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Thread: Alcubierre drive - brže od svijetlsti

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    Default Alcubierre drive - brže od svijetlsti

    Last edited by funestis; 10-02-07 at 23:56.

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    Naidjoh danas na zanimljiv tekst na www.space.com


    Warp Drive May Be More Feasible Than Thought, Scientists Say


    HOUSTON — A warp drive to achieve faster-than-light travel — a concept popularized in television's Star Trek — may not be as unrealistic as once thought, scientists say.A warp drive would manipulate space-time itself to move a starship, taking advantage of a loophole in the laws of physics that prevent anything from moving faster than light. A concept for a real-life warp drive was suggested in 1994 by Mexican physicist Miguel Alcubierre, however subsequent calculations found that such a device would require prohibitive amounts of energy.Now physicists say that adjustments can be made to the proposed warp drive that would enable it to run on significantly less energy, potentially brining the idea back from the realm of science fiction into science."There is hope," Harold "Sonny" White of NASA's Johnson Space Center said here Friday (Sept. 14) at the 100 Year Starship Symposium, a meeting to discuss the challenges of interstellar spaceflight.Warping space-timeAn Alcubierre warp drive would involve a football-shape spacecraft attached to a large ring encircling it. This ring, potentially made of exotic matter, would cause space-time to warp around the starship, creating a region of contracted space in front of it and expanded space behind. [Star Trek's Warp Drive: Are We There Yet? | Video]Meanwhile, the starship itself would stay inside a bubble of flat space-time that wasn't being warped at all."Everything within space is restricted by the speed of light," explained Richard Obousy, president of Icarus Interstellar, a non-profit group of scientists and engineers devoted to pursuing interstellar spaceflight. "But the really cool thing is space-time, the fabric of space, is not limited by the speed of light."With this concept, the spacecraft would be able to achieve an effective speed of about 10 times the speed of light, all without breaking the cosmic speed limit.The only problem is, previous studies estimated the warp drive would require a minimum amount of energy about equal to the mass-energy of the planet Jupiter.But recently White calculated what would happen if the shape of the ring encircling the spacecraft was adjusted into more of a rounded donut, as opposed to a flat ring. He found in that case, the warp drive could be powered by a mass about the size of a spacecraft like the Voyager 1 probe NASA launched in 1977.Furthermore, if the intensity of the space warps can be oscillated over time, the energy required is reduced even more, White found."The findings I presented today change it from impractical to plausible and worth further investigation," White told SPACE.com. "The additional energy reduction realized by oscillating the bubble intensity is an interesting conjecture that we will enjoy looking at in the lab."Laboratory testsWhite and his colleagues have begun experimenting with a mini version of thewarp drive in their laboratory.They set up what they call the White-Juday Warp Field Interferometer at the Johnson Space Center, essentially creating a laser interferometer that instigates micro versions of space-time warps."We're trying to see if we can generate a very tiny instance of this in a tabletop experiment, to try to perturb space-time by one part in 10 million," White said.He called the project a "humble experiment" compared to what would be needed for a real warp drive, but said it represents a promising first step.And other scientists stressed that even outlandish-sounding ideas, such as the warp drive, need to be considered if humanity is serious about traveling to other stars."If we're ever going to become a true spacefaring civilization, we're going to have to think outside the box a little bit, were going to have to be a little bit audacious," Obousy said.



    Prevodite na google translate ako ne znate Engleski. Prevod je jako loš , ali dovoljan da se pohvataju konci priče.

    Ludilom maskiram dosadu

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    Quote Originally Posted by lunar View Post
    Naidjoh danas na zanimljiv tekst na www.space.com



    Prevodite na google translate ako ne znate Engleski. Prevod je jako loš , ali dovoljan da se pohvataju konci priče.

    Quote Originally Posted by NSX View Post
    samo da ne bude a đe su bolan koočnice
    Vorp Drive ili kako ga još zovi Acubierre Drive (prema Meksičkom naučniku koji je predložio početni matematički model) je vrsta pogona koja utiče na prostor vrijeme direktno a ne kao klasični pogoni koji zavise od akcije i reakcije.

    Bazira se na inflatornom modeku svemira i na svojstvu prostora da se krivi i komprimira u jakom gravitacionom polju.

    Esencijalno svemirski brod bi pod uticajem ovog pogona komprimirao prostor ispred sebe, prešao taj komprimirani prostor te expandirao prostor iza u normalnu geometriju pri tome kretajući se podsvijetlosnom brzinom. Za posmatrača u brodu brod se kreće podsvijetlosnom brzinom kroz prostor, za posmatrača izvan broda (a koji se nalazi i izvan dijela prostora koji je komprimiran odnosno u normalnom svemiru) se kreće nadsvijetlosnom brzinom i nevidljiv je.

