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Thread: asymmetrical capacitor

  1. #1 asymmetrical capacitor 
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    I know they operate on an ion wind generation of force, I'm just curious how to determine what the force is for a given configuration and voltage/current. Any help in my understanding would be appreciated.


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  3. #2  
    . DrRocket's Avatar
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    Quote Originally Posted by Arcane_Mathematician View Post
    I know they operate on an ion wind generation of force, I'm just curious how to determine what the force is for a given configuration and voltage/current. Any help in my understanding would be appreciated.
    The principle and even the magnitude of any force seem to be very poorly understood.

    http://arxiv.org/ftp/physics/papers/0211/0211001.pdf

    http://gltrs.grc.nasa.gov/reports/20...004-213312.pdf

    Skepticism is in order.


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    Much better than the majority of what I could find. Everything except the nasa report that came up on google was either about proving or disproving whether or not there is an anti-gravity effect, which didn't really leave much explanation for the phenomena to be had. Thank you though.
    Wise men speak because they have something to say; Fools, because they have to say something.
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    Forum Bachelors Degree PetTastic's Avatar
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    The first photo in the first paper is the lifter device they tested on the MythBusters TV program on the Discovery channel.It left the table and hovered, but was just pushing ionised air downward to generate thrust.Did look cool thow.My a-level physics project 30 years was on similar devices.
    I believe in nothing, but trust gravity to hold me down and the electromagnetic force to stop me falling through
    Physics is the search for the best model not the truth, as only mythical beings know that.
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    Quote Originally Posted by PetTastic View Post
    The first photo in the first paper is the lifter device they tested on the MythBusters TV program on the Discovery channel.It left the table and hovered, but was just pushing ionised air downward to generate thrust.Did look cool thow.My a-level physics project 30 years was on similar devices.
    Yes, this is about the lifter's that have a massive gathering in youtube videos. Could you explain the gist of how they work to me, since Mythbusters and the other serious resources I've been able to get a hold of don't seem to be able to coherently explain the forces at work and how they're calculated?
    Wise men speak because they have something to say; Fools, because they have to say something.
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    Forum Radioactive Isotope MagiMaster's Avatar
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    Mythbusters did explain the forces at work, it a general way. The wiring generates ionized air, which is accelerated towards the foil, taking regular air with it, generating enough lift to lift the very light machine up. Take away the air and it stops working (thus, no anti-gravity).

    Calculating the exact lifting force is something else, and it's possible no one's done that.
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    Forum Bachelors Degree PetTastic's Avatar
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    Thirty odd years ago at school, as far as I remember the efficiency of those devices was incredibly bad.I got best results by using wire from a light bulb filaments around the top above the foil, but still only got airflow, not take off.The school HT power supply could not provide enough current.5Kv across a needle pointing into short metal tube gave much better results, it could cut paper at 2 inches.Using a hyper dermic needle attached to a insulated beaker of water, was fun as well.Not recommend as something to try at home I still have a dip in the side of my thumb.
    I believe in nothing, but trust gravity to hold me down and the electromagnetic force to stop me falling through
    Physics is the search for the best model not the truth, as only mythical beings know that.
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