Because the speed of light is determined by the electrical characteristics
of the medium, and the electrical characteristics of vacuum don't change.
Speed of light is max. in vaccum and slower in air.
Refractive Index= Speed of Light in Vaccum / Speed of Light in the material
Constant is the speed of light and as the speed of light cannot change it is 'constant'
No. Light slows down whenever it passes through water. Nothing is faster than the speed of light in a vaccum.
The speed of light is constant.
No, refractive index(RI) of air is more than that of vaccum. Infact RI of any medium is more than vaccum. RI of vaccum is 1. RI of any medium = c/v where c is speed of light in vaccum v is speed if light in medium whose RI with respect to vaccum is found. It is known that speed of light is maximum in vaccum so v < c, and RI > 1.
No, according to current scientific understanding, light travels at a constant speed in a vacuum, known as the speed of light, which is approximately 299,792 kilometers per second. This speed is a fundamental constant of nature and cannot be exceeded by light or any other object.
constant
The speed of light is constant because it is a fundamental property of the universe, as described by the theory of relativity. This constant speed of light plays a crucial role in maintaining the consistency of physical laws and the structure of spacetime.
yes
Yes
Light does not accelerate in the traditional sense, as it always travels at a constant speed of approximately 299,792 kilometers per second in a vacuum. This speed is a fundamental constant in physics known as the speed of light.