Resonance & Rubens Tubes

Designed by Timstar in response to customer enquiries, the Rubens' Tube provides a memorable demonstration of standing waves. The Rubens' Tube consists of a 10 cm diameter aluminium tube with row of small holes drilled along the top, and a 15 W loudspeaker mounted at one end, and is supplied with instructions. Natural gas or LPG can be used, with a length of burner tubing to connect it to the supply. The speaker can be driven directly using signal generator with power output, but Rubens' Tube Driver (SO180900) is recommended for best effect.

This apparatus is designed for demonstration of standing waves and for determination of the wavelengths of sound waves in air. The tube is supplied with a millimetre scale and moveable piston for changing the length of the air column. (You will also need an external sound source e.g. 1 kHz tuning fork.) Dimensions (L x Dia.): 660 x 300 mm.

This apparatus is ideal for all resonance investigations in air columns particularly the Salters MUS Activity 9. The main tube takes high power sound wave generator unit plugged in to one end. The generator is driven by a standard laboratory signal generator and as the frequency is adjusted the various resonance modes are detected by increased loudness of the note. The open pipe can be studied or a variable length closed pipe can be used by inserting the piston assembly provided. By using a higher amplitude on the generator, Kundt's tube investigations can be undertaken. Fine cork or polystyrene dust is distributed throughout the tube and at resonance the powder gathers at the nodes. Wavelengths can be easily measured. To get a good response a closed tube is preferable, to reduce the sound levels in the laboratory while producing a measurable effect. The apparatus comes complete with two supports for the tube, sound wave generator, resonance tube, closing bung and full instructions. Dimensions (L x Dia.): 1 metre x 50 mm.

Designed by Timstar in response to customer enquiries, the Rubens' Tube provides a memorable demonstration of standing waves. The Rubens' Tube consists of a 10 cm diameter aluminium tube with row of small holes drilled along the top, and a 15 W loudspeaker mounted at one end, and is supplied with instructions. Natural gas or LPG can be used, with a length of burner tubing to connect it to the supply. The speaker can be driven directly using signal generator with power output, but Rubens' Tube Driver (SO180900) is recommended for best effect.

This unit can be used to drive the Rubens' Tube with an audio source, such as an MP3 player, or device with signal generator app. It features a 3.5 mm socket for an input, and includes a lead to connect it to a signal source, such as the headphone output of mobile phone or laptop. A stereo signal is converted to mono so both channels can be heard on the Rubens' Tube. Output is via pair of 4 mm sockets, for connection directly the Rubens' Tube speaker. It is powered by plug-top power supply.