Suppose a note of 800 vibrations per second is sung. 伯莎M.克拉克.科学通论.
The needle, in passing rapidly in contact with the recorded waves, was vibrated up and down, causing corresponding vibrations of the diaphragm. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Seashells when held to the ear seem to contain the roar of the sea; this is because the air within the shell is set into sympathetic vibrations by some external tone. 伯莎M.克拉克.科学通论.
His work with his deaf and dumb pupils was all in the line of making sound vibrations visible to the eye. 鲁伯特·萨金特·荷兰.历史性发明.
The contraction of the frog's legs may with considerable safety be said to be caused by these mechanical vibrations being transmitted through the conducting wires. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Every variation in the speaker's voice is repeated in the vibrations of the metal disk and hence in the minute motion of the pointer and in the consequent record on the cylinder. 伯莎M.克拉克.科学通论.
By means of an apparatus called the siren, it is possible to calculate the number of vibrations producing any given musical note, such, for example, as middle C on the piano. 伯莎M.克拉克.科学通论.
As the singer interprets the song the vibrations set up by the singer’s voice are communicated to the diaphragm by the passage of the sound through the horn. 佚名.神奇的知识之书.
But the intensity of the vibrations diminishes very rapidly with the distance; so that even with the aid of speaking-tubes and trumpets it is impossible to exceed somewhat narrow limits. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
These indentations correspond to the vibrations imparted to the needle through the diaphragm, and are the recorded sounds made by the singer or band. 佚名.神奇的知识之书.
His far-distant goal was to construct a machine that would carry, not the dots and dashes of the telegraph, but the complex vibrations of the human voice. 鲁伯特·萨金特·荷兰.历史性发明.
It is by means of these three bones that the vibrations of the ear drum are transmitted to the inner wall of the cavity. 伯莎M.克拉克.科学通论.
His study of the effect of vibrations on the human eardrum showed Bell what path he should follow. 鲁伯特·萨金特·荷兰.历史性发明.
The isochronism of the vibrations of the pendulum inferred from this observation was not published or put to practical application in clocks for nearly sixty years afterward. 威廉·亨利·杜利特.世纪发明.
Reis evidently did not know how to make the vibrations of his diaphragm translate themselves into exactly commensurate and correlated electric impulses of equal rapidity, range, and quality. Edward W. Byrn.十九世纪发明进展.
The weight presses the stylus to its work, but because of its mass it cannot respond to the extremely rapid vibrations of the stylus. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
He studied the effect of vibrations upon the bones of the ear, and this led him to experiment with vibrating a thin piece of iron before an electro-magnet. 鲁伯特·萨金特·荷兰.历史性发明.
About ten feet away we applied the wire to the back of the neck and it gives a horrible sensation, showing the vibrations conducted through the wire. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
Three devices for utilizing vibrations beyond the ultra violet. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
The vibrations of the second plate are similar to those produced in the first plate by the voice. 伯莎M.克拉克.科学通论.
The pitch of pianos, from the lowest bass note to the very highest treble, varies from 27 to about 3500 vibrations per second. 伯莎M.克拉克.科学通论.
In practice, this buzzer was continuously operated at a speed of about five hundred vibrations per second by an auxiliary battery. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
When this motion reaches the ear, it sets the drum of the ear into vibration, and these vibrations are in turn transmitted to the auditory nerves, which interpret the motion as sound. 伯莎M.克拉克.科学通论.
He and others had used the pendulum for dividing time, but moved it by hand and counted its vibrations. 威廉·亨利·杜利特.世纪发明.
In real practice this spectacular playing with sound vibrations, as if they were lacrosse balls to toss around between the goals, could be materially simplified. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
A telephone receiver whereby the vibrations of the diaphragm are considerably amplified. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
This labyrinth is filled with a fluid in which are spread out the delicate sensitive fibers of the auditory nerves; and it is to these that the vibrations must be transmitted. 伯莎M.克拉克.科学通论.
Edison thought that the longitudinal vibrations caused by the sounder produced a more marked effect, and proceeded to try out his theory. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.
In the early Edison phonograph the sound vibrations were registered on a tinfoil-covered cylinder. 佚名.神奇的知识之书.
The very slightest vibrations communicated to the wood are heard distinctly in the telephone. 威廉·亨利·杜利特.世纪发明.