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Concepts introduced by the theories of relativity include:
Measurements of various quantities are relative to the velocities of observers. In particular, space contracts and time dilates.
Spacetime: space and time should be considered together and in relation to each other.
The speed of light is nonetheless invariant, the same for all observers
originally posted by: swanne
a reply to: Aazadan
You don't want me near a time machine.
I would go back in time ask the creator of the time machine how to make more. Thus I would have virtually infinite of shots at travel back to the past. I would start asking questions to all the great men of history - Washington, Einstein, Buddha, etc. Then, I would probably go on a vendetta against all those historical figures which made Earth a dark place...
Kind of a cross between Dr Who and the Master...
originally posted by: swanne
I would go back in time ask the creator of the time machine how to make more. Thus I would have virtually infinite of shots at travel back to the past. I would start asking questions to all the great men of history - to Washington I would ask if the 2nd amendment applies to futurist machine guns, to Einstein I would ask about his Unified Field Theory, to Buddha I would ask if he approves if the current buddism direction, etc. Then, I would probably go on a vendetta against all those historical figures which made Earth a dark place...
originally posted by: swanne
a reply to: NoFearsEqualsFreeMan
Actually, everything starts making sense when one does hit the bed... I hear a classical composer created an entire song from a dream.
I'm not a physicist but my understanding is that you could take a ship moving at the speed of light, and send a beam of light emanating out from it. From the viewpoint of those on the ship the beam would leave the ship at the speed of light. For those outside the ship however it would appear that the ship and the beam were moving at the same speed.
As far as movement goes there's a paradox you may or may not be aware of.
In the arrow paradox (also known as the fletcher's paradox), Zeno states that for motion to occur, an object must change the position which it occupies. He gives an example of an arrow in flight. He states that in any one (durationless) instant of time, the arrow is neither moving to where it is, nor to where it is not. It cannot move to where it is not, because no time elapses for it to move there; it cannot move to where it is, because it is already there. In other words, at every instant of time there is no motion occurring. If everything is motionless at every instant, and time is entirely composed of instants, then motion is impossible.
I have had many of my best ideas after giving up on a problem for the night and going to bed.
originally posted by: Saylesie17
Who else but CHRIST himself