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Feb 20, 2002
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Originally posted by revenant
Pencil lead? Give url?
Errr... that was a LONG time ago :)
Basically, I made a 0.5mm pencil lead glow white hot by connecting it across a DC power supply (not easy to do without it breaking first... I only got that ONE picture), then asked people on HWZ forums whether they could guess what it was :)
Turned out that ckiang was the one who guessed correctly. :)

By the way, here's the pic if anyone's interested.

Do not try this yourself! I was quite lucky I didn't set fire to the contents of the bin...

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