If time travel is possible, where tourists from the future?
There are many hypotheses about how time travel possible: through the wormhole, Tipler cylinder and another inspired by Einstein's theories.
Many scientists are taking this issue very seriously, among them - Stephen Hawking. Renowned physicist believes in the possibility of a scientific journey through time and even says he knows how to build a time machine. He also wondered: "If time travel is possible, where tourists from the future?" That's a good question, and we will try to answer it.
1. Why do we think that time travel vozmozhny
In the last century, scientists have proposed several theories suggesting the possibility to make the leap into the future. Back to the past, unfortunately, is much more complicated.
According to the general theory of relativity, the wormhole can serve as a bridge, the shortest path connecting two points of space-time. But there's a catch: when it found a way to create a wormhole, it will help to make the leap into the future, but in the past it would allow no further back than to the moment when it was created.
Another option - the use of so-called time dilation: for the moving clock, time flows more slowly than for fixed. The clock on the International Space Station are slower than on Earth. And if you take a trip on a spaceship on a super-high speed, for people on Earth time will pass more quickly. You can make a circle around the galaxy and return to Earth in the future. The question is how far we can get there and if we can go back?
In fact, we do not know. And we do not know until we try, but at the moment we do not have the means to do so. However, there is an easy way to find it is possible to travel in time at all - to find the time travelers among us. You do not even need any lab! And that is what some scientists have tried to do.
2. Approach vecherinki
In 2009, Stephen Hawking gave a party for time-travelers in Cambridge, England. He always thought that the tourists from the future could be proof of the possibility of time travel, so he invited only them, but no one came.
The idea probably is not so ridiculous. Perhaps, Hawking was really expecting that someone will come. Tricky scientist did not tell anyone about the party before she passed. However, someone in the future should have known about the event after the fact, and jump into a time machine to come to the party to the known physics.
Nevertheless, there is a strong possibility that it was a proof of Hawking's point of view. As in his book "Black holes and folds of time," says Kip Thorne, a major version of time travel wormhole is that, as mentioned above, will not lead you to the events that occurred before the opening of the method of their creation. So if people from the future built a time machine, which we currently do not have, they still could not get to a party to Hawking.
3. Conventional podhod
In just a few years before the party Hawking ambitious graduate student at MIT tried a similar but even more strange approach. Rather than hide event Amal Dora convention convened whole time travel and calls on all to spread information about it:
«We need volunteers to publish detailed information about the Convention to the time travelers of future millennia could learn about it. The Convention should not be forgotten! We need publications such giants as "New York Times", "Washington Post", in the books and so on. If you have any strings, pull them ».
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Dreams come true: in «New York Times» published report, wrote an article in «Wired», even made fun of Tina Fey in the convention «Saturday Night Live».
However, the PR did not load. "The Convention was held with varying degrees of success - says Doran. - Unfortunately, we have no evidence that we were visited by time travelers, but at the same time, many of them could come incognito to avoid the endless questioning about the future ».
4. Academic podhod
Earlier this year, a pair of physicists has published a report on the study "Finding traces of travel time on the Internet." Instead of organizing different kinds of events and advertising to attract people from the future, the scientists started to hunt for evidence of their access to the Internet.
Robert Nemiroff and Teresa Willson of Michigan Technological University ransacked Twitter, Facebook, Google, Google+ and even Bing, but for the period from 2006 to 2013, the year they have not found any mention of two events from the future that has not happened yet. < br />
It was a good try. However, given the limitations of the experiment, they were looking for a very specific time traveler. Why would he come to mind to spread the word of the future of the Internet? "Time Traveler, may have tried to collect historical information, are not surviving in the future, or was looking for some future event because it believed that it had already happened or is still happening in our time", - explained in the article.
It's probably a bit silly. But no more foolish than to organize a party and nobody invited or arrange Convention on technology that has not even invented. Not surprisingly, these events have become a pretext for sitcoms.
5. What all delo
The whole point is that all these events are the result of the spread of some of the ideas in theoretical physics. Time Machine has not yet invented. If it ever happens, will begin a new era of time travel. However, we can not go to the point in time that occurred before it was invented.
However, time travel is possible. In fact, the astronauts on board the International Space Station, travel time every day, even though only a few microseconds. The principle of relativity and the nature of space-time makes it possible. So if you want to meet with a time traveler, you just have to live next to the astronaut.
via factroom.ru
