The following excerpt comes from the physics textbook Understanding Physics, by David Cassidy, Gerald Holton, and James Rutherford:
A ball lying on the floor will not somehow gather energy from its surroundings and suddenly leap up. An egg will not unscramble itself. An ocean liner cannot be powered by an engine that takes heat from the ocean water and ejects ice cubes.
I'm currently reading about entropy and that no closed system has a negative entropy, and in reality, nor does it have an entropy of 0.
I understand the first 2 examples, but the 3rd peeves me.
Why can't ocean liner be powered by an engine that takes heat from the ocean water and eject ice cubes? The water is has more heat (energy) than ice cubes, so it makes some sense to me that the differential of heat can be of some use. Of course, this can't be true, because I've never heard of such an ocean liner. How come?
If you could make the explanation as if you were Feynman explaining it to a layman, :)
that would be great, as I'm a high school freshman, and Understanding Physics is not a college textbook.