Excerpt from the July 8, 1967, issue of Science News
Lowest temperature yet
A common pin dropped on a table from a height of one-eighth of an inch generates about 10 ergs of energy, obviously a minuscule amount. That 10 ergs raises temperature, and even that tiny amount is “much too much” to be allowed in the experiment during which Dr. Arthur Spohr of the Naval Research Laboratory reached the lowest temperature yet achieved — within less than a millionth of a degree of absolute zero. — Science News, July 8, 1967.
Today, scientists can make clouds of atoms at temperatures as low as 50 trillionths of a degree above absolute zero (