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Man Shatters Glass With Voice

  1. Jul 9, 2005 #1
    I just saw an episode of Mythbusters where a guy succeeded in shattering a crystal glass with his unamplified voice.

    This guy tried on about twenty different glasses held directly in front of his mouth. Finally one shattered.
    They had him clocked at 550hz at 105 decibels when it finally worked.

    They believe this is the first time this has ever been filmed, and is confirmation of the longstanding rumors.
     
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  3. Jul 9, 2005 #2
  4. Jul 9, 2005 #3

    Ivan Seeking

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    How did they pick the frequency [note].
     
  5. Jul 9, 2005 #4
    the fundamental of the glass
     
  6. Jul 9, 2005 #5

    Chronos

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    They 'rang' the glass and used a frequency analyzer to plot the audio spectrum. Peaks in the audio spectrum give the resonant frequencies.
     
  7. Jul 9, 2005 #6
    How about the Memorex audiotape commercials from the 70's and early 80's. There was a rather large female opera singer next to a piano. They had her live and recorded voice break the glass. was this a sham?
     
  8. Jul 9, 2005 #7
    Do you guys like that show? Today I watched a 30 minute segment on cooling beer the fastest. Interesting stuff.

    Just so you know, the best way is with ice, water, and salt :)
     
  9. Jul 9, 2005 #8

    Janus

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    The singer in the comercial had her voice run through an amplifier. The trick here was it was done with no amplification at all, just the singer's raw voice.
     
  10. Jul 9, 2005 #9

    Ivan Seeking

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  11. Jul 9, 2005 #10
    He "rang" the glass, and got as close as he could by ear. He also had a straw standing inside each glass, and the closer he got to the resonant frequency, the more the straw was vibrated around in the glass.

    Getting the note wasn't nearly as hard as getting the amplitude. As Janus mentioned, shattering a glass can be done pretty easily with an amplified voice. The noteworthy thing here is that this proves someone could have done it before amplifier systems were invented, i.e.: an opera singer in the 1800s. All the first versions I ever heard of this story attributed this ability to one opera singer or another, (or to any opera singer who was good enough).
     
  12. Jul 9, 2005 #11

    Ivan Seeking

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    I read that in spite of his standing claim, after his death Caruso's wife admitted that he had never done this.
     
  13. Jul 9, 2005 #12
    All I can say is that they have proven it is not a physical impossibility.

    Of note is the fact the guy had to hold the glass an inch from his mouth. Whoever originally discovered this ability probably did so by accident, singing impromptu while drinking wine.

    One of the mythbuster guys tried it himself and mentioned how dangerous it seemed to be trying to shatter a glass an inch from his face. It could be alot of people don't have he guts to really give it their all, and end up pulling their punches.
     
  14. Jul 10, 2005 #13

    Ivan Seeking

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    Known well to all home made ice cream connoisseurs.
     
  15. Jul 10, 2005 #14
    yea mythbusters is the best show on tv :biggrin:
     
  16. Jul 10, 2005 #15

    Curious3141

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    Right now, I can do something far more impressive : I can shatter my tonsils with my voice. I have mono. :(
     
  17. Jul 10, 2005 #16
    Have you experienced any micropsia with that?
     
  18. Jul 10, 2005 #17

    Curious3141

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    No. No perceptual deficits (nothing remotely "Alice in Wonderland" or Lilliputian).
     
  19. Jul 18, 2005 #18
    tangent

    Has anyone ever heard rumors of Eastern Monks throwing needles through inch thick glass?


    I always wondered if that was true, seemed impossible...
     
  20. Jul 18, 2005 #19
    how is that tangent to the conversation?
     
  21. Jul 18, 2005 #20
    For anyone who may want to know, the note they sing is F{above middle C}.
     
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