 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.  Sound - Página 53por John Tyndall - 1867 - 335 páginasVista completa - Acerca de este libro
 | John Robison - 1822 - 722 páginas
...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...organ. The air was simply allowed to pass gently along tfu's pipe by the opening of the cock. When this was repeated 720 times in a second, the sound g in... | |
 | John Robison - 1822 - 712 páginas
...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... | |
 | Perry Fairfax Nursey - 1829 - 482 páginas
...opened and. shut the 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...gently along this pipe, by the opening of the cock. The sound G in alt. was most smoothly uttered, equal in sweetness to a clear female voice. When tbe... | |
 | United States. Light-House Board, George H. Elliot - 1874 - 396 páginas
...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 the pipe... | |
 | 1875 - 418 páginas
...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 pipe during the rotation of the... | |
 | 1875 - 360 páginas
...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... | |
 | Edward Henry Knight - 1876 - 984 páginas
...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 pipe during the rotation of the... | |
 | 1875 - 800 páginas
...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 pipe during the rotation of the... | |
 | Robert T. Beyer - 1999 - 472 páginas
...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...times in a second. The apparatus was fitted to the wind-chest of an organ . . . the sound g in alt was most smoothly uttered equal in sweetness to a clear... | |
 | Great Britain. Parliament. House of Commons - 1874 - 602 páginas
...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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