
LEP 2.1.01 Measuring the velocity of light
... The mirror displacement Dx is measured; the measurement should be repeated several times. 2. The water-filled tube or the synthetic resin block is placed in the path of the ray so that its end faces are perpendicular to the optic axis; the mirror is placed directly behind them (top of Fig. 3). A sup ...
... The mirror displacement Dx is measured; the measurement should be repeated several times. 2. The water-filled tube or the synthetic resin block is placed in the path of the ray so that its end faces are perpendicular to the optic axis; the mirror is placed directly behind them (top of Fig. 3). A sup ...
A New Astronomical Quranic Method for The Determination Of The
... "The results of the special relativity hold only so long as we are able to disregard the influence of gravitational fields on the phenomena". This validity condition of the second postulate of special relativity is considered in the present work because the constancy of the velocity C needs absolute ...
... "The results of the special relativity hold only so long as we are able to disregard the influence of gravitational fields on the phenomena". This validity condition of the second postulate of special relativity is considered in the present work because the constancy of the velocity C needs absolute ...
Time dilation

In the theory of relativity, time dilation is a difference of elapsed time between two events as measured by observers either moving relative to each other or differently situated from a gravitational mass or masses.An accurate clock at rest with respect to one observer may be measured to tick at a different rate when compared to a second observer's own equally accurate clocks. This effect arises neither from technical aspects of the clocks nor from the fact that signals need time to propagate, but from the nature of spacetime itself.