a: Thermal expansion ~
b: heating a metal lid on a container
What:
Sometime it's difficult to remove a lid from a jar. If you run hot water over a metal lid and then dry the lid, it becomes much easier to remove. The hot water is expanding the metal lid making giving it a looser fit, which makes it easier to turn and thus remove.
Useful?
Writer: Lucrezia
LCC:
Where: Reference Link Has Evaporated
Date: Dec 8 2014 4:29 PM
# 6654 Critique Analogy