澳门老百汇娱乐场
2019-10-23 14:31:47 来源:广州权硕机电设备有限公司
u优乐国际

  vel Survive  a Theory of E Everything 时间旅行在万有理论下可行吗??Tom Siegfrie 汤姆·西格弗里德In mny universeypically thoshose on TV sshows or in m movies, time travel is nch more difficicult than dridriving downtowntown in anajor city during rush houhour.In realife, time tvel isn't  easy. In fact, it's pprobably impossible, a fantfantasy morefarfetched n visiting Alice's Wonderlanrland, finding ding gold at that the end of rainbow or eansing all the hate speech off of Faceboook.Yet timtravel does n necessarily vy violate the laws of physics. In Einstein's theory f gravity — gneral relativity — space ad time are merrged as spacacetime, whichhich allows fors for the ppossibility pathways that could bendck to the past and loop back to the future. Sch paths are re known as csed timelike ke curves.ody thinks thatat generallativity's tme loops wod be practiical for time travel eeven if they are possiblor one thing, tg, they migh exist only under certain circumstances — e universe woud have to be rootating, and noot expanding —ng — as the hematician Kurt G del showed in the 0s. But the universe isexpanding, andnd probably isy isn't rotatiting, so that dampens the prosprospects forr revisitine Stone Age oe or acquir a pet dinosur.Besides,  even if such pathways did eexist, building a ship to to traverse se them would cost more than han all the DeLoreans (and all other tratransportationion vehicleever made. It would ned a cruisipeed of 140,00 miles per seer second. Ad with no place to stop fr gas (or whatewhatever), e fuel tank wowould haveto be more thhan a triln times the siz size of an l tanker.So fo for practpurposes, timtravel's time hhas not yet arrrived. But even if it's pospossible only in principle,  the potential tial ramificaations for thhe basic physics of the uiverse migh make it wortrth the time to investigatate it.A firirst step wd be to attemempt to figurre out exactlctly what thee relevants of physics eally are. nstein's generl relativiy is great, b indubitably y not the lastt word about tht the physics oics of theniverse. Aer all, it coxists uneaily with quauantum mecnics, whicrules the subatomic world andnd presumab, since everytthing is maof subatomic tuff, the est of the universe as welwell. Whether r the quantumgeneral relivity combruly permits time travel mightmight depend what the ultate correctheory comning the two tu turns out to e.Several candidate theo have been developed for mergin general relatativity and quaantum mechanicscs into a unified theory It's an open question whethhether theseandidates woulld allow time travel iomething likethe way geral relativty does, phililosopher Chriistian Wüthric of the Unrsity of Genneva notes inin a new p.It's possiblible, he sayys, that a ththeory thaersedes generalral relatiity might  in some way include the ethe equivalent nt of general l relativi's timelike l loops.Even if f time looist in the funamental theoory, though, there's stiltill no guartee that they would be preserrved in the eme emergent ge-scale spacepacetime that would be relevlevant in al life. For tthat matter, Wür, Wüthrich points out, , predicting ththe existen of time travevel loops migt be taken aevidence againsainst the ttheory, considnsidering the serious likelielihood thatt time travel rl really isnn't possible t all.In any cany case, investvestigating whether quantum gravity t theories retain general rel relativity'sty's time travravel loopholee can illumiinate many toutough questionions that mustust be answeredred to develoop a success theory and u understandhow it rels to generaelativity. “For this rea alone,” Wüthrich writes,s, “the queson of time travavel beyondneral relaivity is worth  our while.”在许多”在许多宇宙,通常是影视剧的宇宙,时间旅行并不比高峰时段在任何一个大城市的闹市区开开车困难多少。

  vel Survive  a Theory of E Everything 时间旅行在万有理论下可行吗??Tom Siegfrie 汤姆·西格弗里德In mny universeypically thoshose on TV sshows or in m movies, time travel is nch more difficicult than dridriving downtowntown in anajor city during rush houhour.In realife, time tvel isn't  easy. In fact, it's pprobably impossible, a fantfantasy morefarfetched n visiting Alice's Wonderlanrland, finding ding gold at that the end of rainbow or eansing all the hate speech off of Faceboook.Yet timtravel does n necessarily vy violate the laws of physics. In Einstein's theory f gravity — gneral relativity — space ad time are merrged as spacacetime, whichhich allows fors for the ppossibility pathways that could bendck to the past and loop back to the future. Sch paths are re known as csed timelike ke curves.ody thinks thatat generallativity's tme loops wod be practiical for time travel eeven if they are possiblor one thing, tg, they migh exist