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Empty space may refer to: ==Physics== * Outer space, especially the relatively empty regions of the universe outside the atmospheres of celestial bodies * Vacuum, a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than atmospheric pressure * Free space, a perfect vacuum as expressed in the classical physics model * Vacuum state, a perfect vacuum based on the quantum mechanical model * In mathematical physics, the homogeneous equation may correspond to a physical theory formulated in empty space *Void, empty space. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Empty space」の詳細全文を読む スポンサード リンク
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