Difference between revisions of "Vacuum"
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| − | A '''vacuum''' is any region in space devoid of [[atom]]s and [[molecule]]s. Such a region does not conduct heat or transmit sound waves and has important uses for both science and technology. | + | A '''vacuum''' is any region in space devoid of [[atom]]s and [[molecule]]s. Such a region does not conduct heat (although heat can travel through it by [[radiation]]) or transmit sound waves and has important uses for both science and technology. |
While a perfect vacuum is theoretically possible, it has never been replicated in the lab. [[Blaise Pascal|Pascal]] was the first person to prove the existence of a vacuum. | While a perfect vacuum is theoretically possible, it has never been replicated in the lab. [[Blaise Pascal|Pascal]] was the first person to prove the existence of a vacuum. | ||
Revision as of 11:33, May 1, 2009
A vacuum is any region in space devoid of atoms and molecules. Such a region does not conduct heat (although heat can travel through it by radiation) or transmit sound waves and has important uses for both science and technology.
While a perfect vacuum is theoretically possible, it has never been replicated in the lab. Pascal was the first person to prove the existence of a vacuum.
Source
The New American Desk Encyclopedia, Penguin Group, 1989