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A comment on What Is Time?. Parent comment

Re:What Is Time? by iaw on Saturday August 23, 2014 @04:57PM (#8216849)
I wonder if the statement about Newton's second law (there exists an r(-t)) holds true when you include relativistic effects.
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Re:What Is Time? by calhoun137 on Saturday August 23, 2014 @05:16PM (#8216891)
Time is reversible in general relativity, in the sense that if you replace t by -t everywhere the solution is still valid. I don't remember the full proof off the top of my head, and the argument I do remember is complicated.
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Re:What Is Time? by pentabular on Saturday August 23, 2014 @07:25PM (#8217169)
no such thing as backwards time travel, sorry!
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Re:What Is Time? by drdeca on Saturday August 23, 2014 @08:06PM (#8217237)
Can you clarify? I don't know what you mean.
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Re:What Is Time? by iscrewyou on Saturday August 23, 2014 @08:03PM (#8217233)
Oh, Ok!
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