Added: 2 years ago
From: morpher44
Views: 5,287
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  • hey im judah hendershot my gradpa made invented the coil

  • @JustGraf

    They should make a movie about his life. Its a cool story.

  • I am looking forward to checking out the sight for your notes, I do have my other brother here but he could careless funny huh anyway i really enjoy your show...

  • Wrong impression sir.. I would never ask for your notes or anything written from you I understand how this must work for the sake of normal life on You Tube ... anyway thanks my other brother is here bye for now...mjh

  • I am on line at this time so send me past notes , I have a reason for this , please take the time if you have a record of them in your e-mail to me... I want to forward them to my brother... mjh

  • Anything of interest that I find I try to video and post on youtube.

    My personal notes are horrible scribbles with doodles and lousy handwriting ... and streams of consciousness. No focus. They wouldn't contribute anything really.

  • I am putting some notes on energeticforum - renewable energy / "coilpacitor" thread.

  • I have a new observation re: the Hendershot Coil

    Since the coil is wrapped around a capacitor, with material

    that is very diamagnetic (my case aluminum foil),

    the Nagaoka coefficient is NOT that of AIR.

    Hence, the formula for a cylindrical coil needs to have

    a Nagaoka coefficient that is something on the order of .2 downto .1.

  • with hand-made stuff, temperature changes, etc. the inductance and capacitance can change, altering the resonant frequency. I am bare foot. By touching it, I can convey charges on to various surfaces. If the radio is dialed to the correct frequency, I can hear the sound when I touch the metal surfaces.

  • very interesting, dad loved radios, were you putting pressure on the coil with your hand or were you just feeling it, dad used pressure remember with the c-claps to trouble shoot his device, i love the eye of God as i would call it He has a great sense of humor, i would like to see the new stuff from the hubble since they repaired or added, adjusted it recently, keep up the work as you have time, it is getting more fun each time you post something new for us all i can't wait to share this....MJH

  • Ok. I'm on to something perhaps.

    If your dad originally used coffee cans, they are highly magnetic -- high permeability.

    The materials says he switched to stainless steel. Do you recall if a magnet would stick to these cylinders, or where they non-magnetic?

    This is important to figure out the frequency he was tuning for.

  • dad used whatever he could get his hands on, i personally find it hard for him to afford s/s tubes of a certain size... in the work I used to do s/s was very expensive I can only imagine the cost back then, but he used cans, I believe coffee cans, I don't believe they had ripples on the sides then, which made the sides smooth, there were cans inside the coil I remember that, perhaps he used them to keep from ruing the inner wrap when c-clamp pressure was applied, he used the clamps to trouble

  • At the grocery store I was looking at coffee cans and noticed an Italian brand that had no ripples - smooth cylinder. So they still can be found.

  • looking at the video, made of the material layed on the floor looks very much like the stuff dad used as far as watching a magnet grab the surface of the can I do not remember seeing that, boy i wish we could use a phone but like I said I realize the problems, no phone just makes it slower for me, confusing too, you are on to something by the looks of it, what you are putting together etc I was shocked somewhat to see what you had done as dad used stuff he could get his hands on then sparingly

  • Ok. I'm leaning toward the idea that his cylinder was magnetic -- which a high permeability ... say 3000 or higher. With a 14-turn primary coil and 7.8nF cap, that puts him down in the audio range. So I suspect he was tuning for the Earth's field NMR.

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