Absolute Zero
I didn't knwo about this site, a true find: the writing and witticisms are fantastic, e.g.<p>"As [sic] unspecified assistant with quick reflexes reversed the helium valve, but he turned it either the wrong way or too far, because instead of halting the flow of helium, he caused it all to be vented into the laboratory. Dewar's notes do not indicate whether a high-pitched apology was offered."<p>(Although some proofreading would have been useful.)