There is an ongoing PBS TV series (additionally numerous books and also a website) known as “Closer To Truth”. It is hosted by means of neuroscientist Robert Lawrence Kuhn. He’s featured in one-on-one interviews and panel discussions with the cream of the cream of state-of-the-art cosmologists, physicists, philosophers, theologians, psychologists, and so on. On all of the Big Questions surrounding a trilogy of large topics – Cosmos; Consciousness; God. The trilogy collectively handled fact, area and time, thoughts and awareness, aliens, theology and on and on and on. Here are some of my remarks on certainly one of the general subjects included – Is time tour feasible?
# Is time tour feasible? Actually, I individually do not consider time exists. Change exists, and time is just our measurement of charge of change. IMHO time is just a concept. Time is a mental construct that allows us to come to phrases with an alternate. Some cosmologists say that time was created at the Big Bang as if time were a factor with substance and shape, but I project them to actually create some time in the front of their peers or maybe a TV audience or at least produce a theoretical equation or that might create time. In the meantime, here’s a trilogy of points.
First, the concept of time journey is one of these a laugh parts of physics. Whether authentic or now not, it is unique to play the ‘what if’ recreation. If not anything else, the idea makes or forces one to think about the nature of fact.
Secondly, Einstein and others have postulated that point journey is a theoretical fact and I’m not of their sort of league that I can dispute the theories. I’ll leave that to others who recognize the sector internal and out.
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But thirdly, and most importantly, you may never genuinely be within the future or the beyond, simplest in the future or the past compared to where and when you at the moment are. In other words, regardless of the way you slice and cube things, you exist within the wherein-ever and within the every time in that wherein Ever’s or whenever’s NOW or in different phrases inside the gift. You can not literally be in any future or in any past because you handiest revel in the NOW that’s the prevailing. If you should somehow journey returned one hour, you’ll still revel in matters as belonging to NOW. If you sleep for one hour then awaken, you’re inside the destiny relative to when you went to sleep, however you continue to find yourself in the NOW.
# Is time travel possible? The answer is each sure and no. Yes, we are able to journey into the future at one second per 2nd, we try this anyway whether or not we find it irresistible or no longer. Yes, we can journey into the future at a slightly faster fee by means of going to sleep or otherwise having our experience of focus, our attention of price of exchange (that is what time absolutely is or measures) incapacitated. You get drunk and pass out and the next element you already know you’re 12 hours into the future. Yes, we will journey into the future as mentioned by way of Einstein’s dual ‘paradox’ where one dual travel at a completely high fee of speed outward sure, stops and returns to home base, while the stay at domestic dual, properly, stays domestic. Upon their reunion the traveling dual reveals their stay at domestic twin to be ways older, so the traveling dual has traveled into the future more unexpectedly than could otherwise be the case. Yes, you can travel again in time, in theory, in line with the obvious theoretical houses that wormholes or black holes may have. No, you can not travel to the beyond due to all of those nasty paradoxes. I like the variant at the grandfather paradox wherein you tour lower back just one hour into the past and shoot your self-lifeless. That’s a singular manner of committing suicide! The other paradox I like is whilst you go returned in time to have Shakespeare autograph your reproduction of “Hamlet”. Shakespeare isn’t always home but the maid guarantees to have him autograph your e book while he returns.
Alas, your timing is barely off and Shakespeare hasn’t but written “Hamlet”, so whilst he gets your replica from his maid to autograph, he reads it, and after you return to Shakespeare’s home and get hold of back your now autographed replica and return home to your very own time, Shakespeare now writes “Hamlet”. The paradox is, wherein did “Hamlet” come from on account that Shakespeare only wrote it after he had already seen your reproduction. No, you cannot tour back to the past because if that were possible there would be hoards of time-touring tourists who went again in time to witness some vital ancient occasion or other. No hoards of photograph-snapping tourists have ever been documented being a gift at Custer’s Last Stand, the Battle of the Alamo, the sinking of RMS Titanic, or anybody of thousands of similar historical activities. Yes, you could tour lower back in time but best into a parallel universe. If you shoot yourself but it’s far another you in some other universe, no paradox arises. You journey returned in time to have Shakespeare autograph your reproduction of “Hamlet” but in that parallel universe, Shakespeare can now write “Hamlet” primarily based on your copy and no paradox effects. However, the only factor I locate interesting is that in case you turn out to be in the future, or inside the past, are you virtually within the future or the past? No, the best time you can exist in is the present, your proper here and NOW time. It might be a distinct time from what you previously knew, however still anywhere and every time you exist, you handiest exist in the NOW.
