Using Heat on Stuck Things, it works based on Physics

[Huw Powell]

> Thus, the holes diameter will actually increase rather than 
> decrease. It seems counter-intuitive until you think it out carefully. 
> 
> Thanks to Larry Gonick in his book, Thinking Physics.

After my last debacle with thought experiments I should know better, but 
the easiest way for me to get my head around this one (I initially 
"bought" the proposition that the hole would get smaller), was to leave 
the hole out - just scribe a circle on the piece of metal.  When you 
heat the metal up, it *all* gets bigger, ie, every point gets slightly 
further away from every other point.  Just like the incredible expanding 
universe.  So the hole gets bigger no matter how large or small the 
piece of metal it is a part of.  Or, I guess, not a part of.  Can a hole 
be part of something?  I know you can't paint a hole yellow...

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/