Time travel, impossible?

[ABQCOWBOY]

In a rather surprising "swerve" Kim Kardashian is the head of a military coup and seizes the presidency of your country abolishing the sport of football meaning their is no superbowl.

That's it Dash, your voted off the Island. Pack your stuff and get!

 

[YosemiteSam]

You cannot time travel anymore than you do today. (traveling along the belt of time) You can only compress or stretch the effect of time.

For instance, you can never go back in time. Once time has occurred, it's in the past. The faster you are moving the more you compress the effects of time on mass. The slower you move, you are stretching out the effects of time on mass.

Think of it like this. Say you are traveling 100 miles and that distance is "time". If you were going 60 miles you would come upon a mile marker every 60 seconds. If you sped up to 120mph, you would come across a mile marker every 30 seconds. You would have only aged 30 seconds, yet still traversed the same distance of time. You are still experiencing the entire "distance" of time, but it is happening faster.

If you slowed to 30mph, you would still travel the same time (distance), but would age at twice the rate before you reached each mile marker. In that extra 60 seconds of time, your body ages an extra 60 seconds due to the fact that you're only moving half the rate.

Now, that is only a analogy. The spectrum of speed to time dilation is actually much much greater. (ie, you would have to go much faster to see the effects).

You would have to travel at 446,400mph for 100 years straight to experience gain of about 702 seconds (11.7 minutes) in time dilation. Meaning to be 11.7 minutes younger than a guy born at the exact same moment as you on just living life on Earth for the same 100 years.

 

[Afigueroa22]

You would have to travel at 446,400mph for 100 years straight to experience gain of about 702 seconds (11.7 minutes) in time dilation. Meaning to be 11.7 minutes younger than a guy born at the exact same moment as you on just living life on Earth for the same 100 years.

Yes Einstein explained if you traveled at the speed of light around the earth for a couple months when you landed it would be thousands of years in the future for everyone on earth but to you it would only have been those few months.

 

[Tabascocat]

From a class I took in college:

Time travel in theory is possible, but impossible at the same time. An example the Prof used (I will never forget) is dinosaurs. He said that if we were to get into a spaceship and be able to travel faster than the speed of light, at some point in the universe, if we had the technology to be able to look on the earth's surfaces, we would see the dinosaurs walking on our planet. Essentially, we traveled time. The problem is we are still far, far away, we can see the past, yet can not be there at the same time.

 

[YosemiteSam]

From a class I took in college:

Time travel in theory is possible, but impossible at the same time. An example the Prof used (I will never forget) is dinosaurs. He said that if we were to get into a spaceship and be able to travel faster than the speed of light, at some point in the universe, if we had the technology to be able to look on the earth's surfaces, we would see the dinosaurs walking on our planet. Essentially, we traveled time. The problem is we are still far, far away, we can see the past, yet can not be there at the same time.

The only thing that makes this true (actually not true too) is the fact that you would catch up to and pass the light that bounced off the dinosaurs 65 million years ago and turn around and allow that 65 million year old light to enter your eyes. (allowing you to see a dinosaur)

Of course, due to 65 million years of light spread, the best you would probably get is a single photon enter your pupil and therefore would never actually see a dinosaur.

That instances has nothing to do with time travel / time dilation. In that sense, you can never go / view back in time. The best you could do is view the past that occurred after left for light speed.

 

[Tabascocat]

The only thing that makes this true (actually not true too) is the fact that you would catch up to and pass the light that bounced off the dinosaurs 65 million years ago and turn around and allow that 65 million year old light to enter your eyes. (allowing you to see a dinosaur)

Of course, due to 65 million years of light spread, the best you would probably get is a single photon enter your pupil and therefore would never actually see a dinosaur.

That instances has nothing to do with time travel / time dilation. In that sense, you can never go / view back in time. The best you could do is view the past that occurred after left for light speed.

Agree, this was just a very vague example. Too many other things involved for this to actually work. In a sense, it might not be actual time travel, just an example of seeing the past in a way. If ya look at the dinosaur thing w/o dissecting it, it is pretty cool though.

 

[YosemiteSam]

Agree, this was just a very vague example. Too many other things involved for this to actually work. In a sense, it might not be actual time travel, just an example of seeing the past in a way. If ya look at the dinosaur thing w/o dissecting it, it is pretty cool though.

Definitely. I wouldn't mind seeing a T-Rex. Especially from the past so I don't have to get that close to the real thing. :laugh2:

 

[Afigueroa22]

Definitely. I wouldn't mind seeing a T-Rex. Especially from the past so I don't have to get that close to the real thing. :laugh2:

Actually I would love to visit a real life Jurassic Park.

 

[burmafrd]

I would like all lawyers to visit Jurassic Park




The best arguement that Time Travel is not possible is that terrible things have happened in this world.

If it was possible someone would have come back and say for instance killed Hitler in the 20's; stalin too.

Or the fact that there is not one tyrant ruling the world.


Otherwise we know nowhere near enough about anything to say otherwise.

Like those saying that the Speed of Light is not attainable. Or the limit.

There is noway we know enough to say that.

 

[Afigueroa22]

The best arguement that Time Travel is not possible is that terrible things have happened in this world.

If it was possible someone would have come back and say for instance killed Hitler in the 20's; stalin too.
.

What if Hitler or Stalin are from the future?

 

[burmafrd]

What if Hitler or Stalin are from the future?

then they would have been much more successful.

 

[CashMan]

Out of pure curiosity, are you trying to say(Sam I Am), that you can see the past, but you are not able to change it?

 

[Afigueroa22]

Out of pure curiosity, are you trying to say(Sam I Am), that you can see the past, but you are not able to change it?

I'm not sure what Sam ment but Einstein did say time viewing is possible, to the past that is.

 

[CashMan]

I'm not sure what Sam ment but Einstein did say time viewing is possible, to the past that is.

I am wondering, if that meant only observing not interacting. I believe scientists who use the space telescope can see into the past as well. The light from distant planets takes well, time to travel. So, they can not see what is happening right now, but many years in the past.