25-08-2017, 09:32 PM
TIME DILATION.
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WHAT IS TIME DILATION
Slowing of time in accordance with the theory of relativity that occurs in a system in motion relative to an outside observer and that becomes apparent especially as the speed of the system approaches that of light is called time dilation.
In General Relativity, time dilation is caused by gravity even when observers are at rest.
Einstein had predicted this effect in his theory of relativity.
RELATIVE VELOCITY TIME DILATION.
This is due to the relative velocity of motion between two observers. This case is sometimes called special relativistic time dilation.
When two observers are in relative uniform motion and uninfluenced by any gravitational mass, the point of view of each will be that the other's clock is ticking at a slower rate than the local clock. The faster the relative velocity, the greater will be the magnitude of time dilation... The point of view of both observers will be that again the local clock is correct and it is the distant moving one that is slow.
GRAVITATIONAL TIME DILATION.
This is due to difference in their distance from a gravitational mass.
when both observers are differently situated in their distance from a significant gravitational mass such as the Earth or the Sun . The general theory of relativity describes how, for both observers, the clock that is closer to the gravitational mass, i.e. deeper in its "gravity well", appears to go slower than the clock that is more distant from the mass . That does not mean that the two observers fully agree . Each still makes the local clock to be correct.
the observer more distant from the mass (higher in altitude) measures the other clock (closer to the mass) to be slower than the local correct rate, and the observer situated closer to the mass (lower in altitude) measures the other clock (farther from the mass) to be faster than the local correct rate.
TIME DILATION AND SPACE FLIGHT.
Time dilation would make it possible for passengers in a fast moving vehicle to travel into the future , while ageing very little , due to their great speed which slows down the rate of passage of on-board time.
one year of travel would correspond to 10 years at home.
The ORION project is the major idea towards this idea.