Tuning-fork Sentence Examples
On the same band a tuning-fork electrically maintained and a seconds clock actuating another style wrote parallel records.
The time between the breaks could be measured in seconds by the clock signals, and in fractions of a second by the tuning-fork record.
If, at the same time, a tuning-fork of known number of vibrations per second be made to trace its own line close to the other, a comparison of the two lines gives the number corresponding to the sound under consideration.
The motion of the fork is maintained by the clock acting through an escapement, and the dial registers both the number Koenig's of vibrations of the fork and the seconds, minutes and Tuning-fork hours.
We may illustrate the successive modes of vibration by using as pipe a tall cylindrical jar, and as exciter a vibrating tuning-fork held over the mouth.
The most important example of this type is the tuning-fork, which may be regarded as consisting of two parallel bars clamped together at the base.
But if a tuning-fork of appropriate frequency be set vibrating with its stalk in contact with the holder of the pipe from which the jet issues, the jet appears to go over in one continuous thread.
If a tuning-fork in vibration be turned round before the ear, four positions will be found in which A B it will be inaudible, owing to the mutual interference FIG.
Perhaps an electrically maintained tuning-fork is still better.
The copper anode begins to resonate, much like a tuning fork.Advertisement
A tuning fork produces a single note - a pure sine wave.
Should the rotating arms fail to pass over these correcting segments at their synchronous positions, correcting currents pass to a relay which cuts off momentarily the current actuating the tuning-fork, thereby altering the rate of vibration of the latter until the arms once more run together uniformly.
One form consists of a tuning-fork electrically maintained in vibration of known period, which closes an electric contact at every vibration and sets another electromagnet in operation, which reverses a switch and moves over one terminal of the condenser from a battery to a galvanometer contact.
The displacement curve of the waves from a tuning-fork on its resonance box, or from the human voice sounding oo, are nearly smooth and symmetrical, as in fig.
It may thus be brought into unison with any sound of which it may be required to determine the corresponding number of vibrations per second, as for instance the note A3, three octaves higher than the A which is indicated musically by a small circle placed between the second and third lines of the G clef, which A is the note of the tuning-fork usually employed for regulating concert-pitch.Advertisement
The wheel rotates between Phonic the poles of an electro-magnet, which is fed by an intermittent current such as that which is working an electrically maintained tuning-fork (see infra).
But that 's only one prong of the tuning fork.
A U-shaped piece of metal, the tuning fork is one of the earliest tuning aids.
One uses a tuning fork by hitting it and hearing a note.
In the event of exercise-related stress fractures (micro-fractures due to excessive stress), a tuning fork can provide a simple, inexpensive test.Advertisement
The tuning fork is a metal instrument with a stem and two prongs that vibrate when struck.
If an individual has increased pain when the tuning fork is placed on a bone, such as the tibia or shinbone, the likelihood of a stress fracture is high.
The clinician usually uses a special instrument called a tuning fork and tests for air conduction and structural problems which can occur inside the ear.
It also features an electronic tuning fork movement with 15 jewels and a sweeping second hand.
A metal or brass tube will serve as such a pipe, and may be excited by a suitable tuning-fork held at one end.Advertisement