Time Dilation Caused By Acceleration Or Gravitation:

The spatial curvature caused by extreme acceleration or gravitation generates an efficient slowing down of time. Recall the primary axiom of exceptional relativity: The speed of light is stable, no matter what the point of vision. The laser beam traveling crossways the space ship, as shown in few of the examples, forever moves at the similar speed. This is one thing about which all viewers in all reference frames should agree.

The path of the light ray since it travels from the laser to the screen is longer in the case as shown by the figure below. This is partially since the ray takes a diagonal path instead of traveling straight across. Additionally, though, the path is curved. This raises the time interval still more. From the vantage point of a passenger in the space ship, the curved path shown in figure below symbolizes the shortest possible path the light ray can take across the vessel among the point at which it leaves the laser and the point at which it hits the screen.

Figure: As view from inside the ship, the laser beam travels in curved path across the vessel whenever it is accelerating at a high rate.

The laser device itself can be turned faintly, indicating a little bit to the front of the ship; this will cause the beam to enter at the middle of the screen (as shown in figure below) rather than off-center. Though, the path of the beam is still curved and is still longer than its path whenever the ship is not accelerating. The laser symbolizes the most precise possible time-piece since it is based on the speed of light that is an absolute constant. Therefore time dilation is generated by acceleration not only as seen by viewers looking at the ship from the exterior though also for passengers inside the vessel itself. In this respect, gravitation and acceleration are even more influential "time dilators" than the relative motion.

Figure: Even when the laser is turned and hence the light ray hits the middle of the screen, the path of the ray is curved whenever the ship accelerates at a high rate.

Suspending our doubt again, and supposing that we could experience like intense acceleration force with no being physically crushed, we will really recognize time as slowing down within the vessel under circumstances like those which generate spatial curvature . The clocks will actually seem to run more gradually, even from reference frames within the ship. Additionally, everything within the ship will emerge bent out of shape.