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Light can travel through vacuum, but it is not a medium.
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∙ 11y ago
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Does light require a medium?
No. Any non-vacuum medium will attenuate light.
In which medium is the speed of light a maximum?
Light travels fastest in a vacuum.
Why do light waves require a medium in which to travel?
Light waves do not require a medium through which to travel. They will travel (propagate) perfectly well in a vacuum. Otherwise, light would not pass through the vacuum of space. It would be very dark here on earth as the light from the sun, moon and stars could not reach Earth through the vacuum of space.
Can light travel in a vacuum?
Yes. Light waves are electromagnetic waves, which do not require a medium to travel through.Mechanical waves (such as sound) do require a medium to travel through, so sound waves cannot travel through a vacuum.Space is a vacuum. The light from the stars (including our own sun) travel across a great distance in a vacuum to get to us.The accepted speed of light is its speed in a vacuum, which is 299,792,458 m/s.
What is the refractive index of a medium?
The relationship is the following: the speed of light in an object is equal to the speed of light in a vacuum, divided by the material's index of refraction. Example: A certain glass has an index of refraction of about 1.5 (it depends a bit on the type of glass!). Since the speed of light in a vacuum is 300,000 km/sec., the speed of light in such glass is (300,000 km/sec) / 1.5 = 200,000 km/sec.
Does light require a medium?
No. Any non-vacuum medium will attenuate light.
Why is the speed of light medium?
The speed of light is not medium: in vacuum, it is the highest speed that there can be. Hardly a definition of medium!
Is speed of light in vacuum and medium same?
No, light in a medium will travel at a slower speed.
What is the speed of light in vacuum to the speed of light in medium yield?
That quotient is the refractive index of that medium.
The ratio of the speed of light in a medium to the speed of light in a vacuum is called its?
It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".
How does a medium (matter)affect the speed of light?
When light goes through any medium other than a vacuum, its speed is normally slower than in a vacuum.
What the value of the index of refraction of a medium?
It's the speed of light in vacuum divided by the speed of light in that medium.
In which medium is the speed of light a maximum?
Light travels fastest in a vacuum.
What type of medium does light travels fastest?
A vacuum.
How do you calculate speed of light wave with refractive index?
The speed of light in any medium isspeed of light in vacuum/refractive index of that medium.
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.
Does light travel trough a vacuum?
Yes. Light is a self-propagating wave that does not need a medium to flow. Thus, light has the ability to travel through a vacuum.
