Subject: Can I calculate or predict the resonant frequency of an object?

I know that by rubbing the rim of a crystal glass, a certain pitch is created which is it's resonant frequency.  If that pitch is recreated, it causes the crystal to vibrate and amplify the pitch, even to the point where it breaks the crystal glass.  I was wondering if there is anyway to calculate or predict an object's resonant frequency.  I also am curious to know if that method of rubbing the rim of the glass works on other types of glasses instead of just crystal.  I would appreciate a reply. Thank you. 
Meagan Wells

Re: Can I calculate or predict the resonant frequency of an object?