Time Machine?
 

Do you belive it is possible to make a Time Machine? If so you think you could build one in year and I could test it? Cause I am sick of all this modern day crap so yeah help me if you can.

it's not physically possible to go back in time

well. if u think about it..... going back in time is a paradox..... becuz how can u go back in time b4 u were born but exist when u really havent.. or how can u go back in time..... but the time machine hasnt been built yet..... the future is simple... u cannot go into the future simply becuz it hasnt existed.

anything is possible

ok so it is possible for me to have a T Rex as a pet?

If someone invents a time machine and you go back and get one...yes.

Don't think that just because something is hard to believe or sounds far fethed it isn't possible or true. Only up until a little while ago everyone thought everything revolved around the earth. We know that is not the truth now, but if you had said that back then, everyone would ahve thought you were crazy.

lol, well how can you go back in time....I'd like to hear an expert explain how all the protons and electrons from the past are re-excited and somehow the earth reverses revolutions and rotations, causing everything to go in reverse...and how can a machine alter this?

exactly.. it is not physically nor technically possible to go back or forward in time


now whats the deal with the title "Back to the future"

how can you go BACK to the FUTURE?

[quote:eab59]ok so it is possible for me to have a T Rex as a pet? [/quote:eab59]

Yeah, or you could buy a toy T-Rex.

Or Jurassic Park could come true. biggrin:

I don't know. I'm not a scientist, but think of how far technology has advanced in 100 years. What will it be like in another 100? The industrial revolution has just begun. Merely even 200 years.

just because something can't be explained now, doesn't mean it can't or won't happen.

Take God for example. billiions of people believe in a God or another, but has anyone ever seen one? Can you prove it does or doesn't exist? no one can. We can't say God doesn't exist, but we can't say he does either.

Scientifically of course.

A time machine is possible, in theory.

- You will technically go back in time, but everything around you would be the same as usual.

- Time might not be able to go negative, you could slow time relitive to yourself, but once again nothing would happen.

- Time might not even exist, it could be something humans made up. I know you can record time, but if you think deep enough...how do we know it exists?

Do't be so closed minded.

And back to the future refers to someone going back to where they ahve been before. Just like back to school. You were at school last year and now your going back. You went to the future whenever, and now your going back. Anyway, its just a movie that made millions of dollars. How can you criticize them?

Yah, some prominent scientest guy said something like, humans today, have only discovered 3% of existence.

how do they even know that?

time is something we invented, it is actually the idea that all molecules use energy constantly and it is never destroyed, that is why everything continues to move in a forward pattern

[quote:52ead]Instead of contracting the space around it, as ordinary matter does, antigravity—or negative energy, as it is sometimes called—pushes it apart. In theory, antigravity would be placed inside a wormhole's throat, opening it wide enough for an astronaut, or possibly even a spaceship, to pass through. Antigravity does the trick; the problem is finding it. Einstein first postulated the existence of antigravity on cosmic scales in 1915, a conjecture proven correct eight decades later. But Einstein's antigravity is wispy and dilute, a spoonful of sugar dissolved in the Pacific Ocean. Opening a wormhole requires a regular torrent of antigravity.
[/quote:52ead]

http://www.popsci.com/popsci/science/ar ... -2,00.html

Try this article too:

http://abcnews.go.com/sections/scitech/ ... 20306.html

Time is made by humans.. it is something artificial created by man,...but if nothing wood change, what is the point in going back...... I tihnk everyone would only go back to the past to change what they have done or what has happened..... but then that would screw up the future... or actually it would be the present. think about it...... ITS A PARADOX GUYS.. there is no real answer.

if i could go ...
Future= Go steal the best Graphis card and Computer ever made then bring it back here

Past=Change the bad choices ive made in life and watch World War 2 fire1:

Were not taking the point, were talking if it is possible. We don't really care about the implications of it. This is all theoretical.

And it's spelt "would" not "wood".

hm...probably the most difficult question.....if you could go back in time.....when?

exceent article:

http://www.howstuffworks.com/time-travel.htm

howstuffworks.com is a great place for all technical answers like this one.

