Bulldog_10 said:
For all you time-travel believers out there, let me ask you this:
Let's say I decided to change the definition of time. To me, one second takes twice as long to pass. So one of your seconds is two seconds to me.
So if me and you both see a car moving from point A to point B, does that mean that the car you see is travelling twice as fast as the car I see?
For example, if a car travels 1 mile in 1 minutes of your time, that means it takes 2 minutes in my time. So you see the car travelling at 60 miles per hour, but I see the car travelling at 30 miles per hour. Does that mean that your car is ACTUALLY travelling faster than mine?
Or is it just faster because your DEFINITION of time is different than mine?
And does this fact mean that I would have to adjust all of these time travel formulas? So *I* would have to travel at twice the speed of light to travel through time, but YOU would only have to travel at the speed of light? ***Or is it all relative to your definition of time?***
I don't know if this proves anything, but I thought I'd throw it out there.
It is called the theory of Relativity.
Yes, relative to YOU the car moves at x.
Relatiove to me, the car moves at Y speed.
For example. Get on a train that goes 50 mph. Throw a ball at 20 mph in the direction where the train is going.
How fast does the rock fly relative to you?
Answer at 20 MPH.
How fast does the rock fly if you are observing from the non moving ground? 50 (speed of the train) to 20 (speed of the rock).
Now, here is why time travel is possible.
What if you are sitting on a spaceship traveling at the speed of light. If you flash a flashlight where spaceship is going, HOW FAST WILL THE BEAM GO?
It will travel at the speed of light. What about the guy on the earth observing? The speed will not be 2x of speed of light. It will still be 186,000 miles per second.
By now you probably understand the conflict: How is it possible that light always travels at the same speed, no matter how fast its source is moving? Einstein, when he was 16, thought about the same thing.
Are you familiar with the equation v=d/t? All it says is velocity (speed) equals distance travelled divided by time.
For example: Speed of 20 mph can be derived as
v = Distance 20 miles / Time 1 hour or v= Distance 40 miles/ Time 2 hours.
As you see, the speed can be the same but Distance and Or Time changes! And thus travel through time and space!