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Skribent: ole bjørn
Emne: Re: Agnostikere er ateister uden nosser
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Du fatter det stadig ikke, Jeppe.
Intet har bevæget gennem verdensrummet med en hastighed over lysets. Forsøget handlede om at måle, om entanglement sker spontant, eller med en tidsforsinkelse, hvilket kunne belyse om universet er ikke-lokalt eller indeholder skjulte variabler. Hvad man har registreret er, at der måske er en lille tidsforsinkelse, som kunne indikere at et signal kunne bevæge sig gennem andre dimensioner end vort firedimensionale rumtidskontinuum.
Målingen viste, at hvis der overhovedet er en tidsforsinkelse, så er den så lille, at det mindst ville modsvare en hastighed i vores univers på over 3 milliarder km/sek. Men der bevægede sig hverken bosoner eller bølger gennem rummet.
Du fatter ikke en brik af relativitetsteorien. Overlyshastigheder er en fysisk umulighed, og det er derfor du i sciencefiction-film ser rumskibe forsvinde, når de skifter til warp-hastigheder. De forsvinder ind i andre dimensioner, dem som du benægter eksistensen af.
Med din uvidenhed om fysik vil du ikke kunne forstå Daniel Salart's originale meddelelse fra Geneve, som blev offentliggjort i "Nature", men du får den alligevel her for en god ordens skyld. Correlations are generally described by one of two mechanisms: either a first event influences a second one by sending information encoded in bosons or other physical carriers, or the correlated events have some common causes in their shared history. Quantum physics predicts an entirely different kind of cause for some correlations, named entanglement. This reveals itself in correlations that violate Bell inequalities (implying that they cannot be described by common causes) between space-like separated events (implying that they cannot be described by classical communication). Many Bell tests have been performed1, and loopholes related to locality2, 3, 4 and detection5, 6 have been closed in several independent experiments. It is still possible that a first event could influence a second, but the speed of this hypothetical influence (Einstein's 'spooky action at a distance') would need to be defined in some universal privileged reference frame and be greater than the speed of light. Here we put stringent experimental bounds on the speed of all such hypothetical influences. We performed a Bell test over more than 24 hours between two villages separated by 18 km and approximately east–west oriented, with the source located precisely in the middle. We continuously observed two-photon interferences well above the Bell inequality threshold. Taking advantage of the Earth's rotation, the configuration of our experiment allowed us to determine, for any hypothetically privileged frame, a lower bound for the speed of the influence. For example, if such a privileged reference frame exists and is such that the Earth's speed in this frame is less than 10-3 times that of the speed of light, then the speed of the influence would have to exceed that of light by at least four orders of magnitude.
Med rysten-på-hovedet hilsen
Ole Bjørn ;)
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