How to Survive a Grenade Blast

author Mark Rober   3 год. назад
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Snowball Machine Gun- How to make

Here's how to make a Snowball Machine Gun that can fire 13 snowballs in .5 seconds. It's a must have in any self-respecting Uncle's arsenal. FREE Audio Book- http://bit.ly/AudibleMarkRober Build Instructions here- https://www.dropbox.com/s/15thdctic6rr4a2/Snowball%20machine%20gun-%20Build%20Instructions.pdf?dl=0 MUSIC- 0:05- Run (part 2)- Andrew Applepie- https://soundcloud.com/andrewapplepie. https://www.facebook.com/andrewapplepie 0:19- Angel- Sarah Mclachlan 3:12- Ghostbusters remix- Danijel Zambo- https://www.youtube.com/watch?v=55SKKatQaD8 5:16- Special song written just fo my bad self- Lincoln Hoppe, http://lincolnhoppe.com/ 6:05- Berlin- Andrew Applepie- https://soundcloud.com/andrewapplepie https://www.facebook.com/andrewapplepie PLEASE CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub ****************************************­ I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube FACEBOOK ME: https://www.facebook.com/MarkRoberYouTube FOLLOW ON TWITTER: https://twitter.com/#!/MarkRober

BARE HAND Bottle Busting- Science Investigation

Kevin and I get to the bottom of a science mystery using only our wits and rugged good looks. FREE Audio Book- http://bit.ly/AudibleMarkRober Ready Player One Check out Kevin's channel- https://www.youtube.com/user/TheBackyardScientist Thanks to Nathan for the High Speed camera. If you need a High Speed camera to rent for super cheap check him out. Insanely low prices for great gear- http://www.aimed-research.com/ MUSIC- 0:12- Ceral Killa- Blue Wednesday- https://soundcloud.com/bluewednesday 4:19- Berlin- Andrew Applepie- http://www.andrewapplepie.com/ Summary: Using the Scientific Method and with the help of the Backyard Scientist, we determine how someone can break a glass bottle with their bare hands. PLEASE CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub ****************************************­ I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube FACEBOOK: https://www.facebook.com/MarkRoberYouTube TWITTER: https://twitter.com/#!/MarkRober INSTAGRAM: https://www.instagram.com/markrober/

FLYING PHONE SCAM EXPOSED (so I built a REAL one)

Don't mess with my people. Go to https://wix.com/go/MarkRober to get started on your Wix website! ALSO, see how I make all my builds: https://markroberbuildinstructions.com Captain Disillusions's video: https://youtu.be/PI4EszMsYy4 Peter's build video: https://youtu.be/ASYGnaQ9sHI Camera man credit: Luke Hale MUSIC- 0:02 New Shoes- Blue Wednesday -https://soundcloud.com/bluewednesday/ 1:25 Tomorrow- Andrew Applepie- http://andrewapplepie.com/ 2:11 Arrow- Andrew Applepie - http://andrewapplepie.com/ 4:05 Berlin- Andrew Applepie - http://andrewapplepie.com/ 10:29 Blue Wednesday - https://soundcloud.com/bluewednesday/ 11:26 Too Happy to be cool by Notebreak- https://soundcloud.com/notebreak/dubstep-too-happy-to-be-cool Summary: I saw this video on Twitter and YouTube recently of a guy who modified his phone case with propellers. Having a background in engineering it was pretty clear to me that it wasn't real but it seemed like most people believed it. This was especially irksome give that he was selling the items in the desc using affiliate links. So I did a deep dive on every last possible clue proving it was fake. MERCH- They are soft- https://teespring.com/stores/markrober PLEASE CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub ****************************************­ I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube FACEBOOK: https://www.facebook.com/MarkRoberYouTube TWITTER: https://twitter.com/#!/MarkRober INSTAGRAM: https://www.instagram.com/markrober/

