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单词 point-instant
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point-instant
point-instant n. [after German Ortszeit ( H. A. Lorentz Versuch einer Theorie der electr. u. optischen Erscheinungen in bewegten Körpern (1895) iii. 50] Physics a mathematical point in space–time; the smallest unit of space–time.
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the world > space > [noun] > space-time continuum > event or position in
point-event1918
point-instant1920
1918 W. P. Montague in Stud. Hist. Ideas (Columbia Univ. Dept. Philos.) I. 246 A moving body, besides involving a series of point-instant correlations, involves equally a series of beside-succession correlations.]
1920 S. Alexander Space, Time & Deity I. 58 It is assumed that at each point-instant (the name is due to Mr. Lorentz, Ortszeit) there exists some perceptible ‘substance’.
1973 C. R. S. Harris Heart & Vascular Syst. Anc. Greek Med. vii. 407 Galen appears to analyse our perception of a moving body into a succession of point-instants.
2001 Isis 92 248/1 They then become incorporated in the concept of Leibniz's ‘monadology’, which perceives the world as consisting of unextended atomic point-instants.
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