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  • AK-47 Underwater at 27,450 frames per second (Part 2) – Smarter Every Day 95 – Smarter Every Day 97

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    In which Destin uses an AK-47 to teach you the Physics of cavitation.
    Tweet this: http://bit.ly/AK47inPool
    Post to Facebook: http://bit.ly/AK47Pool

    http://twitter.com/smartereveryday

    See TheSlowMoGuys video here: http://youtu.be/OubvTOHWTms
    I’ve been subscribed to them for ages. I recommend you do the same!

    http://www.youtube.com/theslowmoguys

    Song “Baiji” by A Shell in the Pit – Download here: http://ashellinthepit.bandcamp.com/track/baiji

    Slow Motion Sound Design by Joey Van Alten http://joeyvanalten.com/

    Diagrams created by Larom Lancaster as part of his personal creativity experiment

    http://thelarom.tumblr.com/

    We used 2 high speed cameras in this video. Both were made by Vision Research:

    I the stuff above water level with a Miro LC310

    http://www.visionresearch.com/Products/High-Speed-Cameras/Miro-M310/

    Gavin shot all the stuff below water with the V1610

    http://www.visionresearch.com/Products/High-Speed-Cameras/v1610/

    If you’re a nerd, read these wikipedia articles:

    http://en.wikipedia.org/wiki/Bernoulli’s_principle

    http://en.wikipedia.org/wiki/Rayleigh%E2%80%93Plesset_equation

    The awesome bullet photo was created on a huge piece of film via direct shadowgraphy by Andrew Davidhazy. Thank you for the phone call Andrew.

    http://people.rit.edu/andpph/

    And of course, a huge thank you to Jimmy Neutron for letting me shoot in your pool. The conversation on the phone went like this:

    Neutron: Franks Fish Farm
    Me: Hey… it’s me
    Neutron: What’s up?
    Me: (pause) Can I shoot an AK-47 in your swimming pool?
    Neutron: (Long Pause)….. Yes……… (Longer Pause)
    Me: (Silence, letting him rethink his answer)
    Neutron: (Pause) The reason I said yes, is because I realize you would not ask me such an absurd question unless you had already done all the calculations and research to determine you could accomplish it safely.
    Me: You are correct. I can do it safely.
    Neutron: Ok then, when do we shoot?
    Me: (hangs up phone, says to self) I love Alabama.

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    Tweet ideas to me @SmarterEveryDay

    Instead of saving for my kids’ college, I make videos using the money I would have saved.
    The thought is it will help educate the world as a whole, and one day generate enough revenue to pay for their education. Until then if you appreciate what you’ve learned in this video and the effort that went in to it, please SHARE THE VIDEO!

    If you REALLY liked it, feel free to pitch a few dollars towards their college fund by clicking here:

    http://bit.ly/KidsCollege

    Warm Regards,

    Destin

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