Tubular Bells

Tubular bells consist of aluminium tubes that are struck with mallets to produce
sound. There are eight tubes of varying sizes. When the long tube is struck it produces a low,
deeper tone while the shorter tubes produces higher tones. This is because longer tubes support vibrations of longer wavelength When a tubular bell is struck initially a large variety of vibrations are produced but only some of these vibrations are sustained while others fade away rapidly. The first three sustained tones correspond to a set of frequencies in the ratio of 2:3: 4 resulting in a melodic tone!

"When you strike them in
succession, you will be able to hear the notes of the octave – sa, ri, ga, ma, pa dha, ni. Did you know: the seven notes of Indian music – sa, ri, ga,ma, pa, dha, ni correspond to the
seven notes in western music – do, re, mi, fa, so, la, ti?"