Speed of Light
The speed of light is always the fastest in a vacuum, followed by air. No intermediary is needed for the light to go from one place to another. The fact that a vacuum is a completely obstruction-free medium for the movement of light results in a vacuum moving faster than air, which raises the refractive index of air. The symbol for it is c. Following the speed of light is this order:-
Vacuum> Air> Water> Glass
As the Vacuum is the clearer medium for the light to travel without any hindrances, the speed of light is the most in Vacuum.
- The velocity of light in a rarer medium is greater than its velocity in any denser medium.
- No object can move faster than the speed of light, claims the special theory of relativity.
- The distance is also calculated using the speed of light.
- When we say a star is one light-year distant, we mean it will take one year for light to travel there.
Related Questions:
Comments
write a comment