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  • david lambright
    replied
    a video

    YouTube - oxide core PMH device .....david

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  • Harvey
    replied
    Originally posted by david lambright View Post

    Hi David,

    I see a reflective curved pipe back there up against the wall behind the 2x4 posts - that is the secondary focus point.

    But the other two reflections, one below the ring and slightly forward and one behind it slight upward - those are lens reflections. You can eliminate those by lighting your ring from behind instead of in front.

    The copper ring artifact is very nice - I've seen this phenomenon even with the naked eye. Easy to do, just bring a narrow object up to your pupil while focusing on a pattern in the background - you get the same type of effect.

    Cheers

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  • david lambright
    replied
    video

    YouTube - OC device in IR light and YouTube - lambrights oxide core device ....david

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  • Harvey
    replied
    Well today I decided to build a qty 12, 2 turn parallel coil rig and see if I could get the lock to hold well enough for a non-constrained demonstration.

    The results were disappointing. Some of the elements simply do not magnetize well at these low flux levels and without the physical contact pressure they don't even hold against a vertical lift - some do, but as soon as those weak ones slip the lock is lost.

    This lead me to experiment with some permanent magnets and see how well the elements hold with a continuous flux source. This would give me some basis in ampere-turns to evaluate what would be needed to enable a PMH lock capable of the desired demonstration. I'll have to sort that all out.

    But suffice it to say, that these elements I have will not remain physically locked on their own magnetism without a very large flux density and even then it is debatable. But I will see what is needed and test the feasibility of performing the demonstration if possible.

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  • david lambright
    replied
    hi...

    i do not know about those videos.....they really do not show anything...although i do sometimes see light reflecting off of the inside of the devices where there is nothing to reflect off of.....i am still working a better vid.....david

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  • Harvey
    replied
    Originally posted by Cloxxki View Post
    David, I've never seen anything like it, wow.
    Light interacting with a "web-like" density inside the ring?

    This seems a bit more complicated than the light of a street light making large spikes of light on an image, or the eye.

    Would you please offer some setup comments on what we're looking at, and the light that was used for the recording?
    I had to review that 'web' about 50 times before I got a real handle on what I was seeing. The motion of the ring is waaaaaaaaaaaay too fast for this type of analysis. David, can you redo a video with much slower motion, gradual changes in position of the ring? That would be very helpful to see the effect.

    The 'web' is a composite of lens glare and background shadows. It is quite obvious once you realize that it is the reflections off the ring that are interacting with the the secondary and tertiary lens producing the fainter and slightly displaced bright spots that move with the ring.

    Also, there is some sort of shiny material like prism tape on the bunk rail that at one point comes into very good focus and gives us many different colors.

    The ring shadow on the background is a huge shadow, so the light sources are very close to the ring - I see what looks like three sources in the video two near the camera and one from the left. But one could be a single lamp reflecting of the ring and reflecting again off the lens giving the multiple shadows.

    Curiously though, on some of the frames there are faces that emerge in the darkness the most obvious resembles a cowboy with a pipe positioned at the corner post. You may have to turn up your monitor brightness for these images:

    zoom

    Zoom

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  • david lambright
    replied
    hi...

    the light is infrared and incandescent....the tubing is i/4" OD aluminum...i do not know why the image keeps jumping around...i think it might be the image stabilization feature....i am uploading a new one now...david........ YouTube - oxide core device #2 .........new video...david
    Last edited by david lambright; 09-19-2010, 12:17 AM.

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  • Cloxxki
    replied
    Originally posted by david lambright View Post
    here is a new video YouTube - oxide core device ...david
    David, I've never seen anything like it, wow.
    Light interacting with a "web-like" density inside the ring?

    This seems a bit more complicated than the light of a street light making large spikes of light on an image, or the eye.

    Would you please offer some setup comments on what we're looking at, and the light that was used for the recording?

    Leave a comment:


  • Cloxxki
    replied
    Originally posted by Harvey View Post

    Probably what would be convincing would be to have the ring locked without the straps. Now that would be a good show to do eh?
    I think that can be done. At least when the required coating on the metal can be applied after shaping the 24 parts. I'd have one slight indented sleeve matching the surface of the adjacent part, in each. This would multiple contact surface by a huge factor. I the parts could be CNC'd it'd be easy. Else, the donor pipe would require to receive such an indent along its length.

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  • david lambright
    replied
    hi...

    here is a new video YouTube - oxide core device ...david

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  • Harvey
    replied
    @Loadstone,

    No worries mate - nothing wrong with being skeptical

    You are right, there is a fine distinction between the locked and unlocked configuration and it is very difficult to see but quite obvious by feel. The resistance to separate the elements when they are 'bound' as you say, is about 10 times less than when they are locked as well. There is a noticeable magnetic attraction between the elements and it takes more force to break that attraction that it does if it isn't there.

    You will notice that I inserted some paper to specifically gap the removed element and prevent the possibility of the system somehow re-locking. The elements do seem to have some magnetic hysteresis and they could stick back together. The longer they stay that way, the stronger the flux can become. It is similar to the keepers used on Alnico magnets - as long as the path is there the domains stay aligned and the strength of the magnet remains up. The paper has a higher permeability than the metal and so this helps to ensure that the unit does not re-lock. Another way to help prevent that is to flip the element over so than any residual magnetism is in opposition thus preventing the lock.

    Probably what would be convincing would be to have the ring locked without the straps. Now that would be a good show to do eh?

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  • Loadstone
    replied
    Harvey,
    First, I mean no offence by saying skeptical things.....
    I watched your vid but didn't see anything showing a possible lock of ANY kind, because everything was already bound. It is quite possible you just found a loose one that was not bound properly.

    I understand many people have seen "something" in devices, but I can see "something" radiating from any object in certain situations, and there are many optical events most people probably don't even know about.
    I think that before any conclusions are considered it would be wise to rule out everything else.

    For me personally, I remain interested but skeptical.

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  • Harvey
    replied
    Hi David,

    Just a quick link to the graphics
    Simon David Eden MA Dist. [RCA] : Codagraphs #1

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  • woopy
    replied
    Last edited by woopy; 05-16-2011, 09:34 PM.

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  • david lambright
    replied
    harvey...

    thanks...you explained that very eloquently....the oxide provides a flux path also, and the oxide 'gives up its magnets easier than the iron does....when an oxide core device is energized, an orbit is started through the flux path....manganese oxide, i have read, works well if not better than the iron oxide, at least for recording anyway .....i am going to try mixtures of oxide and powdered metals to see if i can get a greater visible output with these devices.....the FACT that this energy can be SEEN at all is amazing to me....it allows us to see what this radiation is doing, the shapes it likes to make etc. etc.....i believe this is called by many names....i know that it is visible, and when you do finally see it, it catches you off guard?....your mind tells you it should not be there.....we see heat rising every where, every day, causing visual distortions, we never think twice about it....i believe that this energy is the sound BASE that Ed talked about..... Simon David Eden MA Dist. [RCA] : 'The Weight of Fire' Research & Inspiration .......david

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