Tagged Questions
4
votes
1answer
40 views
Reflectivity of a glowing-hot metal surface
When a polished piece of metal (or steel in particular) is heated to incandescence, how do its reflective properties change?
Given a mirror-like surface, would the object temporarily cease to act ...
2
votes
2answers
949 views
Will the hole on a metal disc expand or contract upon heating? [duplicate]
Possible Duplicate:
Will a hole cut into a metal disk expand or shrink when the disc is heated?
The metal disc of diameter D1 has a hole in it and the diameter of the hole is D2 (D2
Now, ...
23
votes
8answers
8k views
Will a hole cut into a metal disk expand or shrink when the disc is heated?
Suppose you take a metal disc and cut a small, circular hole in the center.
When you heat the whole thing, will the hole's diameter increase or decrease? and why?
