How does days travel come true after all?

Simple Minds - I travel 1980

How does days travel come true after all?
The sort of hope can embrace parting lover to perhaps prevent disaster happening to wait thought a moment again, a lot of continual all the time incentive people are held in the arms holding let days flow backwards, return the think of a way in the past. This kind of circumstances appears again and again in sci-fi, and a few scientists also claimed to realize travel of this kind of days likely in the past.
Although be in science fiction clue again and again depict a lot of methods that return the past, do not cross these methods deliberate of unable to bear, we follow everybody one case with respect to the attempt here analytic a variety of problems that days travel.

Space of the 4th dimension

In physics, time is regarded as and long, wide, tall same thinking is spent will describe. Come to another place from a place when you, you are not the change that experienced dimensional dimension to spend only, and the change that experienced time dimension to spend likewise.
Space and time kink are together, form be called spatio-temporal 4 dimension space. Spatio-temporal and OK the stretch staple that considers a 4 dimension, when quality of some kind of thing air is greater at that time, can cause spatio-temporal bend. Spatio-temporal bend will make the object moves along bent method, of this kind of space bending is the gravitation that we know.

Spend from dimensional dimension on for, the individual can advance or back down, but time does not have the character that moves to freedom more so however. In 4 dimension spatio-temporal in, we can be only in time ceaseless and forward.

Days channel
About the method that days travel we had heard of many. Days channel is a passageway that links two spatio-temporal section. These area may be two completely different universes, or two parts of an universe. Material can carry channel of this kind of days, from spatio-temporal area reachs another area
Days channel since did not come, also was in the past. Nevertheless we need special caution, because drive passes through the aircraft of days channel, not be now far our technical condition can be competent. To can punch in spatio-temporal structure and pass, the likelihood needs have the aid of the energy at a star, perhaps lose energy.

Cosmic bowstring

Another popularity that travel about days is academic, bowstring of the universe that be called. Cosmic bowstring is one is in the universe that expands ceaselessly, the passageway of a narrow energy with patulous across. From the area that the remain in inchoate universe comes down, be thought to have much material, can curve them around spatio-temporal.
Cosmic bowstring is boundless, also perhaps be a loop, without terminus. From theoretic tell, such two parallel bowstring, can be the spatio-temporal generation all round bends strongly below certain circumstance, make time travel calls a likelihood.
This kind of method perhaps exceeds civilized group ability to come true, till now our mankind is civilized group merely, because we are incontrollable still even the sources of energy of own heavenly body.

At present unworkable

Theoretic tell, can say those who return the past to some things are OK, but the possibility that the mankind returns the past is done not have almost. Additional, although a few scientists think days travel is reasonable,talk going up is feasible, but the method that did not implement.
If physics can find the big unify theory that solves all problems, we can solve all physics difficult problem, OK and real clear days trip is feasible. Find theory of this kind of big unify, tell the theory that masters at present than us to want from the technology god-given much, do not want a hope to be able to find the solution very quickly.

Since Weiersi wrote down 1895 " time machine " after the novel of this win universal praise, days travel is the popular theme of sci-fi all the time. But is this built really,come out? Can we build a ministry to the machine conveys the person to in the past or did not come really?

In the past tens of in year, days travel is with science the hall is touched all the time not above, but in recent years, this topic has begun to ferment between academic physicist, its motive is amused partly, thinking days travel is pretty is interesting actually, but this research also has its serious one side. Understanding is causal, the physical theory that formulates unify to Wu Chuang is a key. If do not suffer bounds days to travel to become a possibility unexpectedly, even is the principle goes up so that connect only, criterion the essence of this unify theory also can be affected thoroughly.

We are to the optimal understanding of time come from the theory of relativity of Einstein. Before the theory of relativity comes out, think time is commonly already absolutely general is comfortable, no matter located physical environment why, it is right everybody is same. In its special relativity, einstein proposal, the time-interval of two event that we survey, how does meeting be decided by move at observer. Important is, two observer that do different exercise are experienced same two incident, the time that elapses between this two incident is not same.


3 move that make machine of moth hole time (not very is easy)

1. is searched or make hole of a moth a kind of channel that this is the two places in join space. Large moth hole is put naturally perhaps in the depth of Wu Tai air, be big thunder is vestigial. Or we are forced to take subatom moth aperture to make up the number. They may exist naturally (someone says them to appear to disappear again ceaselessly in your my week by) , or it is artifical (place of for example here is envisaged, make by particle accelerator) . These small moth aperture must magnify useful size, the energy that the space lets expand after for example uses similar big thunder constant

2. makes moth aperture stabilizes infuse to lose energy, for example is used this rice effect (Casimireffect) wait for quanta means, make question mark or object be able to safety passes through moth aperture. Moth aperture tendency becomes infinity of a density or the point close to infinity at extruding, and negative energy can defy this trend; Those who change character, it can avoid moth aperture to become a black hole.

Holiday of aperture of 3. daggle moth sets to have height the spacecraft of advanced science and technology, two buccal departure of aperture of meeting general moth. One starts to talk or permit buy to put among them express at neutron star near the face. Neutron star is exceeding the compact, heavenly body that stubborn weighs field of force greatly, this stubborn weighs field of force to be able to make time passes much slower. Pass more quickly by the in moth aperture another mouth place between Wu Shi, this two start to talk to go up to be parted come in space and time.

Return tomorrow, after all but can?

Speed is a method that allows time to jump forth, and gravity is another method. In the broad sense the theory of relativity of Einstein, he predicted gravitational meeting lets time slow. Clock is met on attic a bit some faster than going in basement, because basement is close to the earth‘s core relatively, it is to be in the heavy field of force that compares stubborn so. Manage together, clock runs more quickly than be on the ground in aerospace. Again, this effect is extremely tiny, but we already applied accurate clock to be measured directly. In fact, these time twist effect are in global location system must plan into, otherwise can jack-tar, cabbies and cruise missile discover him unexpectedly deviate road? A lot of kilometers.

In face of neutron star catalogue, gravitational field stubborn attends a meeting let time compare earthly time defer 30% . See the event that produces here from this kind of heavenly body, resemble taking kinescope like turning quickly forth. The black hole is the extreme example of time twist more: In it apparently, time is fall asleep ball of opposite Wu De, if you fall into the word that go from the side the black hole,this expresses, inside a paragraph of small time that arrives at the surface in you, the universe outside already experienced the eternity of time brings a great change to the worlds. Look from the outside so, the area near the black hole is the outside changing ground of time simply, accordingly, if have an astronaut can black hole of press close to again retrace and a hair scot-free word (I must say, this is very the heroic act of type of heart of Tang Ji scold) , then his Ying Keyue is entered far future.