The speed of light was then estimated to account for the seven minute overall variation of the observed interval between successive eclipses. T f displaystyle t_ f final time. Speed of light calculator for the distance per time or time per distance.
The modern methods of measuring speed of light use coherent laser beams and radar signals and give results with high degree of accuracy.
T f displaystyle t_ f final time. Light moves at the speed of 299 792 458 meters per second what approximately gives 300 000 kilometers per hour or 186 000 miles per second. How to Calculate the Speed of Light Light Experiments. The most probable value for the speed of light in free space is c 299792458 x 10 8 ms -1.