 | Mary Somerville - 1835 - 532 páginas
...perpendicular to the sounding board, and least when they are in the same plane with it. The sounding board of the piano-forte is better disposed than that of any other stringed instrument, because the hammers strike the strings so as to make them vibrate at right angles to it. In the guitar,... | |
 | Mary Somerville - 1840 - 858 páginas
...sounding body are perpendicular to the sounding-board, and least when they are in the same plane with it. The sounding-board of the piano-forte is better disposed than that of any other stringed instrument, because the hammers strike the strings so as to make them vibrate at right angles to it. In the guitar,... | |
 | Mary Somerville - 1846 - 496 páginas
...sounding body are perpendicular to the sounding-board, and least when they are in the same plane with it. The sounding-board of the piano-forte is better disposed than that of any other stringed instrument, because the hammers strike the strings so as to make them vibrate at right fengles to it. In the guitar,... | |
 | Mary Somerville - 1849 - 568 páginas
...sounding body are perpendicular to the sounding-board, and least when they are in the same plane with it. The soundingboard of the piano-forte is better disposed than that of any other stringed instrument, because the hammers strike the strings so as to make them vibrate at right angles to it. In the guitar,... | |
 | John Henry Pepper - 1877 - 764 páginas
...of easy explanation. The sounding-board of the pianoforte is better disposed than that of anyother stringed instrument, as the planes of the vibrations...strings are, on account of the direction in which they arc struck by the hammers, always perpendicular to its surface. The difference of intensity when a... | |
 | Sir Charles Wheatstone - 1879 - 446 páginas
...tuning-fork perpendicularly to the surface of a flat board ; and the second, by placing it perpendicularly to one of the edges of the board. In intermediate...in this way, and when it vibrates parallel to the surface, is very obvious, and may be easily tried by striking it with the finger in these two directions*.... | |
 | Sir Charles Wheatstone - 1879 - 454 páginas
...tuning-fork perpendicularly to the surface of a flat board ; and the second, by placing it perpendicularly to one of the edges of the board. In intermediate...in this way, and when it vibrates parallel to the surface, is very obvious, and may be easily tried by striking it with the finger in these two directions*.... | |
 | Sir Charles Wheatstone - 1879 - 452 páginas
...instruments admit of easy explanation. The souudi tig-board of the piano-forte is better disposed thaa that of any other stringed instrument, as the planes...hammers, always perpendicular to its surface. The différence of intensity when a string vibrates in this way, and when it vibrates parallel to the surface,... | |
 | David Josiah Brewer, Edward Archibald Allen, William Schuyler - 1900 - 462 páginas
...sounding body are perpendicular to the sounding-board, and least when they are in the same plane with it. The sounding-board of the pianoforte is better disposed than that of any other stringed instrument, because the hammers strike the strings so as to make them vibrate at right angles to it. In the guitar,... | |
 | David Josiah Brewer - 1902 - 452 páginas
...sounding body are perpendicular to the sounding-board, and least when they are in the same plane with it. The sounding-board of the pianoforte is better disposed than that of any other stringed instrument, because the hammers strike the strings so as to make them vibrate at right angles to it. In the guitar,... | |
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In intermediate positions — viz. when the vibrations are communicated obliquely to the surface — the sound will be found to have intermediate degrees of intensity. These facts, which the extensive investigations of Savart place in full evidence, being... 