That is a very good question. I seemed to have found the answer on TechGnome’s site. Here’s an excerpt from his article.
Most of the students wrote proofs of their beliefs using Boyle’s Law (gas cools when it expands and heats when it is compressed) or some variant. One student, however, wrote the following….
Wanna read the rest? It’s a really good and funny article, a must read. So go read TechGnome’s post.