Wine glass resonance in slow motion

  • Published on Mar 6, 2009
  • Vibration and shattering of a wine glass in front of a loudspeaker. The tone matches the glass resonance frequency
  • Science & TechnologyScience & Technology

Comments • 112

  • Useless Discussion
    Useless Discussion Month ago

    So, when you say the wine glass is oscillating at 300 something time per second.. Is this, any particular non-node on the rim of the glass basically? Has a frequency of 300 whatever Hz? I am curious about the fact that in the glass, as you show us the footage of, the "top and bottom" sides are compressing and expanding together whereas the 'left and right' sides are also doing this, but each (left from top, bottom from right etc) are like say 90 degrees out of phase from each other, and so is the actual tone the glass is making maybe (at least in the center of the glass idk?) like then TWICE the 300 something Hz? This is most interesting!

  • Jiang Cheng
    Jiang Cheng 4 months ago

    Nice shoot! What’s the voltage of the output signal from the function generator when broking the glass?

  • Dev Gamer
    Dev Gamer 5 months ago

    Looks classy

  • yogesh nandal
    yogesh nandal 6 months ago

    Same applicable to metal or porcelain?

  • Albert Redditt
    Albert Redditt 7 months ago +2

    They show the waves in the glass , waveform amplification , like i said...
    The glass wobbles more than the speaker travels.
    The speak travels like 1/16 and the glass wobbles like 3/16
    If the glass didn't break ( made of rubber)it would wobble like 1 or 2 inches after a few seconds ..

  • Goku Black
    Goku Black 10 months ago

    this guy is just going super saiyan

  • Len David Hart
    Len David Hart Year ago

    Thanks for posting
    What is left of that wine glass has a new frequency

  • Indian Einstein
    Indian Einstein Year ago

    awesome ! u guys are gr8

  • Piano Planet
    Piano Planet Year ago

    A very good you sir....

  • lisa norrington
    lisa norrington Year ago

    what speakers did u used

  • electroumit
    electroumit 2 years ago

    Thank you.

  • Dianne Trussell
    Dianne Trussell 2 years ago

    Marty, how do I connect with you to ask permission to use your video?

  • AA Productions
    AA Productions 2 years ago

    I see in the video, that you used 337.5 Hz
    But it seems from the audio, to be slightly higher, like about 340 Hz

    • AA Productions
      AA Productions 2 years ago

      Actually, I just checked it again, in Audacity this time.
      And guess what I found?
      You moved the frequency about 10 Hz higher, just before the crack!
      And by the way, your ding was exactly 825.6 Hz. That's not even a multiple of either frequency!

    • AA Productions
      AA Productions 2 years ago

      Not a phone, not a phone.
      I measured it in sound forge on my computer.
      But yeah, I guess 2.5 Hz isn't gonna make that much of a difference.

  • Steve Barrett
    Steve Barrett 2 years ago

    Cool stuff! Check out this slow motion wine glass breaking and let me know what you think.

  • Kabilash Satheesh
    Kabilash Satheesh 2 years ago +1

    I've learned this at school! But never seen such a slow motion video!! Great work!!

  • Peter Lustig
    Peter Lustig 2 years ago

    Leftover inertia makes the glass swing ? Wtf? The speaker is still on!

  • zaphr89
    zaphr89 2 years ago +2

    I love physics.

  • Sam Kang
    Sam Kang 2 years ago +14

    Who else is here because their physics professor provided this for learning purposes?

    • Tanya Watson
      Tanya Watson 8 months ago

      My son is in 4th grade and his teacher had the class watch this video, this was great!!

  • Felipe Coelho
    Felipe Coelho 2 years ago

    How slow the slow montion needs to be in order to see the vibrations?

