A pair of hands holding a tube and tuning fork over a resonator.

Hands with tuning fork and tube

A pair of hands holding a tube and tuning fork over a resonator.

"Bow or pluck the string of a sonometer near its end, thus setting it in vibration as a hole. The string will have the appearance of a single spindle as shown, and will sound the lowest tone that it is capable of producing." -Avery 1895

Sound Wave, fundamental frequency

"Bow or pluck the string of a sonometer near its end, thus setting it in vibration as a hole. The string…

A tuning fork on top of a hollow box.

Tuning fork and box

A tuning fork on top of a hollow box.

An illustration showing the vibration of plates be using a rosined bow and a steel plate.

Vibration of Plates

An illustration showing the vibration of plates be using a rosined bow and a steel plate.

"Vibration of a wire. A conducting copper wire, w, is suspended by a loop from a hook of the same metal, which passes through the arm of metal or wood, as seen in the cut. The upper end of the hook terminates in the cup P, to contain mercury. The lower end of the copper wire just touched the mercury, Q, contained in a little trough about an inch long, formed in the wood on which the horseshoe magnet, M, is laid, the mercury being equally distant from the two poles. The cup, N, has a stem of wire which passes through the wood of the platform into the mercury, this end of the wire being tinned, or amalgamated, so as to form a perfect contact." —Comstock, 1850

Wire Vibration

"Vibration of a wire. A conducting copper wire, w, is suspended by a loop from a hook of the same metal,…