วันพฤหัสบดีที่ 11 กุมภาพันธ์ พ.ศ. 2559

Space

This article is about the general framework of distance and direction. For the space beyond Earth's atmosphere, see Outer space. For the keyboard key, see Space bar. For other uses, see Space (disambiguation).
A right-handed three-dimensionalCartesian coordinate system used to indicate positions in space.
Space is the boundless three-dimensional extent in which objects and events have relative position and direction.[1] Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, withtime, to be part of a boundless four-dimensional continuum known as spacetime. read more

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