Question

IS THE SPEED OF LIGHT IN VACUUM EQUAL TO THE SPEED OF LIGHT IN AIR?

Answer 1

Hi,

For practical purpose and for calculations we take speed of light in vacuum and air to be same. The actual measurement shows that there is a difference in the speed of light. Here are the values given below

Speed of light in vacuum: 299,792,458 m/s

Speed of light in air: 298,925,574 m/s