09-05-2017, 07:25 PM | #61 | |
Wielder of Smart Pants
Join Date: Aug 2004
Location: Ventura CA
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Re: [Spaceships] Anti-Lithium for Drives – Does this work?
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09-05-2017, 09:59 PM | #62 | |
Join Date: Nov 2004
Location: The plutonium rich regions of Washington State
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Re: [Spaceships] Anti-Lithium for Drives – Does this work?
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Luke |
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09-05-2017, 10:09 PM | #63 | |
Join Date: Nov 2004
Location: The plutonium rich regions of Washington State
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Re: [Spaceships] Anti-Lithium for Drives – Does this work?
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http://www.ru.nl/hfml/research/levitation/diamagnetic/ used 16 tesla fields to levitate a frog against Earth's gravity. In space, of course, you can get by with much less. Modern superconducting magnets using classical (i.e. low temperature) superconductors regularly reach 15 tesla and and can be engineered to reach 20 to 30 tesla. https://en.wikipedia.org/wiki/Superconducting_magnet High temperature superconductor magnets are being bult that are expected to reach into the 30+ tesla range. https://nationalmaglab.org/magnet-de...s/32-tesla-scm At TL 11 we can probably safely assume that robust, flexible, high Tc superconductive tape is a mature technology, allowing high field magnets with at most liquid nitrogen temperatures - if not replaced by something better. Luke |
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09-05-2017, 10:17 PM | #64 | |
Join Date: Nov 2004
Location: The plutonium rich regions of Washington State
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Re: [Spaceships] Anti-Lithium for Drives – Does this work?
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http://www.ru.nl/hfml/research/levitation/diamagnetic/ because the electromagnetic force does not care about whether something is matter or antimatter (C, or charge conjugation, symmetry https://en.wikipedia.org/wiki/C-symmetry), several grams of antimatter would be subject to the same force by the same field. Bulk, charge neutral antimatter would experience no additional forces compared to bulk charge neutral matter. There is no special attraction between antimatter and matter that does not exist between matter itself (that is, the antimatter's matter counterpart would be just as attracted or repelled from another piece of matter as the antimatter itself). C-symmetry again. A lump of anti-lithium (or an anti-frog) would be levitated against Earth's gravity by the same strength field (although an anti-frog would need anti-air around it to breathe, which might have adverse consequences on your magnets). Luke |
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09-05-2017, 10:18 PM | #65 |
Join Date: Nov 2004
Location: The plutonium rich regions of Washington State
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Re: [Spaceships] Anti-Lithium for Drives – Does this work?
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09-05-2017, 10:20 PM | #66 | |
Join Date: Jul 2008
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Re: [Spaceships] Anti-Lithium for Drives – Does this work?
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I don't know any 3e, so there is no chance that I am talking about 3e rules by accident. |
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09-05-2017, 11:15 PM | #67 |
Untagged
Join Date: Oct 2004
Location: Forest Grove, Beaverton, Oregon
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Re: [Spaceships] Anti-Lithium for Drives – Does this work?
I conflated hydrogen with helium but I responded to what TL hydrogen was frozen at, not liquified.
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09-06-2017, 09:42 PM | #68 | |
Join Date: Nov 2004
Location: The plutonium rich regions of Washington State
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Re: [Spaceships] Anti-Lithium for Drives – Does this work?
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Luke |
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