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Stephen Hawking's Interstellar Spaceship Proposal (And More!)
Good question. Positronium is not an exact analogue of a hydrogen atom since
it consists of an electron and a positron (anti-electron) orbiting each other while the hydrogen atom has an electron orbiting around the much more massive proton. The highly advanced theory of quantum electrodynamics (QED) mentioned in the article describes how these states are stable or unstable. BTW, the production of antihydrogen is quite low: CERN snags 38 antihydrogen atoms in magnetic trap. http://arstechnica.com/science/2010/...ydrogen-atoms/ by Alexander B. Fry - Nov 17, 2010 11:11pm EST But theoretical work may allow the production rate to be ramped up: Physicists find ways to increase antihydrogen production. May 20, 2015 by Lisa Zyga http://phys.org/news/2015-05-physici...roduction.html Bob Clark ---------------------------------------------------------------------------------------------------------------------------------- Finally, nanotechnology can now fulfill its potential to revolutionize 21st-century technology, from the space elevator, to private, orbital launchers, to 'flying cars'. This crowdfunding campaign is to prove it: Nanotech: from air to space. https://www.indiegogo.com/projects/n...ce/x/13319568/ ---------------------------------------------------------------------------------------------------------------------------------- "ClutterFreak" wrote in message ... On Sun, 29 May 2016 09:19:21 -0400, Robert Clark wrote: http://physicsworld.com/cws/article/...zzle-is-solved Why same thing doesn't happend to hydrogen? -- |
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Stephen Hawking's Interstellar Spaceship Proposal (And More!)
On Tue, 7 Jun 2016 09:51:05 -0400, Robert Clark wrote:
on. Positronium is not an exact analogue of a hydrogen atom since it consists of an electron and a positron (anti-electron) orbiting each other while the hydrogen atom has an electron orbiting around the much more massive proton. The highly advanced theory of quantum electrodynamics (QED) mentioned in the article describes how these states are stable or unstable. So the difference is made only by higher mass where the positive charge is, something as lame as just gravity at that scale, or is it much more involved having to do with what "mass" itself is? -- "Woade Hueoo" -extra thick-lipped Black American female intending to say "Walnut Hill" --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
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Stephen Hawking's Interstellar Spaceship Proposal (And More!)
On 6/7/16 9:51 AM, Robert Clark wrote:
Good question. Positronium is not an exact analogue of a hydrogen atom since it consists of an electron and a positron (anti-electron) orbiting each other while the hydrogen atom has an electron orbiting around the much more massive proton. So why isn't it made of a positron in orbit around an anti-proton? That would be an exact analogue, yes? -- Sea Wasp /^\ ;;; Website: http://www.grandcentralarena.com Blog: http://seawasp.livejournal.com |
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Stephen Hawking's Interstellar Spaceship Proposal (And More!)
Yes. In the post earlier today in this thread I discussed antihydrogen being
formed. Bob Clark ---------------------------------------------------------------------------------------------------------------------------------- Finally, nanotechnology can now fulfill its potential to revolutionize 21st-century technology, from the space elevator, to private, orbital launchers, to 'flying cars'. This crowdfunding campaign is to prove it: Nanotech: from air to space. https://www.indiegogo.com/projects/n...ce/x/13319568/ ---------------------------------------------------------------------------------------------------------------------------------- "Sea Wasp (Ryk E. Spoor)" wrote in message ... On 6/7/16 9:51 AM, Robert Clark wrote: Good question. Positronium is not an exact analogue of a hydrogen atom since it consists of an electron and a positron (anti-electron) orbiting each other while the hydrogen atom has an electron orbiting around the much more massive proton. So why isn't it made of a positron in orbit around an anti-proton? That would be an exact analogue, yes? -- Sea Wasp /^\ ;;; Website: http://www.grandcentralarena.com Blog: http://seawasp.livejournal.com --- |
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