The Magic Ball
Science brain teasers require understanding of the physical or biological world and the laws that govern it.
There was a magic show. A man put a solid metal ball under an opaque cover. After a while, he took the cover off of the ball and there was nothing left but some liquid.
It was a ball of gallium at 80F. After the ball was heated to 85F, it melted and became a liquid. Gallium's melting point is 85F.
Oct 29, 2001
|Or water... or any other matter that is liquid at room temperature and solid at not too extreme low temperatures.|
Nov 21, 2001
|I'm guessing the magician isn't going to live past 40, doing tricks with mercury.|
Nov 21, 2001
|according to... the bottom comment... water isnt opaque|
Dec 02, 2001
|re: the last comment - ya, magician to mad hatter...|
Anyway, I guessed a snowball - at any rate, it sounds like we all came to the same chilling conclusion - what I want to know is, what kind of a "get a life" audience is gonna sit there and wait for something to MELT?
(I can just picture it - then the magician says, "Ta Da!!!"
Dec 07, 2001
|It is maybe carved ice|
Apr 22, 2002
|ice is opaque|
Nov 12, 2002
|Hg is too dangerous to try this with. Instead use Ga (Gallium) which is also a metal (by the way this question would be better if it said a metal ball) and freezes at room temp and melts in your hand. So you would just put the gallium ball in your hand, close your hand for a minute or less, and when you open it there would be liquid gallium. TaDa|
Nov 24, 2003
|That's some freezer you got there -38 Degrees C?|
May 25, 2006
|Water is not a metal!|
Apr 02, 2007
|I don't get this and isn't there already a brainteaser like this one? If you know, please tell me the answer to either! |
Feb 23, 2010
|Gallium is definitely better for this trick.|
Back to Top