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sir i have seen the incident of breaking of glass of car. i have noted it separates into many pieces?why does it happen?

nehal helal , 15 Years ago
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SAGAR SINGH - IIT DELHI

Dear student,

Glass has a natural resonance frequency, meaning a frequency at which the glass starts reverberating. If you can find the resonant frequency of a piece of glass, match that frequency with a sound-producing device, such as your voice, and produce a loud enough sound, you can break the glass. 

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