General / Off-Topic Speed of light slowed !??

I've just read that as well. It is indeed very interesting.

How it will transcribe to the real world is not clear yet. One that does spring to mind is the supposed method of long distance space travel featured in Blake's 7, based upon Time Distortion, I don't know if this is what you were thinking about.

I have a feeling it may be seen, in future years, as a game changer.
 
Absolutely. I am not aware of Blake 7's time distortion.

Something else to show people when they come with the (in my view naive) argument that interstellar travel is categorically impossible "as the distances are too large."

What they miss out is "...with current technology."

Sure this doesn't prove anything but it's another chink away at our current world view and another glimpse into future possibilities.
 
Absolutely. I am not aware of Blake 7's time distortion.

Something else to show people when they come with the (in my view naive) argument that interstellar travel is categorically impossible "as the distances are too large."

What they miss out is "...with current technology."

Sure this doesn't prove anything but it's another chink away at our current world view and another glimpse into future possibilities.


Almost anything is possible. Including interstellar travel.

What is not possible, is exceeding light speed.

The notion of distorting time to allow apparent increases was proposed a good while ago now, I believe in the 1950s, though it could have been before. It involves creating a envelope within which time will pass differently.

A separate variation is based upon the observation that time itself is a product of the expansion of the universe. If an envelope, somehow insulated from time, (possibly, insulated from gravity, if it is ever possible to control gravity) were created and what is within were projected back along the exact path from which the universe had expanded, then allowed to proceed to the originally intended destination, it could, in theory, arrive before it was sent!

The problem with all theories based upon time distortion is they only work with inanimate objects. A second, rather more difficult problem is a supposition. The amount of matter in the universe is fixed. It cannot be created or destroyed, only converted from one form to another. If something is sent to an earlier point, however briefly, momentarily, there will be more matter in the universe at that point and momentarily, less at the present point. That may defy an as yet, unknown law of physics. It certainly would seem apparent that there must be reason why the total matter never varies.
 
Interesting stuff and right up my street :)

I'm not sure if time distortion is similar to wormholes or quantum tunneling in some way? Not looked into it.

Never say never in physics, ;) At a guess I'd put money on faster than light travel (or crossing it) actually being possible, but accept that within the current understanding of physics it isn't as you say (or rather, we can't *cross* the FTL barrier because FTL is technically possible if already travelling FTL I believe).

To continue with the open mindedness I'd question the standard notion that energy cannot be created too, within this universe. After all the big bang came from nothing, and thus came out of nothing. Unless we evoke some other dimension or bubbling sea of somethingness from whence it came... in which case yes energy can only change form, but we then have to expand our definition of universe to include a much deeper reality. If we don't and we limit it to spacetime in this material reality we call the universe we have to concede that it can be created. ! I'm losing myself in mindless rambling.

I wish I could have a chat with a life form several million years more advance than me, one who'd regard us as backwards as cavemen! :p (I'm not saying they exist :) )
 
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Interesting stuff and right up my street :)

I'm not sure if time distortion is similar to wormholes or quantum tunneling in some way? Not looked into it.

No, it isn't. Worm homes are based upon the observation by Einstein that space is bent or curved. The reasoning is that, if it is curved, and the curve can be dramatically increased, it may be possible to take a short cut in the way that the distance of a circumference is greater than the distance of the diameter. It became popular because it was used quite extensively in Star Trek.

I don't know of any main stream research into the notion. Interesting, but lacking any basis to form a theory I'm afraid.

I'm going to have to chicken out with Quantum Mechanics I'm afraid as my knowledge doesn't go that far. Someone I know and who certainly does understand Quantum Mechanics told me that quantum mechanics describes possibilities, not likelihood. I did a quick search and found this interesting video which seems to bear things out quite well. https://www.youtube.com/watch?v=cTodS8hkSDg


I'd put money on faster than light travel (or crossing it) actually being possible, but accept that within the current understanding of physics it isn't as you say (or rather, we can't *cross* the FTL barrier because FTL is technically possible if already travelling FTL I believe).

To continue with the open mindedness I'd question the standard notion that energy cannot be created too, within this universe. After all the big bang came from nothing, and thus came out of nothing. Unless we evoke some other dimension or bubbling sea of somethingness from whence it came... in which case yes energy can only change form, but we then have to expand our definition of universe to include a much deeper reality. If we don't and we limit it to spacetime in this material reality we call the universe we have to concede that it can be created. ! I'm losing myself in mindless rambling.

I wish I could have a chat with a life form several million years more advance than me, one who'd regard us as backwards as cavemen! :p

I'm sorry but that is incorrect. The big bang started at a point of infinite singularity. I believe it was Cark Sagan who started that notion that it came out of nothing. He reasoned that a point of singularity must have come from something and the only reasonable explanation, according to him was that it must have come out of nothing.

