Glass piano

When you use a wet finger and rub the top of the wine glass filled with water it will produce a sound. Vibrations begin to resonate together into sound waves we can hear. We can make the sounds loud or soft depending on how much pressure we place on finger. The pitch of the sound can also be changed by adjusting the amount of water in the glass. As soon as the first few vibrations are produced, the glass resonates. That means you are causing the crystals in the glass to vibrate together and create one clear tone (We can see one spike in the background and we can see two spikes when we hit glass with something else).

Soda lime glass is the most common type of glass representing 80% of all commercial glass. Soda lime glass is prepared by melting the raw materials, such as soda, lime, silica, and small quantities of fining agents in a glass furnace at temperatures locally up to 1675oC.