WanderingThoughts comments on Anon finds a glitch

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[–] WanderingThoughts@europe.pub 24 points 8 months ago (3 children)

The teacher was explaining about conducting and not conducting, and we had a battery with lamp thing to test on various objects. I of course had to test this on a pencil and discovered semi-conducting. That was a serious "not today" sigh from the teacher.

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[–] ulterno@programming.dev 9 points 8 months ago* (last edited 8 months ago) (1 child)

How did that work?
Doesn't pencil lead material just work as a resistor? It's mostly graphite and clay, and shouldn't have the required structure to work as a semi-conductor.

Ahh right. I had forgotten about how to term "semi-conducting" was used back in elementary, thanks to semiconductors and the lot.

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[–] WanderingThoughts@europe.pub 6 points 8 months ago

In my case it gave off a few sparks at the contacts what really makes it interesting for young me.

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[–] Nikelui@lemmy.world 5 points 8 months ago

Everything is a conductor if your generator has a high enough frequency.

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