[charlie]

yes, but travelling back in time is a differnt matter..

[apoptosiscontroller]

I have a time machine in my garage.

[ozzie_the_owl]

yes, i have read up on that as well.  Its enstiegn theory relativity.  the faster you go the more time slows, if you were going the speed of light it might take you years to bend down and tie your shoe but it would seems like a few moments to you.  Time travel into the future is possible, its uneconomical but not immpossible.

then again you have to concider that it is uneconomical as of 2005, though i seriously

dought(sp?) this guy is actually from the future, at the exponental rate of scientific

discovery in the past 1000 years, im guessing its possible in the next 4000-5000

some new form of energy will come out that will allow man to further explore the

boundries of science

[Lord of Nukes]

Perhaps, but I can imagine that travelling at near the speed of light would require huge amounts of energy, amounts we can scacrely imagine. Attemtping to break the limit, you'd have to do something really fancy with physics, reverse the effects of intertia of break something down into some state less definable than matter and energy; something would require vast amounts of energy if possible at all.

[apoptosiscontroller]

he said he created a mini-black hole in a fireball, too. That's nifty. I think it's totally possible to time travel, but why haven't we seen any yet? I mean, it could go in the past if it could go in the future...

[ozzie_the_owl]

past time travel isint a good idea in my book, whats done is done, and what could

happen should these things not have happened . . .

its bad stuff messin with whats been done

[Commisar Marley]

It sounds creepy, but impossible.
That guy is just a SUPER attention whore

[Duff man]

Well is you travle back in time then your gonna end up messing up the timline completly and may end up with you never being born. I highly dought that time travel is even possible.

And if you create even a mini black hole you would get destroyed when you enterd into it. But as you are moving into it you will find time will slow and eventualy freez then you will get obliterated when you go further in.

Also traverling at the speed of light is imposible.

[Marshy]

the guy who claims he travled to 2036 was drunk, I bet.

This post has been edited by Marshy: 21 July 2005 - 03:05 AM

[poopinabox]

That's creepy. He said there will be a US civil war this year. If that happens... it might be real. But I'm not beleiving it until I see civil war.

[BrandonF]

I think hes crazy....

[Sephiroth]

I belieave this guy I mean Someone said that he created a mini black hole Well even if you did go through a black hole then you would be turned into a piece of spaghetti(Spell) (Doubt there you go oozie).

But what I said in Time travel topic was not to travel the speed of light but to slow it down there are a lot of materials that slow light down such as ice water.

[RionOfFire]

<grammar whore> Sephiroth, learn to use this little piece of punctuation: "." It is called a period, and it comes at the end of each sentence to signify its completion. </grammar whore>

As for time, it flows in one direction and one direction only. Forward. To travel back in time is the temporal equivalent of swimming upstream in rapids... during a storm of the century... times a thousand. What is very possible, however, is the concept of travelling into the future. As any sort of matter approaches the speed of light, it experiences a unique effect known as time dilation.

As for light, it is said in the physics world that the speed of light is CONSTANT (c = 299 792 458 m/s). However, once we start getting involved with relativity, the whole situation just gets so much more complicated. Everything becomes relative to a specific frame of reference. When one approaches (but does not reach) the speed of light, he/she experiences the world in normal time. However, while one second may pass to the person who is moving, one standing on a street corner may experience 5 seconds. This person would appear to be moving at five times the normal rate for humans to walk, breathe, etc. Invariably, this is considered travelling into the future.

As for travelling at light speed... it is not possible. When one hits exactly the speed of light, a phenomenon occurs wherein they experience the entire lifespan of the universe in an instant, before ceasing to exist. Here is why. The equation E=mc^2 is a simplified version of the true equation. It is actually E=(mc^2)/(1-(V^2/C^2)). What this means is that as "V" increases to a significant fraction of c, the bottom part of the fraction approaches zero, which invariably makes a VERY VERY LARGE number. This means the energy required to travel at the speed of light is infinite. Also, were you to travel at the speed of light, the equation would look like this: E=mc^2/0. For any math geek out there, you will know that we cannot divide by zero. That equation is undefined.

Curious enough, though, according to the equation we CAN travel faster than the speed of light. To do so, however, we would need to use up a negative amount of energy. It is possible to do so, according to the equation, but one cannot accelerate through the speed of light in order to achieve those speeds.

So to sum up a rather long-winded spout on Relativity (Gr. 12 Physics): No, one cannot travel backwards in time without exceeding the speed of light and never actually reach the speed of light. At that point (according to the equation for time dilation), time DOES start to move backwards... I think... Gah, so long since taking that class...