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Thread ID: 55052	2005-03-01 10:10:00	Teleportation / Time travelling...	Renmoo (66)	PC World Chat

Post ID	Timestamp	Content	User
329485	2005-03-05 01:51:00	Actually, Terry, you don't need to throw everyone off the earth (though sometimes it seems like a Very Good Idea) . I saw the numbers worked out once, and you can decelerate at less than 1 G and still remove the rotation in a reasonably short time . I haven't got my calculator with me (and no big envelopes) . Tidal energy power generation slows the rotation by a measurable amount . For teleportation, Floo powder seems to be requisite . The diamond crystals needed to store (at one bit of information per atom) the position information for all the molecules of a human would be about 100 times the weight of the individual (I was a bit out -- and I've checked my reference) . There would be some "minor technical development" (;)) needed to grow such crystals, and the task of loading and recovering the data needs some work, too . I don't think it's likely to happen . This is much like the fallacy of perpetual motion . Or "Free Lunch" . Those laws of thermodynamics have a lot to answer for: You can't win You can't break even . You can't get out of the game . This is not rocket science . The Apollo project got men to the moon and back using plain old Newtonian mechanics . Most space work doesn't use relativistic mechanics because the speeds are not high enough for the difference to be bigger than the other sources of error . You have to take account of Doppler effects for communications (as evidenced by the Cassini-Huygens problem) but that's NOT Einsten's fault . (It's due to the relative motion, not Relativity . ) GPS timekeeping calculations probably use relativity, but that's making time measurements in units of less than a foot . ;) Billy's showing off . Making hot drinks at five minute intervals just means he is thirsty, not that he's psychic .	Graham L (2)
329486	2005-03-05 02:04:00	If we are getting into metaphysics, remember Bishop Berkely (1561-1626) who made the proposition "If a tree falls in the forest and no one hears it, does it make a sound?" Summed up (to continue my attempts to keep the level of debate suitably serious) by these limericks: There was once a man who said, “God Must think it exceedingly odd If he finds that this tree Continues to be When there’s no one about in the quad . ” answered by Dear Sir, Your astonishment’s odd: I am always about in the quad . And that’s why the tree Will continue to be, Since observed by Yours faithfully, God .	Tony (4941)
329487	2005-03-05 03:28:00	Here is a site Terry might like .. www.geocities.com	TonyF (246)
329488	2005-03-05 03:57:00	Or maybe this one for all of you .. m.webring.com	TonyF (246)
329489	2005-03-05 04:07:00	Billy's showing off. Making hot drinks at five minute intervals just means he is thirsty, not that he's psychic. Bugger :( I've been sprung! There I was, hoping we would get sidetracked down a metaphysical road that might help me stay sweet with Mrs T, and now I'll have to find a different line of attack. I am seriously considering taking you off my Christmas card list Graham. Cheers Billy 8-{) :thumbs:	Billy T (70)
329490	2005-03-05 04:28:00	Here is a site Terry might like .. www.geocities.com I think I prefer this one Tony :thumbs: : perpetuum mobile (www.christianbook.com)	Terry Porritt (14)
329491	2005-03-05 04:32:00	What is the transportation time (or speed) of telepathic communication . Is it instantaneous, or is it too, tied to the speed of light? I dont know about that, but the speed of thought often grinds to zero for me, increasingly so these days .	Terry Porritt (14)
329492	2005-03-05 06:57:00	:eek: It all depends on how quickly the Earth stopped rotating, if suddenly, then we would all be thrown off, and time would stop for everyone . :rolleyes: Reminds me of H G Wells and "The Man Who Could Work Miracles" . We are entering metaphysical debate, does something exist in the absence of human observation or presence? The Earth is just one huge convenient artifact that was used for the measurement of time, the mean sideral second, the day, the year, the seasons etc . Now we have atomic clocks, independent of the Earths' rotation . Currently there is activity to try to replace the chunk of metal that is the standard kilogram . Physical artifacts are not very good for standards of measurement . Just imagine an over enthusiastic technician, polishing and cleaning the standard kilogram each day to keep it shiny . He rubs off some atoms each time, and the kilogram gets lighter, we all start getting heavier . :blush: Metals evaporate, change size, absorb gases etc, they are not invariant . Same with the Earth, gains mass from space, loses mass when we shoot stuff into space, it is not a really good time keeper . If all the Chinese jumped up and down together, it may well cause a change in rotation! Let's say, the earth slows down gradually at an acceleration of -0 . 1m/s/s and the earth also start to rotate around the sun at an acceleration of -0 . 1m/s/s . That would means that everybody won't fly off the surface of the earth . Will there be any effect on time?	Renmoo (66)
329493	2005-03-05 09:32:00	Let's say, the earth slows down gradually at an acceleration of -0 . 1m/s/s and the earth also start to rotate around the sun at an acceleration of -0 . 1m/s/s . That would means that everybody won't fly off the surface of the earth . Will there be any effect on time? With Newtonian central orbits, eg . the motion of planets around the Sun, the transverse acceleration is zero . The Earth is already rotating around the Sun, but if you give it a deceleration of 0 . 1m/s/s in its direction of motion, ie in a transverse direction to the radial acceleration which is directed towards a fixed central point (the Sun), then The Earth will spiral in towards the Sun, and eventually time will stop for everyone again :eek: The rotation of the earth has no effect on time at all, except in so far as the magnitude of what we call a day would be different . If the Earth had always rotated faster than now, say in 15 of our hours, we would still have called that a day, and subdivided it into a number of what may have been called hours . I suppose metabolisms would have been different though . But the rotation of the earth has no effect on the laws of physics .	Terry Porritt (14)
329494	2005-03-05 10:06:00	http://www.johntitor.com Check that out. I won't say I believe in John Titor. I don't believe in going back to the past.	Renmoo (66)
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