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The speed of light through vacuum is constant.
The speed of light through air is slightly less.
The speed of light through water or some other medium is even less than that.
The factor by which the speed of light (and its wavelength) is reduced within a medium is called the "index of refraction" (which determines the amount of bending that occurs when light goes from one medium to another).
What else can I help you with?
Is the speed of sound as speed of light?
The speed of light is much greater than the speed of sound.
What happens to the speed of light when it travels from air into water?
the speed of light never changes but when the light beam goes from air to water, it refracts. this is when the light beam alters direction because it hits an object of greater or less density (in this case it is higher).
Is the speed of light in water should be more than the speed of light in a vacuum?
No. Light slows down whenever it passes through water. Nothing is faster than the speed of light in a vaccum.
Why are electrons travel at greater than speed of light in television?
They don't. Nothing can exceed the speed of light. Electrons in a television travel much slower than the speed of light.
Is it possible to travel at the speed of light in water?
No, it is not possible to travel at the speed of light in water. Light travels at a slower speed in water compared to its speed in a vacuum, which is about 299,792 kilometers per second. The speed of light in water is approximately 225,000 kilometers per second.
Is the speed of light greater or lesser in air than in water?
The speed is the same. Light travels at a finite speed.
Is the speed of sound as speed of light?
The speed of light is much greater than the speed of sound.
Why the speed of electron beam is greater than the light speed in cathode ray oscilloscope?
Why is the speed of the electron beam greater than the speed of light in cathode ray oscilloscope.
Is the speed in water vapor greater than speed in water?
Not the speed of sound.
Is the speed of sound in steel greater than speed in water?
Yes.
What happens to the speed of light when it travels from air into water?
the speed of light never changes but when the light beam goes from air to water, it refracts. this is when the light beam alters direction because it hits an object of greater or less density (in this case it is higher).
What travels at a greater speed ultraviolet light or infrared?
Ultraviolet light travels at a greater speed than infrared light. This is because the speed of light is constant in a vacuum, and different wavelengths of light, such as ultraviolet and infrared, have varying frequencies and energies.
Is the speed of light in water should be more than the speed of light in a vacuum?
No. Light slows down whenever it passes through water. Nothing is faster than the speed of light in a vaccum.
Why are electrons travel at greater than speed of light in television?
They don't. Nothing can exceed the speed of light. Electrons in a television travel much slower than the speed of light.
Is it possible to travel at the speed of light in water?
No, it is not possible to travel at the speed of light in water. Light travels at a slower speed in water compared to its speed in a vacuum, which is about 299,792 kilometers per second. The speed of light in water is approximately 225,000 kilometers per second.
Why speed of light is greater than speed of sound?
The speed of light is the speed at which electromagnetic waves propagate through a medium. The speed of sound is the speed at which acoustic waves propagate through a medium. As the speed of sound relies on the medium moreso than the speed of light, sound propagates much slower than light.
The speed in water is less than or greater than the speed of sound of air?
The speed of sound in water is greater than the speed of sound in air . For example, at 20 °C and 1 ATM pressure, the speed of sound in air is 343 m/s, and its speed in water is 1482 m/s. In general, the speed of sound in a medium = (bulk modulus of the medium/ its density)^0.5 where the bulk modulus indicates how compressible the medium is; the greater the bulk modulus, the more incompressible the medium is. So, although water has a density much greater than that of air, water is also much more incompressible than air. When you solve for the speed of sound for both water and air using the above formula, you will find that it is greater in water.