    Pogon ima dosta teoretskih problema koji se trebaju riješiti, problem kauzalnosti, problem konzervacije energije, masivan izvor mase koja se mora uključiti i isključiti po potrebi, što iako teoretski nije nemoguće zahtijeva ogromnu energiju (najnoviji proračuni pokazuju potrošnju energije koja je jednaka proizvodnji energije prosječne zvijezde), te zahtijeva postojanje ili stvaranje negativne mase odnosno materijala koji ima odbojnu gravitaciju (ovo teoretski postoji prema principu supersimetrije ali do sada nikad nije otkriveno fizički).



    http://en.wikipedia.org/wiki/Alcubierre_drive
    http://en.wikipedia.org/wiki/Energy_conditions
    http://en.wikipedia.org/wiki/Negative_mass
    http://en.wikipedia.org/wiki/Causality_(physics)
    http://en.wikipedia.org/wiki/Conservation_of_energy



    Meni je ovaj koncept vazda bio interesantan (od momenta kada sam saznao za njega) međutim današnja fizika negira mogućnost stvaranja ovakvog pogona zbog narušavanja kauzaliteta, međutim najnovija istraživanja unutar M teorije ponovo vraćaju ovaj drive u domen mogućeg tako da se ne može reći da je prekrižen samo veoma nevijerovatan. Međutim ljudi su poznati po tome da stvaraju nevijerovatne stvari pa tako i ova sprava bi jednom mogla postati realnost.
    Last edited by funestis; 17-09-12 at 16:48.

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    Pronašao sam sličan članak lunarovom. Jako zanimljivo. Nisam ni slutio da je ovaj koncept otišao toliko daleko da su već mogući i experimenti.

    http://news.discovery.com/space/warp...ss-120917.html
    http://news.discovery.com/space/warp...wormholes.html
    http://news.discovery.com/space/warp...-possible.html
    http://news.discovery.com/space/inte...er-120913.html



    LOL

    Last edited by funestis; 22-09-12 at 15:46.

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    Ah ima i ovo, loša strana Warp pogona ili Alcuberry kao oružje.

    http://io9.com/5889628/warp-drives-m...iller-downside

    Pričajmo o ispušnim plinovima LOL !!!
    Last edited by funestis; 22-09-12 at 15:47.

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    Sve je to još u raznoj fazi eksperimentisanja i vjerovatno je da je negdje napravljen propust u mjerenju, ili je zaboravljen neki propratni efekat. Da ne pominjem da stvar krši gomilu opštepoznatih i već stotinu godina provjerenih zakona kao napr o očuvanju energije. Ja sam lično skeptičan ,ali ima interesnatna rasprava na nasa space flight forumu gdje učesnicu u ovom eksperimentu iznse svoja mišljenja ,radove i konsultuju druge. Koga zanima interesantno za pogledati i praćenje najnovijih dešavanja na tom polju.
    http://forum.nasaspaceflight.com/ind...pic=36313.2320
    Ludilom maskiram dosadu

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    Quote Originally Posted by lunar View Post
    Sve je to još u raznoj fazi eksperimentisanja i vjerovatno je da je negdje napravljen propust u mjerenju, ili je zaboravljen neki propratni efekat. Da ne pominjem da stvar krši gomilu opštepoznatih i već stotinu godina provjerenih zakona kao napr o očuvanju energije. Ja sam lično skeptičan ,ali ima interesnatna rasprava na nasa space flight forumu gdje učesnicu u ovom eksperimentu iznse svoja mišljenja ,radove i konsultuju druge. Koga zanima interesantno za pogledati i praćenje najnovijih dešavanja na tom polju.
    http://forum.nasaspaceflight.com/ind...pic=36313.2320

    I meni je ovo sve previše dobro da bude istinito ali eto tu je.


    Šteta bi bilo da se ovo pokaže kao i ono sa hladnom fuzijom ili pamćenjem vode.

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    Ono što mi je interesantno kod ovoga da stručnjaci iz Nase javno objavljuju rezultate na forumu , konsultuju se sa drugim učesnicima foruma i primjenjuju njihove sugestije na eksperimentu. S obzirom da sami eksperiment nije puno komplikovan i ne postoji potreba za nekom ekstra skupom opremom to ga je moguće sprovoditi nezavisno u više laboratorija. Neki su se kao studenti angažovali na svojim univerzitetima i tražili sredstva za budžet eksperimenta ( oko 3000 dolara) da naprave i izmjere nešto slično. Inače su ovome prethodili i eksperimenti u Kini i VB. Meni je ovo sve čudno , mada nisam neki stručnjak, jer energija vakuma je neiscrpni izvor besplatne energije , koju jedino stručnjaci iz CERNA nisu uspjeli da vide :-P
    Ludilom maskiram dosadu

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    Iako sumnjam da je ovo realno , to što ovaj objavi na you tubu nije dokaz da ne radi. Nasa eagleworks laboratorija nastavlja sa testovima i u junu ili julu sprovodi seriju novih testova. Postoji neki dim tu a hoće li biti vatre vidjećemo.
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    Quote Originally Posted by lunar View Post
    Iako sumnjam da je ovo realno , to što ovaj objavi na you tubu nije dokaz da ne radi. Nasa eagleworks laboratorija nastavlja sa testovima i u junu ili julu sprovodi seriju novih testova. Postoji neki dim tu a hoće li biti vatre vidjećemo.
    4 tehnologije ključne za opstanak civilizacije na neodređeno vrijeme (bilion + godina)

    1. Napredni genetski inžinjering
    2. Nanotehnologija (i to nanoreplikatori)
    3. Termonuklearna energija
    4. Acubierre pogon

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    Evo još novosti o ovim NASA-inim istraživanjima i sve više izgleda da se radi o toploj vodi iako postoje neke minimalne indikacije da se nešto može izvući iz svega ovoga.

    http://www.space.com/29363-impossibl...pr=17610706465

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    LOL, Ne samo da postoji rješenje za Alcubierre Drive u stilu Star Treck nego postoji i za TARDIS!


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    A evo i ovaj video koji je tako gnnnghhh!!! odnosno htio bih da vjerujem ma ne mogu.



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