  • Tan Yuksel
    Tan Yuksel 2 years ago

    Soo cool pipi

  • Tan Yuksel
    Tan Yuksel 2 years ago

    Sexy y

  • joshuamurrayful
    joshuamurrayful 3 years ago

    objects that have the same frequency as another object can interact with one another physically, this explains why ghosts can be seen by some people but not by all, its because ghosts operate on certain frequencies and only people who bring down their frequency can see ghosts of the same frequency

    • Daniel Reinhardt
      Daniel Reinhardt Year ago +1

      Wtf made my day 😂

    • BeatFly
      BeatFly 3 years ago

      Do you even know what the word frequency means?

  • L1ttle Legends
    L1ttle Legends 3 years ago +1

    Like for pat Doyle

  • Sam Edgecombe
    Sam Edgecombe 3 years ago +1

    What power speaker were you using?

  • Ekonomist
    Ekonomist 3 years ago +3

    Vay amk

  • Marcelo O VG
    Marcelo O VG 3 years ago +10

    what? is this guy tone deaf? the two tones are obviously not the same! even to my ears, but I put this to a test, I used my SONOMA Hertz analyser and the glass frequency is 1547.7 (both time he hits the glass I get this reading) and the tone producer this man is using is actually 341.8 though on his screen it says 337.5.. when he cranks up the volume the frequency goes up to 347.2 eve though it should stay the same just with higher decibel output.

    • Journey of Curiosity
      Journey of Curiosity Year ago +2

      It could be due to a few different reasons. The points in the process of going from the original to your ears, Eg. The recording microphone, the speaker you're using, and the microphone you're using. Although that shouldn't change it much. It could also be that your Sonoma recording could be showing the harmonics more, and not the base resonant frequency. Then finally It could be because of different edited recordings of this video, and this is put together more for entertainment. Or its bullshit. :P

    • Hhgreg Hhgreg
      Hhgreg Hhgreg 3 years ago +1

      it sounds the same to me. any one else?

    • Ab Muzzy
      Ab Muzzy 3 years ago

      But from what I heard - there were at least three different sounds emitted by the glass

  • Eric Draven
    Eric Draven 3 years ago +18

    So, how do I use this technique to crush my enemies and steal their women?

    • Rahul Kumar
      Rahul Kumar 2 years ago +1

      Eric Draven .make them listen song on headphones at maybe brain shaking frequency
      lol. jst kidding

  • Joey M
    Joey M 3 years ago

    I'm doing a physics experiment and I'm trying to test something through breaking the glasses with a similar method but I'm not sure what brand of crystal glasses to buy that work the best. Any suggestions?

  • DrDress
    DrDress 4 years ago +1

    Damn. Why do they speed up the frame rate!? It looks like that's why it breaks.

  • arrivinglotus1
    arrivinglotus1 4 years ago

    Do sperm whales use sound to hunt giant squids?

    • DrDress
      DrDress 4 years ago

      +Jerome Madridejos
      and spearm...

    • Jerome Madridejos
      Jerome Madridejos 4 years ago

      +arrivinglotus1 No. They use sound to fuck, basically.

  • Acoustic Vibe
    Acoustic Vibe 4 years ago

    couldn't you in theory, break the molecular bonds of any compound with the right frequency? regardless of power?

  • Chris Dodges
    Chris Dodges 4 years ago +3

    So it's like making a girl squirt...finger her hard enough and fast enough and she'll burst too...gotcha!

  • Patrik Kókai
    Patrik Kókai 4 years ago +1

    This whole thing is quiet easy. You have to know the self-frequency of the glass and then generate the same sound that the glass has above 100 dB and it will brake. That's all. :)

    • Indian Einstein
      Indian Einstein Year ago

      Patrik Kókai
      mere knowing is one thing; demonstrating is another thing ! here Marty is the one who took efforts to demonstrate the phenomena to viewers rather than just commenting "quite easy" under the video !! important note: 'break' not 'brake' !

  • Ester Samuels
    Ester Samuels 5 years ago

    why does the glass break? because it's being heat up? it seems to make sense on an intuitive level - the glass can't take the repeated stress, but beyond that, I can't see what the physical explanation is.

