THE MUSIC OF GLASSES

Why Do Crystal Glasses Make Sounds?

Crystal glasses can be used to make sounds in at least two different ways. One is by lightly "pinging" the sides of the glasses, and a second way is by rubbing the glasses' rims. Both methods work because of vibrations and frequency.

You can "play" crystal glasses.


You may not think of glassware as a musical instrument, but you can actually make some pretty interesting sounds by "playing" crystal glasses. Some people who really dedicate themselves to this art form are known as "glass harpists." You can create basic musical tones on crystal glasses by producing vibrations between your finger and the rims of the glasses--much like a bow produces vibrations when it rubs across violin string

According  to  Anson  (2007),  the  sound  of a  singing

wine  glass  is  created  by  friction  between  your  finger  and  the  glass  as  you  rub  it  along  the rim.  The  sides  of  the glasses  vibrate,  and  these  vibrations  create  little  waves  in  the  water as the water molecules get dragged along with the vibratory waves. Adding more water to the glass  means  that  there  is  more  water  to  slow  down  the vibration  of  the  glass,  which  results in  a  lower  note.  So,  by  having  many  glasses  with varying amounts of water in them, it is possible to have a wide array of notes that the player can choose from to create music.  It is, however,  very  difficult  to  tune  the  glasses  to  the  proper  note,

especially  given  the  problem of  evaporation.  It  is  also  dangerous  to  play  anything  with  a  quick  tempo,  since  the  full glasses  are  top-heavy  and  prone  to  tipping  (and  shattering  upon  impact,  as  I discovered  for

myself).  So  for  years,  the  wonderful  sound  of  this  instrument  was  confined  to  street-performances and the living rooms of amateur musicians.  

This  was,  of  course,  until  Benjamin  Franklin  heard  a  concert  played

Sumber

http://www.ehow.com/about_5330197_do-crystal-glasses-make-sounds.html#ixzz2D90YzYht (sumber 1)

http://www.ehow.com/how_6638094_make-crystal-glasses-sing.html (sumber 2)

http://www.google.co.id