Kundt's Tube

Glass tube for demonstrating standing sound waves and calculating wavelengths of sound using cork powder in a method devised by Kundt.

Cork powder is spread evenly throughout the tube by means of a filler chute. Then a sound source, e.g. a whistle, a 1700 Hz tuning fork (U10115) or a horn speaker (U8432680), is used to excite the powder into a regular pattern of nodes and antinodes.

The effective length of the tube can be altered by means of a piston.

Length: 600 mm
External diameter: 20 mm
Internal diameter: 17 mm

Contents:

• 1 Glass tube with funnel
• 1 Plunger
• 1 Filler chute
• 1 Whistle
• 1 Bottle of cork powder