    • sasdragonologie
      sasdragonologie 4 years ago

      I feel like you don't even what a sound really is

    • Ester Samuels
      Ester Samuels 4 years ago

      @sasdragonologie Nope. There are different issues within the overall topic of "sonic".

    • sasdragonologie
      sasdragonologie 4 years ago

      and related to what ? sonic = sonic
      same thing

    • Ester Samuels
      Ester Samuels 4 years ago

      @sasdragonologie That sonic weapon isn't related to what we're discussing, I don't think.

    • sasdragonologie
      sasdragonologie 4 years ago

      at your service, have a nice life, avoid extrem waves

  • Sandeep Kapoor
    Sandeep Kapoor 6 years ago

    By installing a very big speaker driven by a mega watt amplifier, you will be able to tune in the resonant frequency of earth and would be able to smash the earth into pieces.

  • wergrethe
    wergrethe 6 years ago +1

    I don't get it. does the loudness break the glass or the resonant frequency break the glass?
    if the sound waves(loudness) can push the glass to break then why need to adjust to its resonating frequency?
    maybe you can do another experiment for everybody to see if the glass can break with loudness in random frequency.

    • Arun Siva
      Arun Siva 4 years ago

      +HaouasLeDocteur So seems higher external amplitude is needed to counter-act any loss of energy in the system (dampening due to air resistance). May be if we put the glass in vacuum/near-vacuum (just letting less/enough air for the sound to travel) may explode at much lower external amplitude? [ie less volume of the speaker]. The point is just like a bucket can be filled drop-by-drop or using a fire-hose... energy can be increased in the system continuously independent of the rate of inflow [just we need to stop/minimize leakage]

    • wergrethe
      wergrethe 6 years ago

      @HaouasLeDocteur yeah, that make sense, absorbing the energy.....thanks.

    • nukedkaltak
      nukedkaltak 6 years ago +5

      Theoretically, yes, it can break if the amplitude of the "force" (here the sound waves) being applied were high enough. But the thing with resonance is that you let the glass absorb that energy (this is easily understood when actually solving the differential equation behind this movement). The amplitude of the vibration rises uncontrollably regardless of the amplitude of the external force being applied (well of course, the amplitude should not be 0 in which case there is no force).
      I'm fairly sure of this although I cannot guarantee it 100% since I'm taking a vibrations course right now and I am yet to finish it :P

  • Vamshi Krishna Beeravelly

    Hey Marty, could you please make another video to show how different levels of water in the glass change this resonance frequency? Employees in our company will be grateful. We make materials and tools for science activities in school.

  • CNWLcanBGrade1
    CNWLcanBGrade1 6 years ago +20

    Great explanation - the sounds waves add energy until the glass breaks. It's like pushing someone on a swing. When you push someone on a swing you add energy. If you add too much energy to the swing then the child will get fucking catapulted.

    • Felipe Coelho
      Felipe Coelho 2 years ago +1

      CNWLcanBGrade1 hmmm almost right. its not about how much energy you add, but at the rate you do so
      its much more effective to push a swing with the right timing than brute force in order to make the poor child fly to its death

    • Cam Wilson
      Cam Wilson 5 years ago +3

      Great analogy, scientific yet hilarious.

  • Darkside Johnny
    Darkside Johnny 6 years ago

    Okay, didn't see the additional comments. Thank you very much for the explanation and answering the vacuum question! :)

  • Darkside Johnny
    Darkside Johnny 6 years ago

    Thanks for the explanation! Although the math is beyond my grasp. But, are you saying that the amplitude of the resonant frequency play a role? Am I kinda on the right thinking process?

