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March 21, 2014

Prior to this 19th-century cold rush

most European scientists believed that coldness itself was an actual physical substance--made up of atoms of an airborne primordial gas.
This explained why water expanded upon freezing--it was taking in a large amount of these cold particles. Physicist Robert Boyle dispelled this notion in 1665 by painstakingly weighing water before and after putting it outdoors on a freezing night, demonstrating that only its volume had changed, not its mass.Absolute Zero is 0K

Posted by gerardvanderleun at March 21, 2014 11:43 AM. This is an entry on the sideblog of American Digest: Check it out.

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