World's Largest Horn Shatters Glass

I might upgrade my car horn to this. Shoutout to Portal from Facebook for their support on this video. Learn more and get yours at: https://portalfb.me/2OG9U7j Watch the What's Inside video here: https://youtu.be/d9tA1icDPGY Here is a behind the scenes video from the day: https://www.youtube.com/watch?v=rJIc1iAQdPw High Speed camera courtesy of https://www.aimed-research.com/. They rent high speed cameras at killer prices. Hit them up. ELI20 version: I answered why you want a large outlet area but not necessarily why it curves like that. Anytime you have a sudden change in cross-sectional area in the horn you will get waves reflecting back at the source. You don't want that because that is wasted energy that could have moved forward. Even if it goes from a small cross-section to a larger, if you do it suddenly you get those wasted waves. So you want the horn to basically be asymptotic at the exit so you never have a jump in discontinuity when it exits to the wide open air. So a directors cone isn't as good as the curved shapes I showed because it still has the sudden change when it dumps into the open air. MUSIC- 0:10- Arrow- Andrew Applepie - http://andrewapplepie.com/ 1:08- Dance- Danijel Zambo- https://danijel-zambo.bandcamp.com/ 2:00- Kalimba Jam- Blue Wednesday - https://soundcloud.com/bluewednesday/ 3:00- New shoes- Blue Wednesday - https://soundcloud.com/bluewednesday/ 7:30- Ceral Killa- Blue Wednesday - https://soundcloud.com/bluewednesday/ 8:47- Q- Blue Wednesday - https://soundcloud.com/bluewednesday/ 9:46 Too Happy to be cool by Notebreak- https://soundcloud.com/notebreak/dubstep-too-happy-to-be-cool Summary: I made a huge horn and broke glass with it and explored why horns are shaped the way they are. MERCH- They are soft- https://teespring.com/stores/markrober PLEASE CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub ****************************************­ I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube FACEBOOK: https://www.facebook.com/MarkRoberYouTube TWITTER: https://twitter.com/#!/MarkRober INSTAGRAM: https://www.instagram.com/markrober/

Pouring Molten salt into Water - Explosion!

Backyard Scientists T-Shirts! https://outloudmerch.com/collections/backyard-scientist What we made - Exploding Salt https://www.youtube.com/watch?v=lreob7RYhpM High Speed camera rentals - http://www.aimed-research.com/ Molten Salt Explosion paper #1 http://digital.library.unt.edu/ark:/67531/metadc282701/ Molten Salt Explosion paper #2 http://ufdcimages.uflib.ufl.edu/AA/00/00/03/83/00060/AA00000383_00060_194.pdf Related paper on aluminum explosions http://ufdcimages.uflib.ufl.edu/AA/00/00/03/83/00059/AA00000383_00059_108.pdf My facebook :https://www.facebook.com/TheBackyardScientist

Just some helpful science if you ever find yourself face to face with a grenade :)

FREE Audio Book- http://bit.ly/AudibleMarkRober

CHECK OUT THE BACKYARD SCIENTIST: https://www.youtube.com/watch?v=Sl0BHueSjvA

Thanks to Nathan for the High Speed camera. If you need a High Speed camera to rent for super cheap check him out. Insanely low prices for great gear- http://www.aimed-research.com/

Really good paper on why jumping into the pool is a much worse idea than the pool deck: http://www.scuba-doc.com/uwblast.html



MUSIC-
2:00- Berlin- Andrew Applepie- http://www.andrewapplepie.com/
4:40- I’m So- Andrew Applepie- http://www.andrewapplepie.com/
5:00- Apple pies and butterfly's- Blue Wednesday- https://soundcloud.com/bluewednesday/apple-pies-butterflies





PLEASE CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub

****************************************­

I make videos like this once a month all year long while supplies last:

CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube

FACEBOOK: https://www.facebook.com/MarkRoberYouTube

TWITTER: https://twitter.com/#!/MarkRober

INSTAGRAM: https://www.instagram.com/markrober/

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