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Light reading speed dating

For GPS satellites to work, they must adjust for similar bending of spacetime to coordinate with systems on Earth.According to the theory of relativity, time dilation is a difference in the elapsed time measured by two observers, either due to a velocity difference relative to each other, or by being differently situated relative to a gravitational field.Time dilation explains why two working clocks will report different times after different accelerations.For example, at the ISS time goes slower, lagging 0.007 seconds behind for every six months.This case is sometimes called special relativistic time dilation.The faster the relative velocity, the greater the time dilation between one another, with the rate of time reaching zero as one approaches the speed of light (299,792,458 m/s).The dilemma posed by the paradox, however, can be explained by the fact that the traveling twin must markedly accelerate in at least three phases of the trip (beginning, direction change, and end), while the other will only experience negligible acceleration, due to rotation and revolution of Earth.

Special relativity indicates that, for an observer in an inertial frame of reference, a clock that is moving relative to him will be measured to tick slower than a clock that is at rest in his frame of reference.For sufficiently high speeds, the effect is dramatic.Space travelers could then return to Earth billions of years in the future.It is not possible to make the speed of light appear greater by moving towards or away from the light source.Consider then, a simple clock consisting of two mirrors relative to the resting frame of the clock (diagram at right), the light pulse is seen as tracing out a longer, angled path.If two persons A and B observe each other from a distance, B will appear small to A, but at the same time A will appear small to B.Being familiar with the effects of perspective, there is no contradiction or paradox in this situation.As a result of the nature of spacetime, a clock that is moving relative to an observer will be measured to tick slower than a clock that is at rest in the observer's own frame of reference.A clock that is under the influence of a stronger gravitational field than an observer's will also be measured to tick slower than the observer's own clock.The reciprocity of the phenomenon also leads to the so-called twin paradox where the aging of twins, one staying on Earth and the other embarking on a space travel, is compared, and where the reciprocity suggests that both persons should have the same age when they reunite.On the contrary, at the end of the round-trip, the traveling twin will be younger than his brother on Earth.


  1. Effective speed reading software has an intuitive interface and series of exercises, tests and reading material for any age Here are the best.

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