Recent content by CharlesP

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    Paint your roof white to reduce global warming

    I bought a white metal roof and it helps a lot in summer. It also helps to use a fan to "sample and hold" the cool night air around 4 AM. Add that to digging 10 feet down for a basement and migrating there for the summer and the result is about three days worth of air conditioning for the whole...
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    Photon diffraction questions

    Michaelson Interferometer question I want to tool up to experiment in this area by making my own Michaelson interferometer since they are so expensive. One little problem: The interferometer I had in undergraduate class had screw adjustments for the mirrors that I could easily move a single...
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    Melting glaciers

    I am not going to waste time playing cat and mouse with every dumb piece of nonsense you bring up. The fact is that the icecaps are both melting bigtime. The permafrost is melting. Glaciers are melting almost everywhere. There is every indication that the earth's serface is warming as a whole...
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    Melting glaciers

    TCS daily looks like an industry toy - not a refereed journal, And the Science Forums is a joke. If you can't show me something from a refereed journal and then the proof that even THAT has been agreed upon then forget it. There are too many lie factories out there like the Discovery...
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    Melting glaciers

    Bird dog Andre I suspect, a real climate expert or better yet a team needs to follow Andre around and undo the damage he has done to science. But I don't have a ten million dollar budget for that. Certain industry and ideologically motivated folk will never see the light of the evidence no...
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    When lightning happens. Does energy bleed off into space?

    The splitting water drop model seems to be a good model because that is precisely the way my static generator worked. The voltage got so high and the drops got so charged that they went flying in all directions. As for the energy it is important to note that as in any capacitor the energy is...
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    Design a transportable capacitor

    I know of no straightforward way to formulate an equation for the capacitor energy density that can be maximized through differentiation. The dielectric constant is the capacitence parameter such that the greater K is the bigger the capacitence is. Thus good dielectric strength and a large...
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    Design a transportable capacitor

    For energy storage the thickness of the dielectric is important because it determines the voltage and thus the stored energy. It also unfortunately, contributes to the volume. I have some 80 volt capacitors and about 20 of them would make a Farad which also would be about a cubic foot and...
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    Lead acid batteries

    The only cell that works good on is lithium-ion. Lead acid is not too bad. Nicad and nickel-metal hydride are history dependent. That means either a charge or discharge perturbes the voltage which slowly returns to the normal curve. Heat can make these cells drop voltage which fools a charger...
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    Want to move on from XP to Linux, please help

    I have OK I see it. Now I need an image file to burn. My DSL is almost T1 if that helps. I don't understand what an image is all about anyway. Why not drag and drop, then burn? Unfortunately I can't speak that language. I do have a network with one machine to be dedicated to...
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    Want to move on from XP to Linux, please help

    Nero 6 is $79. I can't justify the price.
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    Want to move on from XP to Linux, please help

    "First step, download ubuntu, or whatever distro you are looking at. Then burn it to a cd/dvd. " The download comes as an image. I have Nero 5. I cannot burn an image because it is too complicated. Someone send me a message on the side. Thanks.
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    Capture energy from lightning

    I didn't see any numbers so I thought maybe throw out these if my memory is correct. You get no more than a million amperes for a microsecond average and the voltage must be small enough so the lightening doesn't bypass your terminals, say ten million volts. Try engineering that. Remember...
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    Cockroft-Walton question.

    Need 3 phase OK now what is the circuit for a three phase machine? Powered by three phase RF hopefully.
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    Plz help me in solving this circuit

    I see nothing but two ohm resistors. If so then even if the unknown is infinite you would still not get as low as three volts for the output (across the rightmost resistor). So I would question the problem. If you want two volts across the unknown then the problem is solvable.