Electromagnetic Force Fields VS. Magnetic Cannonball

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  • Published on:  Wednesday, February 28, 2018
  • This video tests a question: can induced magnetic fields in copper stop a magnetic bullet? Get a free audiobook through my sponsor Audible by signing up for a free trial here: http://audible.com/nighthawk Or by texting the code 'nighthawk' to number 500-500.

    I hope you enjoy this video, this was a fun one to test. Dozens more comments came in on my last video about this subject while I was filming so I hope this answers some questions. Thank you to my Patreon supporters to continue to make these videos happen! A special thanks to my top Patrons: Syniurge, Matthew Leitzke, TheBackyardScientist, Enzo Breda Lee, John Johnson, & Thibaud Peverelli! https://www.patreon.com/NightHawkProjects
  • Source: https://youtu.be/xUqbcpQqxhg


  • lil Chiller

    lil Chiller

     7 days ago

    Did you check if the projectile was magnetic afterwards? Every kid knows heat and convulsions weaken the magnetic forces.

  • Vedrfölnir


     14 days ago

    You should make a collab with Jorg Sprave. Slingshots vs electromagnetic shields would make up for good content :D

  • Treshon Hayes

    Treshon Hayes

     14 days ago

    Look up super conducive levitation.... doesn’t the copper just smoothly slide the projectile along. Maybe fire directly at the copper instead of parallel to it.

  • Miketh Glover

    Miketh Glover

     28 days ago

    I would just like to say that ik a lot about guns and also magnets and I know that magnets lose their properties whenever they are heated up to a certain temperature and I know that shooting a magnet out of a gun / Canon would most likely reach those temperatures that's most likely why it didn't stop in the copper pipe the heat generated from the Canon made the magnet lose its properties so the copper had little too no effect on the magnet

  • Patrick Ryan Agapito

    Patrick Ryan Agapito

     28 days ago

    What if you have spark plug on acrylic rod?

  • Best Ever

    Best Ever

     28 days ago

    Could you do the experiment with a copper disk like at the beginning of this video but cut a slot going down to a hole in the center so your pendulum magnet can swing through will it stop like if the disk was whole it would be a better visual than the Canon I believe

  • King Freedom

    King Freedom

     1 months ago

    Love this stuff .

  • Spiritual Entrepreneurs

    Spiritual Entrepreneurs

     1 months ago

    Well thanks for showing how it doesn't work now to find out how it does work

  • Demeter Ákos

    Demeter Ákos

     1 months ago

    Pipe wall thickness??? It seems rather thin. Does it matter?

  • Savonyé Dubay Bear

    Savonyé Dubay Bear

     1 months ago

    Dude all you needed was a $5 laser pointer to get the aiming accurate......



     1 months ago


  • jocko Ferguson

    jocko Ferguson

     1 months ago

    youre not considering the heat from cumbustion demagnetizing the projectile
    did u check?

  • Roger Arnold

    Roger Arnold

     1 months ago

    Dude, you need to brush up on your E & M!. Shooting a magnet between parallel plates will do almost nothing to slow the magnet. And cooling the copper to make it more conductive only makes it worse.

    When a magnet moves rapidly across a conducting plane, it induces currents in the plate that create an opposing field. But the force from that induced field is normal to the surface. It will try to keep the magnet away from the surface, but it won't slow it down.

    That's not the full story, however. In fact it IS possible to stop your magnetic bullet shot between two parallel plates. But you have to go the opposite way you were trying to. Reducing plate resistivity reduces induced heating in the plates You want to MAXIMIZE induced heating. That's where resistance to the bullet's passage has to arise. You should experiment with thinner and more resistive plates. There's a theoretically perfect resistivity (depending on strength of the magnets and distance from the conductive surfaces) where electromagnetic drag is maximized. If you can get the right value, your audience will be treated to slo-mo video of the bullet/magnet traveling between two films of aluminum coated paper and dragging a wake trail of vaporized aluminum as it slows.

  • Bad Samaritan

    Bad Samaritan

     1 months ago

    How much makeup do you put on? You kinda look like one of those porcelain Santa Claus'

  • Undertoker-UK


     1 months ago

    Lathe would have been so much easier

  • Carmine Russo

    Carmine Russo

     1 months ago

    Great space craft tripod landing suspension

  • Joe ASU

    Joe ASU

     1 months ago

    Should use a thick aluminum pipe instead.

  • Yasser Lamamri

    Yasser Lamamri

     1 months ago

    good worke thinkyou very mutch

  • movAX13h


     1 months ago

    Reverse railgun.

  • Satya Sarma

    Satya Sarma

     1 months ago

    you need to calibrate proximity of the object to the copper surface. Resistance is highest at closest to copper surface. But , cylindrical has least resistance at axis and probably bullet is bouncing to center just as light does in Optical fiber. All your bullet-tests are not pushing the bullet towards to copper surface and is reflected away from closest approach.