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






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

Rob Kueffner coded the equations in LaTEX for me in a jiffy.

And of course, a huge thank you to Jimmy Neutron for letting me shoot in your pool.
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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:
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Warm Regards,

Destin

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24 thought on “AK-47 Underwater at 27,450 frames per second (Part 2) – Smarter Every Day 97”

  1. So we see the bullet has less travel when shot under water, would it have the same effect if shot from outside the water so it has more chance to get its full spin and no slow down on it before exiting the barrel.

  2. I don't think the bubble regrows because of the pressure of the outside or inside of the bubble,It cause because the bullet weave makes a 0 place under the water by pushing the water surface and when all water comes to fill the 0 place they come with a great force and hit in a spot and create an energy surface and Bigbang they are forced back because every single atom has a area when they started to Repulsion one another and thats why they make another little little 0 spot.

  3. Дибилы! Где автоматическая стрельба? Нахуй им автомат, если стреляют чисто одиночкой??? Дебилыреально!

  4. You haven't EARNED my subscription yet … but you did EARN a dislike (even though i enjoyed the video) because of the constant annoying begging you are doing 🙂

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