0
The speed of light depends on the refractive index of the medium through which it is travelling. It reaches its maximum value in vacuum. This is approx 299,792,458 metres per second.
Wiki User
∙ 9y ago
Wiki User
∙ 12y agoThe speed of light in a vacuum is approximately 3 x 108 meters per second.
The speed of light, c = 299 792 458 m s-1.
This is usually rounded to c = 3.00 x 108 m/s
c = 186 000 miles/s
Wiki User
∙ 11y agoThe speed is determined by the properties of the medium.
It will always be lower than the speed in a vacuum because that is an upper limit.
Wiki User
∙ 11y agoThe speed of light in a vacuum is equal to 300,000,000 m/s, or 300,000 km/s, or 1,080,000,000 km/hr, or 186,000 miles/s, or 671,000,000 mph.
Wiki User
∙ 11y agoThe velocity or the speed of light is 299,792,458 metres per second
Wiki User
∙ 12y ago300000 km/s in vacuum.
Add your answer:
Earn +20 pts
Which of these is constant for ALL types of electromagnetic radiation in a vacuum?
Answer = Velocity Velocity is the speed of light and, the speed of light, is a constant among Electromagnetic Radiation in the vacuum of space.
Is velocity of light constant?
Yes according to most theories the velocity of light in a vacuum is constant. (In water and glass it is slower!)
Which colours of light has the highest velocity through vacuum?
red
What is refractive indices?
Refractive index refers to the velocity of light's ratio in a vacuum to its velocity under a specified medium.
What is refractive index?
The refractive index or index of refraction of a substance is a measure of the speed of light in that substance. It is expressed as a ratio of the speed of light in vacuum relative to that in the considered medium.A simple, mathematical description of refractive index is as follows:n = velocity of light in a vacuum / velocity of light in mediumHence, the refractive index of water is 1.33, meaning that light travels 1.33 times as fast in a vacuum as it does in water.
Velocity of light greatest?
in a vacuum
In which materials is the velocity of light greatest?
A vacuum, so no material
Which of these is constant for ALL types of electromagnetic radiation in a vacuum?
Answer = Velocity Velocity is the speed of light and, the speed of light, is a constant among Electromagnetic Radiation in the vacuum of space.
Is velocity of light constant?
Yes according to most theories the velocity of light in a vacuum is constant. (In water and glass it is slower!)
Which colours of light has the highest velocity through vacuum?
red
Speed of light is minimum in?
the velocity of light is maximum in vacuum I.e 3*10^8 m/s. as the density of the medium increases the velocity of light decreases in the medium. so the velocity of light is less in watt than in atmosphere. the thicker the medium is the slower the electromagnetic wave, so the velocity of light will be minimum in the thickest medium.
What is refractive indices?
Refractive index refers to the velocity of light's ratio in a vacuum to its velocity under a specified medium.
What happens when light passes through something?
The velocity of light is greatest when travelling through a vacuum. When travelling through something else, a glass material say, then its velocity is slower. The refractive index is the ratio of the speed of light in a vacuum to the speed of light in that substance. For example light travels in a vacuum about 1.3 times as fast as in water, so we say water has a refractive index of 1.3. And it is likely that the velocity in the glass will be different at different wavelengths of light.
What is refractive index?
The refractive index or index of refraction of a substance is a measure of the speed of light in that substance. It is expressed as a ratio of the speed of light in vacuum relative to that in the considered medium.A simple, mathematical description of refractive index is as follows:n = velocity of light in a vacuum / velocity of light in mediumHence, the refractive index of water is 1.33, meaning that light travels 1.33 times as fast in a vacuum as it does in water.
Why there is no sound year like light year?
The velocity of light in vacuum is a universal constant. A light year is the distance travelled at that velocity in one year. To define a sound year it would be necessary to also specify the precise characteristics of material it is being propagated through. A vacuum won't do, since sound doesn't travel through a vacuum.
In vacuum the velocity of light depends on?
The electrical characteristics of free space, and the direction the source is pointing.
Does Light Travel More slowly in a Medium?
Light travels at its maximum velocity c in a vacuum. In a medium with a certain refractive index, it is slowed down and travels with velocity c/index