[quote:d40be]According to Einstein's theory of special relativity, time slows as an object approaches the speed of light. This leads many scientists to believe that traveling faster than the speed of light could open up the possibility of time travel to the past as well as to the future. [/quote:d40be]

[quote:0b70d]And it's spelt "would" not "wood".[/quote:0b70d]

no shit

Even if building a time machine were possible it would be most inadvisable to do so.

You never know how your presence could affect what you consider the present, you might even cease to exist.

Think about it, you land in 1917 and squash Adolf Hitler when he was still a corporal, what happens to history after that? No more MOHAA, so we wouldn't be talking about this now, that's for sure.

anyone know the name of the theory that has an example like this...: "if a butterfly in china sneezes, it causes a thunderstorm in Australia"

I just learned this too....

[quote:e3250]According to Einstein's theory of special relativity, time slows as an object approaches the speed of light. This leads many scientists to believe that traveling faster than the speed of light could open up the possibility of time travel to the past as well as to the future. The problem is that the speed of light is believed to be the highest speed at which something can travel, so it is unlikely that we will be able to travel into the past. As an object nears the speed of light, its relativistic mass increases until, at the speed of light, it becomes infinite. Accelerating an infinite mass any faster than that is impossible, or at least it seems to be right now. [/quote:e3250]


Hm, sounds to me that as speed>c, t approaches zero but can never reach zero?

[quote:cd69e]hm...probably the most difficult question.....if you could go back in time.....when? [/quote:cd69e]

1939, Witness the war first-hand.

time travel is impossible guys. if it was then wouldnt u see a bunch of time travelers walking around?

where would you witness it? if you are talking on the battlefield, chances are you would be killed, it's not like you can hover in the air and watch it...the properties of physics would theoretically be equal as they are today

and if you approach c, you cannot slow down? damn...this is very interesting. so far the only logical way to travel at c is by solar currents, at least that is what I know

1939, Witness the war first-hand.[/quote:bcc4a]ugh but how could you go back that far. you werent even born yet ... thus, you dont exist

Alf, and um aliens!!!

[quote="Old Reliable":f62e6][quote:f62e6]According to Einstein's theory of special relativity, time slows as an object approaches the speed of light. This leads many scientists to believe that traveling faster than the speed of light could open up the possibility of time travel to the past as well as to the future. The problem is that the speed of light is believed to be the highest speed at which something can travel, so it is unlikely that we will be able to travel into the past. As an object nears the speed of light, its relativistic mass increases until, at the speed of light, it becomes infinite. Accelerating an infinite mass any faster than that is impossible, or at least it seems to be right now. [/quote:f62e6]


Hm, sounds to me that as speed>c, t approaches zero but can never reach zero?[/quote:f62e6]

Right.

However, moving foward in time is different.

Read the howstuffworks article. It is very good.

[quote:ed49a]Einstein once said "The relativistic analogy can be carried to its logical end. Since time begins to slow down with higher speeds,it can be shown that at the speed of light it stops totally and beyond that begins to run backwards! Similarly, matter having contracted more and more, ultimately vanishes. But Beyond the spped of light it is difficult to imagine negative matter with infinite mass.

Einstein was probably right when he said that the speed of light was the upper limiting velocity in the universe."
[/quote:ed49a]

There is a speed limit in physics, and it appears to be C...or at least we know of...

explain

oh man here is a question "what is the size of the universe?"

I always think... "when I die, will I ever, ever live again?"...if you think about it, you will never ever ever live again

I'm gonna go get einsteins special theory of relativity from the library. This stuff is interesting.

whoever figures out a way to travel at C will be heralded as the greatest person that ever lived, in my opinion

[quote="Old Reliable":2ac7f]oh man here is a question "what is the size of the universe?"

I always think... "when I die, will I ever, ever live again?"...if you think about it, you will never ever ever live again[/quote:2ac7f]

It all boils down to Einstein. biggrin:

The universe is collapsing om itself oOo:

when I was a kid I thought that was the scariest thing, knowing you will never live again, as long as time continues...