Kundt's tube [SEP] named after
Kundt's tube
Kundt's tube is an experimental acoustical apparatus invented in 1866 by German physicist August Kundt 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.
How it works.
The tube is a transparent horizontal pipe which contains a small amount of a fine powder such as
extension of the method renders possible the determination of the velocity of sound in different gases. This experimental apparatus is called a Kundt's Tube. In 1876 at Strasbourg in collaboration with Emil Warburg, Kundt proved that mercury vapour is a monatomic gas. In light, Kundt's name is widely known for his inquiries in anomalous dispersion, not only in liquids and vapours, but even in metals, which he obtained in very thin films by means of a laborious process of electrolytic deposition upon platinized glass. He also carried out many