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Nobody here can explain the Leedskalnin discovery

  1. Jun 3, 2015 #1
    I posted a thread here about Ed Leedskalnin's discovery of an electromagnet which works after the power has been cut off. The forum deleted it and gave the reason "crackpot video". The video I linked simply showed the discovery that I mentioned. It was hardly a "crackpot video". In fact, as I stated in the post, anyone can easily replicate it themselves. Did the person who deleted the post do that? No, obviously not. So why did they label it a crackpot video? The answer is extremely obvious; no physicist on earth can explain that effect. Now I predict that the same person will delete THIS post, again for an arbitrary trumped up excuse. What exactly are you so afraid of that you would actually delete posts to avoid addressing the issue? I don't see any video links in this post so I guess the crackpot video excuse won't work this time. What are you gonna do now, ban me from the forum for raising questions that you are apparently incapable of explaining? That will actually amuse me and make me say "nice, I stumped an entire physics forum and their only course of action to avoid admitting it was to silence me" Hahaha. Physicists, huh? Funny.
  2. jcsd
  3. Jun 3, 2015 #2

    ^ That is probably the reason it got deleted.

    Build a commercially viable version of your magnet, and you'll make a gazilion dollars. See you in 20 years.
    Just because a guy has a Slavic name and died more than 50 years ago, doesn't make his theory any more valid. (yes, I took a jab at Tesla, in case you didn't notice)
  4. Jun 3, 2015 #3
    Watch your mouth please.
  5. Jun 3, 2015 #4
    The problem is, it's not Tesla's fault really. Both Tesla and this Leedskalnin guy lived in a time where electricity and magnetism were virtually unexplored territory. Many things were tried, many things were postulated. And many things turned out to be flat wrong. Now, as (I think) Dirac once said "Science advances one funeral at a time", neither Tesla nor Leedskalnin would change their minds before their death. This behavior has haunted the greatest scientists across time, including Einstein.
    It's just that Tesla and this guy have a following of conspiracy theorists who are at the same time really, really weak in their understanding of physics. Their desire to believe in a conspiracy far outstrips their desire (or ability) to educate themselves about the matter, and especially what has been learned theoretically in the last 100 years.
  6. Jun 3, 2015 #5
    My point exactly. It shouldn't work, according to the current laws of physics, and yet it does. All you have to do is make the thing yourself and you'll see what I mean. It's easy to find videos on YouTube that show you how. I won't link them of course, because the forum guy will then delete the post for no valid reason. It's been replicated by many people. I've done it myself. So here is my challenge; make the device and then get back to me with the results. Are you equal to the task?
  7. Jun 3, 2015 #6
    I have no desire to try out things that I know through my education won't work, just like I have no desire to build Youtube-based antigravity devices.

    Again, build it, commercialize it, make a gazillion dollars. I'll leave all the glory and money to you. Why do you even care what a physics forum thinks about you, when you think you stumped us all?
  8. Jun 3, 2015 #7
    If you mean that locking thing, it has been explained many times.
  9. Jun 3, 2015 #8
    In regard to what? I don't see a quote here of anything offensive. I'm not that good at guessing.
  10. Jun 3, 2015 #9
    Not you, it was a joke for the previous post.
  11. Jun 3, 2015 #10
    Okay, please explain it again right now because I don't see any text in your post doing so or any links to anything that does. Am I supposed to just accept your word for it?
  12. Jun 3, 2015 #11
    Okay, sorry.
  13. Jun 3, 2015 #12
  14. Jun 3, 2015 #13
  15. Jun 3, 2015 #14
    Lol, just read the Wikipedia page on the guy.

  16. Jun 3, 2015 #15
    Well, not so wrong actually. Think about free electron pairs.
  17. Jun 3, 2015 #16
    Nah, sorry. Plain and simple, the guy had absolutely no clue what he was talking about. And that was fine in those days, as a lot of people were just building contraptions in their homes to investigate those newfangled electric currents and their effects.
  18. Jun 3, 2015 #17
    Didn't see anything on that page that seems to relate to this. I can show you a video right now where a guy made the device as Leedskalnin wrote in his little book. It was a U shape made of 1.25" square iron bar, each prong about 1 foot long. Two coils, one on each prong. He put the same type of bar across the prongs, energized the coils for about 1 second with a regular 9 volt battery and put it on a spring scale to see how much force was required to pull the bar off the prongs, with no power conneceted whatsoever. It took about 60 lbs of force. How do you explain that? How can 1 second from a 9 volt battery produce that kind of force after disconnected?
  19. Jun 3, 2015 #18
    a) Lentz's law
    b) residual magnetization
    c) Magnetic fields can result in very strong forces when applied over a large enough area
  20. Jun 3, 2015 #19
    Come on, I gave you the keywords just use ctrl+f.

    Or look at this:


    By magnetic "circuit" it is meant that the flux is "trapped" in the metal since it has high permeability.
  21. Jun 3, 2015 #20
    By the way, it is not an electromagnet that works without energy supplied, it is just a permanent magnet now until the "circuit" is broken.
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