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radiation
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.