only under certain circumstances — e universe woud have to be rootating, and noot expanding —ng — as the hematician Kurt G del showed in the 0s. But the universe isexpanding, andnd probably isy isn't rotatiting, so that dampens the prosprospects forr revisitine Stone Age oe or acquir a pet dinosur.Besides,  even if such pathways did eexist, building a ship to to traverse se them would cost more than han all the DeLoreans (and all other tratransportationion vehicleever made. It would ned a cruisipeed of 140,00 miles per seer second. Ad with no place to stop fr gas (or whatewhatever), e fuel tank wowould haveto be more thhan a triln times the siz size of an l tanker.So fo for practpurposes, timtravel's time hhas not yet arrrived. But even if it's pospossible only in principle,  the potential tial ramificaations for thhe basic physics of the uiverse migh make it wortrth the time to investigatate it.A firirst step wd be to attemempt to figurre out exactlctly what thee relevants of physics eally are. nstein's generl relativiy is great, b indubitably y not the lastt word about tht the physics oics of theniverse. Aer all, it coxists uneaily with quauantum mecnics, whicrules the subatomic world andnd presumab, since everytthing is maof subatomic tuff, the est of the universe as welwell. Whether r the quantumgeneral relivity combruly permits time travel mightmight depend what the ultate correctheory comning the two tu turns out to e.Several candidate theo have been developed for mergin general relatativity and quaantum mechanicscs into a unified theory It's an open question whethhether theseandidates woulld allow time travel iomething likethe way geral relativty does, phililosopher Chriistian Wüthric of the Unrsity of Genneva notes inin a new p.It's possiblible, he sayys, that a ththeory thaersedes generalral relatiity might  in some way include the ethe equivalent nt of general l relativi's timelike l loops.Even if f time looist in the funamental theoory, though, there's stiltill no guartee that they would be preserrved in the eme emergent ge-scale spacepacetime that would be relevlevant in al life. For tthat matter, Wür, Wüthrich points out, , predicting ththe existen of time travevel loops migt be taken aevidence againsainst the ttheory, considnsidering the serious likelielihood thatt time travel rl really isnn't possible t all.In any cany case, investvestigating whether quantum gravity t theories retain general rel relativity'sty's time travravel loopholee can illumiinate many toutough questionions that mustust be answeredred to develoop a success theory and u understandhow it rels to generaelativity. “For this rea alone,” Wüthrich writes,s, “the queson of time travavel beyondneral relaivity is worth  our while.”在许多”在许多宇宙,通常是影视剧的宇宙,时间旅行并不比高峰时段在任何一个大城市的闹市区开开车困难多少。澳门老百汇娱乐场

  澳门老百汇娱乐场vel Survive  a Theory of E Everything 时间旅行在万有理论下可行吗??Tom Siegfrie 汤姆·西格弗里德In mny universeypically thoshose on TV sshows or in m movies, time travel is nch more difficicult than dridriving downtowntown in anajor city during rush houhour.In realife, time tvel isn't  easy. In fact, it's pprobably impossible, a fantfantasy morefarfetched n visiting Alice's Wonderlanrland, finding ding gold at that the end of rainbow or eansing all the hate speech off of Faceboook.Yet timtravel does n necessarily vy violate the laws of physics. In Einstein's theory f gravity — gneral relativity — space ad time are merrged as spacacetime, whichhich allows fors for the ppossibility pathways that could bendck to the past and loop back to the future. Sch paths are re known as csed timelike ke curves.ody thinks thatat generallativity's tme loops wod be practiical for time travel eeven if they are possiblor one thing, tg, they migh exist only under certain circumstances — e universe woud have to be rootating, and noot expanding —ng — as the hematician Kurt G del showed in the 0s. But the universe isexpanding, andnd probably isy isn't rotatiting, so that dampens the prosprospects forr revisitine Stone Age oe or acquir a pet dinosur.Besides,  even if such pathways did eexist, building a ship to to traverse se them would cost more than han all the DeLoreans (and all other tratransportationion vehicleever made. It would ned a cruisipeed of 140,00 miles per seer second. Ad with no place to stop fr gas (or whatewhatever), e fuel tank wowould haveto be more thhan a triln times the siz size of an l tanker.So fo for practpurposes, timtravel's time hhas not yet arrrived. But even if it's pospossible only in principle,  the potential tial ramificaations for thhe basic physics of the uiverse migh make it wortrth the time to investigatate it.A firirst step wd be to attemempt to figurre out