  • Muslim604
    Muslim604 6 years ago

    ..... driving frequency, or the sound wave) appears in numerators of A and B. So, there is a direct positive relationship there.
    Also, you're right the experiment wouldn't work in a vacuum since there's no sound in a vacuum :)

  • Muslim604
    Muslim604 6 years ago

    ....... infinity. Of course they never get there because the wine glass shatters :)
    However, this is real life and it never matches theory 100%. There are small inevitable variations in the frequencies, even from wave to wave, which make it impossible for W to "equal" ω. So, all we'll get is A being a "really really small number" and B being a "really really large number." Large enough that the wine glass shatters before even getting to that large number.
    As you can see, F (amplitude of.......

  • Muslim604
    Muslim604 6 years ago

    In my honors physics class in college we used Newtons Laws and Differential Equations to actually derive equation of motion for this:
    x(t) = Acosωt + Bsinωt
    A = [(W^2 - ω^2)*F/m]/[(W^2 - ω^2) + (u^2)(ω^2)]
    B = [uωF/m]/[(W^2 - ω^2) + (u^2)(ω^2)]
    ω = "natural" frequency of glass
    t = time
    W = driving frequency (sound)
    F = amplitude of driving frequency
    u = damping coefficient (caused by friction, drag, etc)
    As W --> ω, A --> 0 and B --> ∞. So amplitude of wine glass oscillations go to.........

  • Darkside Johnny
    Darkside Johnny 6 years ago

    Okay, that sounds better. But this is what I think is going on. That the frequency is dialed, achieving resonance with the glass molecules but is of a higher amplitude, therefore breaking the glass. In essence, disrupting the glass molecules as individuals. If the resonant frequency amplitude was equal, we would see the glass wobble without breaking. The experiment deals with "resonant frequency" and yes atmosphere is involved. Would the experiment work in a vacuum? I don't know.

  • Muslim604
    Muslim604 6 years ago

    It's a "driven damped simple harmonic oscillator" to be precise. So the sound waves are "driving" the glass back and forth.

  • Darkside Johnny
    Darkside Johnny 6 years ago

    No, as a muscian I don't have a clue. Do you know what "resonant frequency" means?

  • Darkside Johnny
    Darkside Johnny 6 years ago

    I disagree, the sound waves are not "pushing" the glass during resonance.

  • CJDownz
    CJDownz 6 years ago

    Definitely the best video depicting a slow-motion glass fracture with a good example of time passing between shattering of the different locations.

  • Paul Lam
    Paul Lam 6 years ago

    That's amazing

  • Angus Linley
    Angus Linley 6 years ago


  • Troy Meadows
    Troy Meadows 6 years ago +1

    What an annoying fucking sound. I'd self destruct if I were exposed to that too

  • tatuhey
    tatuhey 6 years ago


  • gostephane123
    gostephane123 6 years ago

    Hot dude !

  • CapnTates
    CapnTates 6 years ago +1

    yes, that's right. the frequency is determined by it's length, flexibility and mass. if the glass was made of dish ceramics it would be of a different mass and flexibility and thus have a different frequency. with the right frequency you might even be able to break a glass made of diamond if loud enough. the object must be breakable so no soft plastic unfortunately.

  • calihapa
    calihapa 6 years ago

    I don't understand why the glass is not resonant at that certain frequency after it breaks. Is it the physical shape that determines it's resonance initially? If that's the case, doesn't that mean that each individual wine glass or cup or whatever has a different resonance frequency bc of each glass' imperfections?

  • Landon Balk
    Landon Balk 6 years ago

    This is fuckin' cool.

  • cookiez23v23
    cookiez23v23 6 years ago

    Have you even watched this video?

  • megadog103
    megadog103 6 years ago

    And? Doesn't change the fact that I don't think like most of their population. ;)

  • Beep
    Beep 6 years ago

    But.. you're also from the United Kingdom.

  • Payne Snow
    Payne Snow 6 years ago

    Does the glass break when the driver frequency matches the natural frequency of the glass or when the driver frequency exceeds that of the natural frequency?