KUNDTS DUST TUBE

KUNDTS DUST TUBE

•  This Kundts Dust Tube shows the wavelength of vibrations in air in a closed tube, by depositing lycopodium powder at the nodes.
•  Comprising a glass tube 800mm long and Ø 32mm.
•  At one end is a tightly fitting but adjustable cork piston fitted to a metal rod 100cm long and at the other end, a loose fitting piston attached to a rod, 100cm in length and Ø 8mm.
•  Overall length fully closed, 1.89M approximately.

(Wikipedia excerpt: …”..Kundt’s tube is an experimental acoustical apparatus invented in 1866 by German physicist August Kundt[1][2] for the measurement of the speed of sound in a gas or a solid rod. The experiment is still taught today due to its ability to demonstrate longitudinal waves in a gas (which can often be difficult to visualise). It is used today only for demonstrating standing waves and acoustical forces. ..”)

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