I know this is a stupid question...but could it be possible to built up a time machine???

Question

I mean, movies like Back to the Future are really fascinating. But since I was a chid, I have always wondered if one could ever be made. I really doubt it. Please, only bright answers. Don't bother to answer if you gonna fool around.

Answer 1

I don't think this is a stupid question at all. Think of all we have accomplished in the past one hundred years. People laughed at the Wright brothers thinking the idea of a flying machine was impossible, now we are exploring other planets. So no, I would not count out the possibility of time travel.

Answer 2

I don't think that this is really a science question, but more of a philosophical one. If a time machine could be built, wouldn't the person who built it already have been here to show it off. If it were built in the future, the builder would have come back in time. If it were built now, the builder would have made it available on e-bay. (SORRY-COMPUTER JOKE)

Scientifically- it should be possible to travel in time. We are traveling in time now. the idea would be to speed up or reverse the time stream we are already in. FTL travel should do it. The technology is probably not to far away.
If it were made available to the general public, think of the outcome. No more casinos, Lottery, history tests, etc. No more wondering what you will be when you grow up.

Think About It. Would You really Want this type of world. No unexpected events, no mystery, no excitment. It would be like reading the ending of a Mystery Novel FIRST to see "who-dun-it"

POSSIBLE- YES
PROBABLE-MAYBE

BUT SHOULD WE?????

Answer 3

There don't seem to be any particular heavily studied theories for going back in time without the idea of multiple "Earths" existing.

Going forward in time is another matter if you follow the theory of relativity. Here is an excerpt from Link 1:

Einstein’s theorem was known as the “clock paradox” until 1911, when Paul Langevin and others re-expressed it in terms of twins. One twin, Alice, stays at home on Earth, while the other, Bob, takes a journey to a nearby star at a significant fraction of the speed of light, for example (5/13) c, turns around and returns to Earth. According to the traveling twin Bob’s clock, the round trip has taken, say, 12 years, while the stay-at-home twin Alice’s clock registers 13 years. Bob has thus become 1 year younger than his stay-at-home twin sister Alice.

But as said, it's just a theory.

It's a little easier to explain the concept in diagram/picture form (as I first learned it from a textbook), but there's a limit to what one can do on YAnswers.

In regards to making a time machine, in the second scenario, traveling forward in time just required a space ship. In the first scenario, a time machine is currently outside our scope of knowledge and technology.

Answer 4

Read Steven Hawking's "A Brief History of Time". I would also recommend "The Five Ages of the Universe" by Fred Adams and Greg Laughlin. The arrow of time is related to entropy and the expansion of the universe. Changing this is beyond what humans will ever be able to do. On a local level, one can travel forward in time at a slower rate relative to a "stationary" observer by travelling at relativistic speeds, but the direction is still forward in time. Perhaps this is good because there would be serious problems with causality if time travel were permitted by the laws of nature.

Answer 5

I've always thought about how going West makes it earlier, and going far enough makes it yesterday, but normally this doesn't actually put us farther back because it takes longer to travel the distance than the time we'd gain. But what if someone could make it around the world in under 24 hours. If each time-zone took under an hour to get through, your time (the time zone started in) would only be, say, 30 minutes later but the clock says its 1 hour before that time. If you keep going, gaining 30 minutes each time you'd soon make it back to your time zone with all those extra minutes adding up. Although it still took time to you, the clock would be earlier than when you left.

No idea if what I said has any credibility, just a crazy idea I had

Answer 6

Interesting question..Some theories said yes you can go back to your old time if you can reach your velocity more than light velocity. I am not sure which source that I get this info. Besides, I just remembered that I have ever read one English magazine said our old time is located below our current time, so we must find a way to get down there. That magazine also draw one diagram show the location of our old time.This theoris is quite ridiculous, and I am not sure. But it is not stupid asking this... because talking about time machine I think we have to discuss about time and space theory first. And time and space theories was already discussed by Einstein, great Jew scientist, and still being discuss nowadays...hope we can have their answer one day

Answer 7

Future maybe, past not so much. I have a hard time fathoming the possibility to go anywhere in time before the time machine was actually built. Im no scientist, but I don't understand how you could do it.

Answer 8

What is physical time? It is this that a person has to understand if they wish to move through it, or to change their relationship to it. Physical time is a velocity. It is that of the value "c". This value exists within mass, and is the basis of it because mass is composed of time. This is seen in the equations E = mc2 and m = E/c2, Notice that the basis of each of these is that of c2. If this value were to change in either of these, then the mass and energy would also change.

In order to change your relationship to either the past or future, you would have to change what you are physically. Any machine a person would need to bring about this change would also have to have a potential existence outside our reality.

http://360.yahoo.com/noddarc "Magnetism - Gravity" speaks to this problem.

Answer 9

The Earth travels a million miles along its orbit in one day. So, if you jumped in time just one day either way, you would end up in space 1 million miles from Earth.

(This of course ignores all the other motions involved - sun in motion through space, galaxy rotating, galaxy motion, etc)

So, unless you had some means of also correcting for the spacial movement, you are out of luck.

Answer 10

I tend to doubt it because questions of causality get kinda strange when time is anything but linear (at least, at the macroscopic level)


Doug