - 472 síđur
...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... | |
 | Great Britain. Parliament. House of Commons - 1874 - 602 síđur
...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... | |
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