Kundt's tube

Kundt's tube

Kundt's tube is an experimental setup of August Kundt for the measurement of the speed of sound in both a gas and a solid rod.

The setup is a transparent pipe which contains a powder such as talc. In one end of the tube is a piston which can be used to tune the tube to resonance.

Kundt's tube can be used to demonstrate sound wave superposition and standing waves. The signal generator is turned on to about 100Hz (which is a frequency easily audible to humans). Then the adjustable end is moved until a loud sound is heard. This loud sound is a result of making the length of the tube system a multiple of sound wavelengths.When this natural frequency is heard, the dust or talc will form equally spaced piles (nodes) and in between these nodes will be areas of little or no dust (antinodes). The distance between nodes can be measured to be the sound's wavelength/2.


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  • Kundt’s tube — Kundto vamzdis statusas T sritis fizika atitikmenys: angl. Kundt’s tube vok. Kundtsches Rohr, n rus. труба Кундта, f pranc. tube de Kundt, m …   Fizikos terminų žodynas

  • Kundt's tube — noun a measuring instrument used to measure the speed of sound • Hypernyms: ↑measuring instrument, ↑measuring system, ↑measuring device …   Useful english dictionary

  • Tube de kundt — Tubes à impédance (nouvelle génération du tube de Kundt) Le tube de Kundt, nommé d après son inventeur (August Kundt), est un dispositif expérimental permettant de mettre en évidence les ondes stationnaires sonores dans un tube rempli d air. Le… …   Wikipédia en Français

  • Tube de Kundt — Le tube de Kundt ou appareil à ondes stationnaires, nommé d après son inventeur August Kundt, est un dispositif expérimental permettant de mettre en évidence les ondes stationnaires sonores dans un tube rempli d air. Sommaire 1 Mesure du… …   Wikipédia en Français

  • tube de Kundt — Kundto vamzdis statusas T sritis fizika atitikmenys: angl. Kundt’s tube vok. Kundtsches Rohr, n rus. труба Кундта, f pranc. tube de Kundt, m …   Fizikos terminų žodynas

  • kundt tube — ˈku̇nt noun Usage: usually capitalized K Etymology: after August Kundt died 1894 German physicist : an acoustically resonating horizontal glass tube in which the standing wave nodes are exhibited by the distribution of a fine powder and that is… …   Useful english dictionary

  • Kundt tube — /koont/, Physics. a gas filled tube used to measure the speed of sound: when a membrane at one end is vibrated at a frequency that produces standing waves, a layer of powder forms lumps at the nodes. [named after August Kundt (1839 94), German… …   Universalium

  • Kundt, August — ▪ German physicist born November 18, 1839, Schwerin, duchy of Mecklenburg Schwerin [Germany] died May 21, 1894, Israelsdorf, near Lübeck, Germany       German physicist who developed a method for determining the velocity of sound in gases and… …   Universalium

  • August Kundt — Infobox Scientist name = August Kundt |196px image width = 196px caption = August Adolf Eduard Eberhard Kundt birth date = birth date|1839|11|18|df=y birth place = Schwerin, Mecklenburg, Germany nationality = German death date = death date and… …   Wikipedia

  • August Kundt — (né à Schwerin le 18 novembre 1839 ; † le 21 mai 1894 à Lübeck, dans le faubourg d’Israelsdorf) est un physicien allemand qui a étudié les phénomènes ondulatoires. Il a inventé le tube de Kundt qui permet de matérialiser les ondes sonores… …   Wikipédia en Français

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