There is another explanation as to its origins. The pulsating universe, that eventually matter will simply collapse back in on itself in a big crunch. Unfortunately, no matter how the sums are done, there is simply not enough matter in the universe to bring on the big crunch. So the universe will continue to expand, essentially, for ever. (Actually, about 10trillionbetween 90 and 140 years. The higher figure seems to be more popular on this side of the pond. Americans seeming prefer the lower. Either way, the universe is only about 14 billion years old now, so it's a long long way to go.)

The simple fact is, there is no way of knowing what came before the big bang. What created the singularity. I will put one point to you to add to the confusion. The universe and everything in it is just too perfect. In a system based upon chance, there should be many many more errors. But everywhere, there is too much perfection. Form the mechanics of gravity, to the invariable assembly and reassembly of atoms. Life is equally perfect. Humans are some of the most complex organisms ever created, yet they are replicated, over and over, with near perfection, each time. Errors happen. Deformities, mutations. But these are a very tiny proportion of the total of successful births.

It's impossible to say why that perfection exists. At this time in human intellectual evolution, we seem to be caught between tow equally dogmatic and pig headed groups, one claiming some sort of supernatural being who we can't see and only they are aware of, the other claiming it is all just too complicated and only they are qualified to hold an opinion. It's actually very very funny. But does caution mortals such as you and I away from the weirdos who sell science or religion. Since they are both opposite side of the same worthless coin.

There is one more aspect though which might be worth considering. The nature of matter is governed by the density, the velocity and the spin. At this stage, the so called Stelariferous age, the universe is still accelerating and spinning. That acceleration and spin is affecting the four forces in debatable ways. Now, as the acceleration continue to increase, the nature of how matter acts may alter, while the expansion reduces the mean density of the universe. As the universe slows, it will almost certain go through a period when its acceleration returns, for a time to something similar to what is occurring now. The density of the universe will be a small proportion of what we have now. the Spin is anyone's guess We might speculate on the nature of matter at that future point. Could it once again create the sort of conscious notions that currently exist on the earth? Some intelligence in the long distant future, being aware of us, perhaps managing to even capture and observe images by means which we cannot conceive of. Could it be that when existence as we know it finally ceases,, possibly, around 40% of the total life of the universe, all the stored knowledge accumulated may survive in a material sense and be adopted by future conscious existance, gibing it an enormous head start?
 
Good post mate. Yes I absolutely agree that the big bang coming out of nothing is incorrect so no need to apologise :) That is precisely why I made the point: to demonstrate as I say that one needs to move beyond that, but it's quite commonly believed. Whether that is a pulsating universe or membrane theory or one of a host of other theories the fact is, as I say, we (not you and I, but the public generally) have to be *open* to expanding our definition of the universe as more than just a bunch of matter that exploded out of nothingness.

Again good points about what some call the "designer universe" and which leads many eminent physicists either to suggest there may be a Higher Being or infinite parallel universes. I don't which is more weird! As you say, who knows!

Good speculative questions too mate :)

I'm no expert on the QM or astrophysics, just have an interest (with an open mind :) ).

My first degree was neuroscience and that interests me: you write about consciousness, and that is equally fascinating to me, and according to some neuroscientists and even physicists not a different subject to physics at all in that they may very well be completely interconnected: I remember a BBC documentary on the universe ending with something like "perhaps the whole purpose of the existence of the universe is so that consciousness could observe it" or something like that, and certainly the mindboggling findings of QM suggest a strange interplay between matter and consciousness that seems inseparable.

This science stuff gets weirdly "spiritual" the deeper one gets hehe :)

End of my mindless rambling. !
 
I recall reading about membranes a few years ago in one of Stephen Hawking's books. To be honest, I didn't give it the concentration it deserved.

One thing that did occur to me was that the Greater are actually addressing this issue. From what I recall about branes, it was still in the speculative stage. Never the less, it does present some possibilities to perhaps explain some of the deeper mysteries. Though why everything is is so perfect seem to remain unaddressed as yet.

It has been suggested that since the universe is attempting to achieve zero entropy and by current understanding, will eventually achieve it, that the universe seeks perfection. That's an interesting proposition, in the case of life, the perfection has been achieved extraordinarily fast. Even looking at human social development. Humans have existed for perhaps 2 to 4 million years, yet it is only in the last 35000, they have started to settle down and develop, first agriculture then technology. Then for thousands of years, social development continued but technological development moved forward in only a few minor areas, until suddenly, a little over 300 years ago, bang into the modern era.

It would indeed be interesting to examine life forms that have developed outside the Earth, but that would appear to be against a different set of rules.

Now if I were a suspicious type, I'd be thinking the dice are kinda stacked here. :eek:
 
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