 | John Henry Pepper - 1869 - 722 pages
...more intensity in the direction of the wind than in the contrary direction. A modification of the law, that the intensity of sound varies inversely as the square of the distance, takes place when sound is caused to travel through long smooth tubes. The sound moves like... | |
 | Adolphe Ganot, William Guy Peck - 1871 - 516 pages
...sonorous body increases. This is expressed by saying that, the intensity of sound varies inversely as the. square of the distance from the sonorous body....smaller, and when the vibrations cease, the sound is no longer heard. The amplitude of vibration of the sonorous body determines the length, or amplitude... | |
 | John Henry Pepper - 1873 - 112 pages
...more intensity in the direction of the wind than in the contrary direction. A modification of the law, that the intensity of sound varies inversely as the square of the distance, takes place when sound is caused to travel through long smooth tubes. The sound moves like... | |
 | 1875 - 742 pages
...constructed is that air is the conducting medium in all tubular stethoscopes ; and that the law of acoustics, that the intensity of sound varies inversely as the square of the distance, does not apply to tubes. The stethoscope, accordingly, consists of a piece of silk-covered... | |
 | 1875 - 742 pages
...constructed is that air is the conducting medium in all tubular stethoscopes ; and that the law of acoustics, that the intensity of sound varies inversely as the square of the distance, does not apply to tubes. The stethoscope, accordingly, consists of a piece of silk-covered... | |
 | John Henry Pepper - 1877 - 764 pages
...more intensity in the direction of the wind than in the contrary direction. A modification of the law, that the intensity of sound varies inversely as the square of the distance, takes place when sound is caused to travel through long smooth tubes. The sound moves like... | |
 | Gerald Molloy - 1880 - 134 pages
...Resonators of Helmholtz, and explain how they may be employed for the analysis of musical sounds. 7. Prove that the intensity of sound varies inversely as the square of the distance from the sounding body ; and show that this principle does not apply to the case of speaking-tubes.... | |
 | University of Toronto. Mathematical and Physical Society - 1891 - 136 pages
...broadcast through the land for the enlightenment of college students," (p. 103). Professor Tyndall states that the intensity of sound varies inversely as the square of the distance, and to explain this law he takes one foot as the unit of length, saying that at the distance... | |
 | 1897 - 878 pages
...both the quantitative and qualitative audition of the normal ear. It is a well-known physical law, that the intensity of sound varies inversely as the square of the distance from the sounding body, hence, the quantitative audition is easily determined by comparing... | |
 | Albert Abrams - 1900 - 204 pages
...the following method, which is only relatively accurate: It is based on the simple physical principle that the intensity of sound varies inversely as the square of the distance from the sounding body, hence the distance to which a heart sound may be heard depends upon... | |
| |
Sounds are propagated better in calm than in stormy weather, also with more intensity in the direction of the wind than in the contrary direction. A modification of the law, that the intensity of sound varies inversely as the square of the distance, takes... 
