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Tech Head - The Technology Section
Einstein's Alcove
Imaginary Time
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<blockquote data-quote="spiney" data-source="post: 109056" data-attributes="member: 192438"><p>having just read original post again, I believe Hawking is referring to a "topology shift", at the start of universe (and possibly also at the end, if there's ever a "big crunch"), where the 4-d axis rotates, so that the time "i" axis "points" where the space ones later will. No, I don't understand it either. But it's discussed in "pop science" book The Nature Of Space And Time, by Hawking and Penrose, which keeps maths to minimum and concentrates on descriptions, worth looking at if you're interested.</p><p></p><p>(Googling "hawking penrose" will get a selection of short articles and book reviews).</p></blockquote><p></p>
[QUOTE="spiney, post: 109056, member: 192438"] having just read original post again, I believe Hawking is referring to a "topology shift", at the start of universe (and possibly also at the end, if there's ever a "big crunch"), where the 4-d axis rotates, so that the time "i" axis "points" where the space ones later will. No, I don't understand it either. But it's discussed in "pop science" book The Nature Of Space And Time, by Hawking and Penrose, which keeps maths to minimum and concentrates on descriptions, worth looking at if you're interested. (Googling "hawking penrose" will get a selection of short articles and book reviews). [/QUOTE]
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Einstein's Alcove
Imaginary Time
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