# Is time journey feasible? It may want to already be the case that time tour has been documented on the quantum degree despite the fact that that could be open to interpretation. Before I get to the specifics, I just need to factor out that with respect to the laws, principles, and relationships of physics, time is invariant. Operations in physics remain invariant in time whether or not time is shifting as we typically perceive it (beyond to destiny) or returned to the front (future to beyond). For example, gravity might function as in step with its regular clutch-it self in a world in which time flowed backward. There’s many an operation one ought to film that once the film was run backward, one wouldn’t be any the wiser. Tree branches blowing in the wind involves mind, or the coming collectively, collision, and rebounding or separation of billiard balls. Okay, having set up that in terms of physics, physics would not care which course time is flowing, there will be no violations in the one’s legal guidelines, concepts and relationships of physics destiny to beyond, we now come to the, not on time double slit experiment.
In the regular double slit experiment, you’ve got an electron gun that fires one electron particle at a time, such that one electron completes its journey earlier than the subsequent one is fired, at aspect-via-facet slits. If one or the opposite slit is open, the only-at-a-time electrons bypass via the open slit to a detector screen at the back of the slits. The detector display screen receives hit in nearly the same spot every time after every and each electron particle passes via the single open slit. That is uncomplicated. If both slits are open, the electron shape-shifts into a wave (how I do not know), passes through each slit (as most effective a wave can), morphs lower back right into a particle and hits the detector screen. The difference is that once enough electrons have been fired, and have exceeded or waived via the double slits, the hits on the detector display aren’t in just one or spots however all-over-the-map, albeit all-over-the-map in a conventional wave interference sample. Okay, that is the traditional test.
Now we do a version of the subject, the behind schedule double slit test. Electrons are fired one-at-a-time, with both slits wide open. An all-over-the-map classic wave interference pattern should appear at the everyday detector display screen after enough electrons were fired. However, further to the everyday detection display screen, there are other detectors positioned at the back of the regular detector display screen which might be every in an exact line-of-sight with each of the 2 slits. The electron is fired. It morphs right into a wave and passes through both slits then morphs returned right into a particle. But before the electron, which has already passed through each slit, can hit the detector display, the detector display is eliminated to show behind it the alternative two line-of-sight detectors.
Now presumably once the electron has handed even though the double slits it’s too little too late to alternate its mind approximately where it’ll hit. Only a tiny few need to be detected by way of the 2 line-of-sight detectors aligned with the 2 slits. Alas, every and every electron may be detected by one or the opposite of the road-of-sight detectors. It would appear that the electron CAN change its mind after it has already long past through each slit and as a substitute seem to have gone thru one or the opposite of the 2 slits. One interpretation is that the electron, after having surpassed through each slit, realized the gig becomes up, traveled lower back in time, retraced its course and handed via one or the other slit.
As an apart, the past due Nobel Laureate Richard Feynman referred to that the double slit experiment went to the coronary heart of quantum weirdness. I mention this as it changed into the equal Richard Feynman who recommended that a positron (an anti-electron) become just a normal electron that changed into going backward in time.
Firstly, there may be Stephen Hawking’s concept of a Chronology Protection Conjecture which postulates that there is some as yet undiscovered regulation of physics which prevents time journey to the past and for that reason makes the cosmos a safe location for historians to strut their stuff.
Thirdly, possibly it slows touring ‘tool’ is constant at a few sort of celestial coordinates. Because everything within the cosmos is in motion when you re-emerge into that cosmos after beginning on a time traveling adventure, whilst you will be at those equal constant celestial coordinates the relaxation of the cosmos could have moved to differing celestial coordinates. So, if you start out in London you may not emerge as in London on down, or up, the time journeying track. Finally, the idea of your, or the future or of the past or your past is simplest relative to what you pick as a few fixed point. If you select your date of a start as that constant factor, then honestly you are now inside the destiny relative on your date of birth. If you select the concept of an ever ongoing NOW, the present, as a fixed factor, you are neither within the future or the beyond relative to the NOW nor will you ever be. That, of course, would not suggest you cannot recall your past, what existed before your NOW (despite the fact that the beyond in standard is extra summary) or plan for your destiny after your NOW (even though the future in the standard is beyond your manage).