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Glowing pencil lead

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Uploaded by on Aug 27, 2007

This is the result of applying a regulated 5V DC voltage across a 0.7mm graphite pencil lead. The instrument on the left shows current in Amperes.

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Howto & Style

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  • looks like the multimeter on the left is actually set at voltage (according to the top of the display reading "mV")

  • I applied an 18V AC current at 0.8A. Shit got crazy.

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All Comments (127)

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  • TOUCH IT!

  • The multimeter is like a timer lol!

  • @koenie12345 need more power.

  • @koenie12345: try to apply higher voltage. Mine needed 24-28V for 2-2.5A

  • @Univac93 & BarneySaysHi: or maybe he just have 1mOhm resistor in series?

  • mine blew up

  • first day learning from my electric class i light up a Resister.

  • @virusz1000 LOL

  • @koenie12345 u need 6 volt bat.

  • the new neons for my Mustang RC

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