I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Sunday, October 16, 2005
Fill me up
When I am filled, I can point the way; When I am empty, Nothing moves me. I have two skins, One without and one within. What am I?
A compass points the way, if it is empty, ie nothing for the needle to float on, nothing will move it, it sits on the skin of the liquid it floats on and is surrounded by its outer skin. I think it works.
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A compass
ReplyDeleteA car
ReplyDeleteA compass points the way, but when empty, nothing moves it? Two skins? I'm not sure that works.
ReplyDeleteA car won't move when empty (unless you leave the e-brake off ;-)) but what are the two skins?
I believe the answer is a glove. But maybe I'm wrong and car or compass works.
A Klein Bottle?
ReplyDelete"The Klein Bottle is the closed non-orientable surface with Euler characteristic = 0." Wouldn't that imply that it couldn't point the way?
ReplyDelete;-)
A compass points the way, if it is empty, ie nothing for the needle to float on, nothing will move it, it sits on the skin of the liquid it floats on and is surrounded by its outer skin. I think it works.
ReplyDeleteI was thinking of a compass that works without something to float on. So, I guess it sort of works.
ReplyDelete