Recent content by NoTime

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    Gravity On a Ring Around the World

    The article covers a wide variation of the theme, not limited to the initial Dyson concept. A ring is just a slice out of a sphere and the ring subclass is referred to as a niven ring. Other than that anything else is a matter of scale.
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    C# Learn C#: Resources for Beginners

    Microsoft has historically been very good about providing sample code. When you start the program click help->samples. Or go to http://msdn.microsoft.com/en-us/bb330936.aspx
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    Gravity On a Ring Around the World

    The class of object you are describing is often referred to as a Dyson Sphere. Some information can be found here http://en.wikipedia.org/wiki/Dyson_sphere
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    Particles being in more than one place at once.

    This is QM, but the concept is more like a particle can be anyplace. Not the same as being in more than one place at once. I think there is some Astrophysics (as well as some other areas) work being done on "rolled up dimensions". I'm inclined to say that the words "tiny" and "microscopic"...
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    The weirdest and most puzzling problem I've ever encountered

    Your head is reflected at the position your head is at. Your feet are reflected at the position your feet are at. It's the same with both hands. It is only your mind that wants to do the rotation on the vertical centerline. You get exactly the same effect using a video camera. No mirror...
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    Particle creation and annihilation and the remaining fields problem

    Granpa may not be all that far off. I'd have to do some research to understand the proposed mechanism though. Standard particle physics would have neutron decay as proton, electron, and an electron-type antineutrino. http://www.ns.umich.edu/htdocs/releases/story.php?id=3070
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    Particle creation and annihilation and the remaining fields problem

    As malawi_glenn already pointed out, your question appears similar to the question of "Will the gravitational force experienced by Earth cease to exist at the same instant as the sun disappears". Since you didn't address the analogy, I'm going to guess that you don't understand that this is an...
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    Impedance Matching Transformer

    There are four different classes of output circuits. A, B, C and D Generally in order of increased efficiency and increased distortion. The particular circuit example you posted is class B. I suspect class C might be the best choice for your application. Using class D (square wave...
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    Heat transfer coefficient of bare wire in still air

    Welcome to PF. You are right that it is a complex problem. I don't know of any tables for your example, but that doesn't mean much. Temperature rise will depend on how large the convection air currents generated by the heat from the power dissipated in the wire are (and thermal radiation)...
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    Impedance Matching Transformer

    Because the output loop is resonant there should be some energy storage in the output loop (like riding a swing). It will be important to keep the output loops resistance as low as possible. You will probably need to adjust the drive frequency, depending on what object is in the heater coil...
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    Can Heroes Use a Lunar Rock's Angular Momentum to Safely Land a Spacecraft?

    I'm no expert, but orbital mechanics being what they are, I'm sure there is an exact minimum energy solution to your scenario. Just a thought. By specifying the trajectory as being from the north to south pole then it just barely fails to be an orbit. This says to me that the delta v required...
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    Make Bread at Home - An Artful Endeavour

    Now that is an idea. I have the same problem as wolram, better, but not the same as oven baked. I used to make my own bread, but after the kids moved out, I'd sit there and eat the whole thing at once :biggrin: :rolleyes:
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    Can Heroes Use a Lunar Rock's Angular Momentum to Safely Land a Spacecraft?

    Well, the amount of energy to kick the rover up is the same amount that they have to get rid of to stop going down. Since they survived the "Takeoff" they should survive the landing. If they have any delta v capability at all, then the landing should be less stressful.
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    Is it possible to control LED lights with a DVD player output?

    You would need to decode the composite output from the DVD player into RGB outputs. You could connect your display to the monitor output of a computer. Or scavenge some of the circuitry from an old TV. I don't know if a standalone composite to RGB converter is available, perhaps.
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    Eimac Type 8533 Planar Triode Connections?

    It's been a long time since I did anything with this, but IIRC they just went in order. Filament filament cathode grid plate. The plate connection having the largest separation from the other contacts. Perhaps if you contacted the ARRL they might have some more info on the tube and socket...
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