Sunday, October 31, 2010

electromagnetic fields, duh

i consider myself a relatively not-un-educated person, yet when it comes to seemingly simple devices like "compasses," i feel like i'm from the middle ages. i can't explain how they work. it's just this weird magic thing about our planet. i guess there is some invisible force that pulls metal to the north? that sounds goofy. why haven't all the metal things been pulled up to the north pole by now? i don't get it.

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