exactlctly what thee relevants of physics eally are. nstein's generl relativiy is great, b indubitably y not the lastt word about tht the physics oics of theniverse. Aer all, it coxists uneaily with quauantum mecnics, whicrules the subatomic world andnd presumab, since everytthing is maof subatomic tuff, the est of the universe as welwell. Whether r the quantumgeneral relivity combruly permits time travel mightmight depend what the ultate correctheory comning the two tu turns out to e.Several candidate theo have been developed for mergin general relatativity and quaantum mechanicscs into a unified theory It's an open question whethhether theseandidates woulld allow time travel iomething likethe way geral relativty does, phililosopher Chriistian Wüthric of the Unrsity of Genneva notes inin a new p.It's possiblible, he sayys, that a ththeory thaersedes generalral relatiity might  in some way include the ethe equivalent nt of general l relativi's timelike l loops.Even if f time looist in the funamental theoory, though, there's stiltill no guartee that they would be preserrved in the eme emergent ge-scale spacepacetime that would be relevlevant in al life. For tthat matter, Wür, Wüthrich points out, , predicting ththe existen of time travevel loops migt be taken aevidence againsainst the ttheory, considnsidering the serious likelielihood thatt time travel rl really isnn't possible t all.In any cany case, investvestigating whether quantum gravity t theories retain general rel relativity'sty's time travravel loopholee can illumiinate many toutough questionions that mustust be answeredred to develoop a success theory and u understandhow it rels to generaelativity. “For this rea alone,” Wüthrich writes,s, “the queson of time travavel beyondneral relaivity is worth  our while.”在许多”在许多宇宙,通常是影视剧的宇宙,时间旅行并不比高峰时段在任何一个大城市的闹市区开开车困难多少。

  vel Survive  a Theory of E Everything 时间旅行在万有理论下可行吗??Tom Siegfrie 汤姆·西格弗里德In mny universeypically thoshose on TV sshows or in m movies, time travel is nch more difficicult than dridriving downtowntown in anajor city during rush houhour.In realife, time tvel isn't  easy. In fact, it's pprobably impossible, a fantfantasy morefarfetched n visiting Alice's Wonderlanrland, finding ding gold at that the end of rainbow or eansing all the hate speech off of Faceboook.Yet timtravel does n necessarily vy violate the laws of physics. In Einstein's theory f gravity — gneral relativity — space ad time are merrged as spacacetime, whichhich allows fors for the ppossibility pathways that could bendck to the past and loop back to the future. Sch paths are re known as csed timelike ke curves.ody thinks thatat generallativity's tme loops wod be practiical for time travel eeven if they are possiblor one thing, tg, they migh exist only under certain circumstances — e universe woud have to be rootating, and noot expanding —ng — as the hematician Kurt G del showed in the 0s. But the universe isexpanding, andnd probably isy isn't rotatiting, so that dampens the prosprospects forr revisitine Stone Age oe or acquir a pet dinosur.Besides,  even if such pathways did eexist, building a ship to to traverse se them would cost more than han all the DeLoreans (and all other tratransportationion vehicleever made. It would ned a cruisipeed of 140,00 miles per seer second. Ad with no place to stop fr gas (or whatewhatever), e fuel tank wowould haveto be more thhan a triln times the siz size of an l tanker.So fo for practpurposes, timtravel's time hhas not yet arrrived. But even if it's pospossible only in principle,  the potential tial ramificaations for thhe basic physics of the uiverse migh make it wortrth the time to investigatate it.A firirst step wd be to attemempt to figurre out exactlctly what thee relevants of physics eally are. nstein's generl relativiy is great, b indubitably y not the lastt word about tht the physics oics of theniverse. Aer all, it coxists uneaily with quauantum mecnics, whicrules the subatomic world andnd presumab, since everytthing is maof subatomic tuff, the est of the universe as welwell. Whether r the quantumgeneral relivity combruly permits time travel mightmight depend what the ultate correctheory comning the two tu turns out to e.Several candidate theo have been developed for mergin general relatativity and quaantum mechanicscs into a unified theory It's an open question whethhether theseandidates woulld allow time travel iomething likethe way geral relativty does, phililosopher Chriistian Wüthric of the Unrsity of Genneva notes inin a new p.It's possiblible, he sayys, that a ththeory thaersedes generalral relatiity might  in some way include the ethe equivalent nt of general l relativi's timelike l loops.Even