Lightning

Discussion in 'General Electronics Chat' started by Lightfire, Jul 8, 2011.

  1. Lightfire

    Thread Starter Well-Known Member

    Oct 5, 2010
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    21
    Hello,

    I really don't know where to post this kind of topics. Maybe in General Science or here? I don't know. Please moderators move this topic in a more appropriate section.

    Is it possible to create a little lightning? I mean just like lightning happening when negative and positive charges from the cloud attracts each other.

    I mean in little lightning is that is it possible to make a lightning, my own, with myself only?

    I see that when you short-circuit a 12 volt battery, it sparks. Isn't it the lightning???

    Please help

    Lightfire
     
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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  3. shortbus

    AAC Fanatic!

    Sep 30, 2009
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    Catapult, do you have a cat? If so sit in a darkened room and rub its fur then touch a door knob or water pipe. You should see a spark when finger gets close. Thats 'frictional static electricity' same as lightning.

    Here is a link to static electrical machines; http://www.sparkmuseum.com/FRICTION.HTM
     
  4. cjdelphi

    New Member

    Mar 26, 2009
    272
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    im on my phone without spell checker....

    A vandergraff i think it's spelt, it produces static electric (like lightning) a belt and material which seperate the electrons until discharge takes place..
     
  5. DerStrom8

    Well-Known Member

    Feb 20, 2011
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    Hi, Catapult! :)

    I have built several of these before, but I most certainly would not recommend them to a beginner. They involve very high voltages and high current--more than enough to kill you. I suggest you wait a while before even attempting this ;)

    A Van de Graaff Generator would be a fantastic idea. You can usually generate, depending on the size of the whole thing, 100-500 thousand volts, but at a safe current. It may hurt a bit to touch a spark from a Van de Graaff generator, but it would definitely not kill you. This would be a great place to start. If you've ever been to a science museum, this is the machine that you put your hands on and it makes your hair stand on end. It's fun, easy to make, and safe. Here are a few links to get you started:

    http://scitoys.com/scitoys/scitoys/electro/electro6.html
    http://www.instructables.com/id/Homemade-Van-De-Graaff-Generator/
    http://hub.webring.org/hub/hvr
    http://freespace.virgin.net/paul.zimmermann/VDG/vp1.htm
    http://www.wvlightning.com/graafflinks.shtml
    http://amasci.com/emotor/vdg.html

    That should be enough to begin with. Remember, AAC is always here for you, as is Google. Let us know if you have any more questions. :)
    Regards,
    Der Strom
     
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  6. Wendy

    Moderator

    Mar 24, 2008
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    There is an old technique for generating high voltage that probably resembles what is going on in a thundercloud better than most. I have heard it referred to as a water battery, but the term is misleading. It is actually a Kelvin Water Dropper.

    http://video.google.com/videoplay?do...1475172785592#

    Don't ask me how it works, I don't know. It is very interesting though.
     
  7. DerStrom8

    Well-Known Member

    Feb 20, 2011
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    You know, I had forgotten all about those things :D
    I had once done quite a bit of research on them. It is important to remember that you can only use distilled water for one of these, though. Otherwise it probably wouldn't work. The idea is that as a droplet of water drips through a copper ring, it induces a bit of static charge in the loop. This charge passes to the connected metal cans on either side of the device. As the water drips, each can develops an opposite charge from the other. When the voltage becomes high enough, the air breaks down between the cans (or the contacts connected to the cans) and a spark jumps. A very ingenious device, really. They are rather picky, though. I'll have to see about resurrecting the one I worked on some years back ;):D
    Seems like another fun project!
    Der Strom
     
  8. Wendy

    Moderator

    Mar 24, 2008
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    I suspect if you use drops instead of a steady stream it will work well enough. You have to remember when this device was made. I doubt very seriously they had anything resembling pure water back then, though I guess they could have distilled it (distilled spirits had been invented).
     
  9. strantor

    AAC Fanatic!

    Oct 3, 2010
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    didn't see the spark
     
  10. Wendy

    Moderator

    Mar 24, 2008
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    Out of the three times they tried to show it the middle actually made it on the video.
     
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