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    Construction Making a gong stand - will aluminium tubing be strong enough?

    I have a 30" diameter chao gong. I made a stand for it out of PVC tubing which does the job just fine, so I don't see you having any trouble with aluminum even though your gong is a touch bigger.
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    I Quantum entangled image sensor for space camera-telescope

    phinds, Hey... no statements or assertions made there... just a question. I don't presume that I know what I'm talking about.
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    I Quantum entangled image sensor for space camera-telescope

    So it sounds like what you are saying is that the idea of an image sensor composed of quantum-entangled particles is flawed. My thought was that the image sensor in the space-camera could respond to light or other electromagnetic radiation to produce an image (or data that could be reconstructed...
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    I Quantum entangled image sensor for space camera-telescope

    Could this be a possibility at some point? Since entanglement is not affected by distance, could we send cameras out to extremely distant places and get instantaneous signals? Only the image sensor would have to be entangled. It would still take the same amount of time as usual to get the camera...
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    One coil twisted in a figure 8 vs. two coils side-by-side

    I read what you wrote... what I was asking was how I would get those figures to begin with (inductance of each loop and the mutual inductance) to be able to make the calculation. You didn't say to calculate those. What I'm after, mainly, though is to find if the fig 8 would behave any...
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    One coil twisted in a figure 8 vs. two coils side-by-side

    How would you measure the inductance of one loop of a twisted coil? With two coils in series, it's easy enough to separate them into two circuits and test each one; with one coil in a figure 8, each loop can not be separated into its own circuit.
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    One coil twisted in a figure 8 vs. two coils side-by-side

    The side by side coils are round or oval, and wired together in series. Let's say the side by side coils are wound opposite (one clockwise and one counterclockwise) to match the direction of travel of the twisted coil's loops. Each of the side by side coils has the same number of turns as the...
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    Number of turns vs. wire length affecting voltage in coil

    I asked him to test the output voltage, but all he'll say is, "what you have supplied will not work properly". Since I don't know what work he wants it to do there's nothing I can do about that. He asked for equal voltage for each part, and from what people are saying that's what I gave him. It...
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    Number of turns vs. wire length affecting voltage in coil

    So is it safe to say that A in the original post is true? I made a set of three for this guy, and shipped them. I told him ahead of time how I was making them (same time, same RPM, two halves of one coil) and he had no objections. When I told him they had shipped, I told him about the resistance...
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    Number of turns vs. wire length affecting voltage in coil

    Thanks Jim. I've been considering that, and it should work. We're talking millivolts, so there's no danger of stressing the coating. It would mean reconfiguring my equipment, which will interfere with making my standard products. The wire is extremely thin (like spider webs) and passes through...
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    Number of turns vs. wire length affecting voltage in coil

    Thanks. The two coils are on the same core; one is inner, the other is outer. They're two halves (more or less) of the same coil. Theoretically it would be possible to coil around one section (half the length) of the core at a time, so both parts would be "inner", but this a) is not practical...
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    Number of turns vs. wire length affecting voltage in coil

    Another factor to consider is that the outer coil, while having greater length, is also a greater distance from the magnetic core in the center.
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    Number of turns vs. wire length affecting voltage in coil

    Thanks BvU. My background is in music, and my electronics experience is more practical than theoretical. Unfortunately I have no idea what to plug into that template. I make electromagnetic sensors. I have a line of products I make that people can order, but sometimes I get special requests...
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    Number of turns vs. wire length affecting voltage in coil

    When winding a coil around a magnetic core, if you wanted to tap the coil such that each half has the same AC voltage output, would you: A) wind each part at the same RPM for the same amount of time, to get the same number of turns for each, or B) wind the second part proportionally less, to...
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