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Category: Science
Date: 08/02/12 08:10 AM

14 Responses to What The Strings Of An Upright Bass Looks Like

  1. Profile photo of fancylad
    fancylad Male 30-39
    18410 posts
    August 2, 2012 at 7:22 am
    Link: What The Strings Of An Upright Bass Looks Like - Whoa, wobbly!
  2. Profile photo of 8BitHero
    8BitHero Male 18-29
    5414 posts
    August 2, 2012 at 8:31 am
    And then I-A-B shines...

    It doesn`t actually wobble, it`s more of an optical illusion
  3. Profile photo of 5Cats
    5Cats Male 50-59
    30867 posts
    August 2, 2012 at 9:10 am
    I had NO IDEA they did that! I thought there was just one big wobble from top to bottom, not a bunch of little wobbles along the way...
  4. Profile photo of Ilikelogic
    Ilikelogic Male 40-49
    550 posts
    August 2, 2012 at 9:29 am
    Don`t know enough about wavelengths on string instruments, but i would think it`s a question of the scanning rate of the camera creating this illusion, so i go with 8BitHero
  5. Profile photo of edana42
    edana42 Female 50-59
    2510 posts
    August 2, 2012 at 9:38 am
    Ooops.. thought you meant this:

  6. Profile photo of Mikeoxsbiggg
    Mikeoxsbiggg Male 30-39
    1503 posts
    August 2, 2012 at 10:13 am
    8BitHero is right. They vibrate really fast so it`s just an optical illusion. You normally don`t see it because you have to get close and have a lighter more distant background. Any stringed instrument will do this. A violin you might not see wobbles as much vs an upright bass.
  7. Profile photo of whodat6484
    whodat6484 Male 30-39
    3902 posts
    August 2, 2012 at 11:44 am
    Pretty much all stringed instruments do that, you just can`t see it with the naked eye because it`s vibrating so fast. This reminds me of the video for Pantera`s "5 Minutes Alone"
  8. Profile photo of DFWBrysco
    DFWBrysco Male 40-49
    307 posts
    August 2, 2012 at 2:30 pm
    8Bit and Whodat are both correct - this is a matter of the camera as well as an optical illusion.

    The stringed instrument family of violin, viola, bass and cello are strung at approximately 1600 lbs of pressure per square inch, resonating at 200hz to 3.5khz for violin, 125hz to 1.5khz for viola, 63hz to 630hz for cello and 40hz to 200hz for bass.

    At these frequencies, it is impossible to follow the actual movement of the string without a Phantom camera, for the most part, but still - awesome video.

    And yes - I was a music nerd playing these instruments for 35 years... ;-)
  9. Profile photo of uatme
    uatme Male 18-29
    1068 posts
    August 2, 2012 at 5:38 pm

    Aliasing Sines
  10. Profile photo of kemic
    kemic Male 18-29
    164 posts
    August 2, 2012 at 6:52 pm
    its called hertz
  11. Profile photo of PTPete
    PTPete Female 30-39
    1236 posts
    August 2, 2012 at 8:54 pm
  12. Profile photo of OldOllie
    OldOllie Male 60-69
    15845 posts
    August 2, 2012 at 10:18 pm
    A video is just series of still images at ~24 frames per second. If the exposure time for each image is short enough, it can freeze a moving object without blurring it. When the frame rate is near an even factor of the frequency of the vibrating string, it can appear to slow down or even stop. It`s the same phenomenon seen in old western movies when the stage coach wheels appear to be turning backwards.
  13. Profile photo of oldallen671
    oldallen671 Male 30-39
    23 posts
    August 3, 2012 at 5:05 am
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  14. Profile photo of MacGuffin
    MacGuffin Female 30-39
    2602 posts
    August 3, 2012 at 11:29 am

    Need some more sticky tape, guys?

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