 | John Tyndall - 1867 - 364 페이지
...this musical sound is passing ? Imagine one of the prongs of the vibrating fork swiftly advancing ; it compresses the air immediately in front of it,...when it retreats it leaves a partial vacuum behind, the process being repeated by every subsequent advance and retreat. The whole function of the tuning-fork... | |
 | John Tyndall - 1867 - 372 페이지
...this musical sound is passing ? Imagine one of the prongs of the vibrating fork swiftly advancing ; it compresses the air immediately in front of it,...when it retreats it leaves a partial vacuum behind, the process being repeated by every subsequent advance and retreat. The whole function of the tuning-fork... | |
 | Alexander Wilford Hall - 1878 - 300 페이지
...generating heat by squeezing the air into "condensations" when only traveling at the rate of seven inches a second, could hardly be expected to grasp an idea...air immediately in front of it, and when it retreats /'/ leaves a partial vacuum behind." Now, this amounts to an unprovoked scientific slander on our atmosphere!... | |
 | John Broadhouse - 1881 - 456 페이지
...which a musical sound is passing? Imagine one of the prongs of the vibrating fork swiftly advancing ; it compresses the air immediately in front of it,...when it retreats it leaves a partial vacuum behind, the process being repeated by every subsequent advance and retreat. The whole function of the tuning-fork... | |
 | 1883 - 402 페이지
...acoustics in all colleges: — " Imagine one of the prongs of the vibrating fork swiftly advancing. It compresses the air immediately in front of it,...when it retreats it leaves a partial vacuum behind, the process being repeated at every subseqnent advance and retreat The irholt function of the tuning-fork,... | |
 | 1884 - 400 페이지
...wave-theory in the English language: " Imagine one of the prongs of the vibrating fork meiftly advancing. It compresses the air immediately in front of it, and when it retreats it leaves a partial vacunm behind, the process being rejieated at every subsequent advance and retreat. The whole function... | |
 | 1891 - 208 페이지
...teach as these critics insist: "Imagine one of the prongs of the vibrating fork" frequently advancing ; "it compresses the air immediately in front of it, and when it retreats'" from frequently advancing "it leaves a partial vacuum behind " this great frequency of vibration, "the... | |
 | John I. Swander - 1886 - 372 페이지
...authority on acoustics in all colleges: "Imagine one of the prongs of the vibrating fork swiftly advancing. It compresses the air immediately in front of it,...when it retreats it leaves a partial vacuum behind, the process being repeated at every subsequent advance and retreat. The whole function of the tuning-fork... | |
 | John I. Swander - 1887 - 108 페이지
...on acoustics in all colleges: " Imagine one of the prongs of the vibrating fork swiftly advancing. It compresses the air immediately in front of it,...when it retreats it leaves a partial vacuum behind, the process being repeated at every subsequent advance and retreat. The whole function of the tuning-fork... | |
 | John I. Swander - 1887 - 110 페이지
...on acoustics in all colleges: " Imagine one of the prongs of the vibrating fork swiftly advancing. It compresses the air immediately in front of it,...when it retreats it leaves a partial vacuum behind, the process being repeated at every subsequent advance and retreat. The whole function of the tuning-fork... | |
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Imagine one of the prongs of the vibrating fork swiftly advancing. It compresses the air immediately in front of it, and when it retreats it leaves a partial vacuum behind, the process being repeated at every subsequent advance and retreat. 