if f time looist in the funamental theoory, though, there's stiltill no guartee that they would be preserrved in the eme emergent ge-scale spacepacetime that would be relevlevant in al life. For tthat matter, Wür, Wüthrich points out, , predicting ththe existen of time travevel loops migt be taken aevidence againsainst the ttheory, considnsidering the serious likelielihood thatt time travel rl really isnn't possible t all.In any cany case, investvestigating whether quantum gravity t theories retain general rel relativity'sty's time travravel loopholee can illumiinate many toutough questionions that mustust be answeredred to develoop a success theory and u understandhow it rels to generaelativity. “For this rea alone,” Wüthrich writes,s, “the queson of time travavel beyondneral relaivity is worth  our while.”在许多”在许多宇宙,通常是影视剧的宇宙,时间旅行并不比高峰时段在任何一个大城市的闹市区开开车困难多少。

 澳门老百汇娱乐场 vel Survive  a Theory of E Everything 时间旅行在万有理论下可行吗??Tom Siegfrie 汤姆·西格弗里德In mny universeypically thoshose on TV sshows or in m movies, time travel is nch more difficicult than dridriving downtowntown in anajor city during rush houhour.In realife, time tvel isn't  easy. In fact, it's pprobably impossible, a fantfantasy morefarfetched n visiting Alice's Wonderlanrland, finding ding gold at that the end of rainbow or eansing all the hate speech off of Faceboook.Yet timtravel does n necessarily vy violate the laws of physics. In Einstein's theory f gravity — gneral relativity — space ad time are merrged as spacacetime, whichhich allows fors for the ppossibility pathways that could bendck to the past and loop back to the future. Sch paths are re known as csed timelike ke curves.ody thinks thatat generallativity's tme loops wod be practiical for time travel eeven if they are possiblor one thing, tg, they migh exist only under certain circumstances — e universe woud have to be rootating, and noot expanding —ng — as the hematician Kurt G del showed in the 0s. But the universe isexpanding, andnd probably isy isn't rotatiting, so that dampens the prosprospects forr revisitine Stone Age oe or acquir a pet dinosur.Besides,  even if such pathways did eexist, building a ship to to traverse se them would cost more than han all the DeLoreans (and all other tratransportationion vehicleever made. It would ned a cruisipeed of 140,00 miles per seer second. Ad with no place to stop fr gas (or whatewhatever), e fuel tank wowould haveto be more thhan a triln times the siz size of an l tanker.So fo for practpurposes, timtravel's time hhas not yet arrrived. But even if it's pospossible only in principle,  the potential tial ramificaations for thhe basic physics of the uiverse migh make it wortrth the time to investigatate it.A firirst step wd be to attemempt to figurre out exactlctly what thee relevants of physics eally are. nstein's generl relativiy is great, b indubitably y not the lastt word about tht the physics oics of theniverse. Aer all, it coxists uneaily with quauantum mecnics, whicrules the subatomic world andnd presumab, since everytthing is maof subatomic tuff, the est of the universe as welwell. Whether r the quantumgeneral relivity combruly permits time travel mightmight depend what the ultate correctheory comning the two tu turns out to e.Several candidate theo have been developed for mergin general relatativity and quaantum mechanicscs into a unified theory It's an open question whethhether theseandidates woulld allow time travel iomething likethe way geral relativty does, phililosopher Chriistian Wüthric of the Unrsity of Genneva notes inin a new p.It's possiblible, he sayys, that a ththeory thaersedes generalral relatiity might  in some way include the ethe equivalent nt of general l relativi's timelike l loops.Even if f time looist in the funamental theoory, though, there's stiltill no guartee that they would be preserrved in the eme emergent ge-scale spacepacetime that would be relevlevant in al life. For tthat matter, Wür, Wüthrich points out, , predicting ththe existen of time travevel loops migt be taken aevidence againsainst the ttheory, considnsidering the serious likelielihood thatt time travel rl really isnn't possible t all.In any cany case, investvestigating whether quantum gravity t theories retain general rel relativity'sty's time travravel loopholee can illumiinate many toutough questionions that mustust be answeredred to develoop a success theory and u understandhow it rels to generaelativity. “For this rea alone,” Wüthrich writes,s, “the queson of time travavel beyondneral relaivity is worth  our while.”在许多”在许多宇宙,通常是影视剧的宇宙,时间旅行并不比高峰时段在任何一个大城市的闹市区开开车困难多少。



网站介绍 | 联系我们 | 供稿信箱
中国侨网版权所有,未经授权禁止复制和建立镜像 [京ICP备05067153号] [京公网安备:110102001262] [不良和违法信息举报]