On 2001-10-23 04:24, Simon wrote:
I'm surprised nobody's suggested this yet, 'cause it's a pretty simple one: Focault's Pendulum (sp?). Anyway, the idea is thus: You take about 30 meters of rope, hang it from something sufficiently high (ideally indoors), tie a big weight to the end, and give it a swing. Every five or ten minutes you mark the path it swings along. And after a while you see that the path slowly rotates. The pendulum isn't rotating though, it's the floor -the earth- rotating below it. Simple.
Yeah, the roof it's attached to rotates also, but most of the ones I've seen have a swivel that lets it move freely.
Actually, would this work at or near the equator? I really don't think so; it would work best at high latitudes.
...Arg! *headslap* Dude, that doesn't
tell you it's round, only that it's rotating.
Sorry, ignore my half-baked rambles. But it IS a good way to show someone that it rotates.
<font size=-1>[ This Message was edited by: Simon on 2001-10-23 04:26 ]</font>