“Jal Tarang” is a simple musical instrument which consists of seven glass bowls filled with varying degrees of water. Each sound corresponds with a musical scale allowing the musician to produce melodies. The scientific theory behind the tinkling music it produces is that the amount of water in the glass bowl affects the frequency of the resonance of the glass.

Here we are going to make our own “Jal Tarang” at home and check if the sounds produced by the seven glass bowls is indeed different. In case we practice hard enough we may just be able to play a simple tune with the home made, water based, musical instrument.

What you will need include seven glass bowls of the same kind. You can use any glass container but all seven must be the same size and shape. Water, a pencil or cocktail stirrer, and a measuring cup will also be needed.

Now measure out and add 20 ml water to the first bowl. Add 30 ml to the second, 40 ml to the third, and so on increasing the water content by 10 ml till all seven are done. Use the pencil or cocktail stirrer to gently strike the first glass container on the side. Proceed to heard the different sounds produced by each bowl in the scientific experiment.