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The speed of light depends on the electrical properties of whatever substance
it's in. It has nothing to do with what substance it used to be in before, or what
substance it's going into next. -- If it goes from air into vacuum, its speed increases.
-- If it goes from air into water, its speed decreases.
-- If it goes from water into air, its speed increases.
-- If it goes from water into diamond or jello, its speed decreases.
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The speed of light will be minimum while passing through?
While passing through glass.
Define refractive index in terms of light?
Refractive index is a physicsâ?? measurement used to figure out the bend length a ray of light takes when passing through objects.
Light incident upon a pane of glass shows down in passing through the glass. Does it emerge at a slower speed or at its initial speed?
The speed of light depends on the electrical characteristics of whatever medium it happens to be in at that instant. It has one speed in vacuum, another speed in air, another in glass, another in water, and yet another speed in jello. When passing from a more-optically-dense medium to one where its speed is higher, it doesn't need a stomp on the gas to 'accelerate' to the higher speed.
How fast is speed of light?
It about 2*10^8 m/s.The speed of light is slower when passing through glass, or any other transparent substance, compared to the speed of light passing through a vacuum. The actual speed depends on the refractive index of the glass, which depends on the composition of the glass.
Can the speed of light be calculated?
Answer: The speed of light was determined through experimentation, such as the timing of moons passing behind Jupiter. Many formulas are based upon the speed of light, but that number had to be determined beforehand. Light travels 299,792,458 meters per second (or 186,282.397 miles per second in a vacuum. Answer: Yes, the speed of light can be deduced from the electrical properties of empty space. However, in practice it is more accurate to measure the speed of light.
Does light travel at its slowest speed when passing through a vacuum?
No, light is at its fastest in a vacuum.
What happens to the energy that light gains from a Gravity Assist when passing by a mass in space since light cannot increase in speed?
Light cannot increase its speed, but it can increase its energy. Doing so will increase its frequency, or equivalently shorten its wavelength. It will thus be blue shifted.
What are the three ways in which the strength of induced emf in electric generator can be increased?
Increase the current, increase the windings and increase the metal core mass.
Does the speed of light is same in all inertial reference frames?
Yes, as long as the light is passing through vacuum.
The speed of light will be minimum while passing through?
While passing through glass.
Does speed of light increase as the wavelength of a light wave increase?
No. All wavelengths of light, and all other forms of electromagnetic waves too, all travelat the same speed, just as long as they remain traveling through the same stuff.
Is the speed of light slower in air?
Visible light slows down by a VERY small amount when in air, compared to its speed in a vacuum. It slows down a bit more passing through water, still more passing through glass, and quite a bit passing through a cut diamond (this is what gives a diamond it's "fire"). None of these "slowdowns", however are remotely enough for us to actually be aware of.
Is there any possible way to decrease the speed of light without any form shifting of the light beam?
When light passes through anything it slows down. It is only when it is passing through a vacuum that the 'constant' speed (approximate value of 3×108 metres per second) applies.
What is transmitting light?
Light is said to be transmitting when it is passing through any matter i.e. not through a vacuum but through a gas, liquid or solid. Light waves move at their highest speed when passing through a vacuum and slow down when passing through matter due to their interaction with the electrons around atoms, molecules or crystal lattices. Optical fibres made of special types of glass are used to transmit light signals in a similar way to copper wires used to transmit electrical signals.
Define refractive index in terms of light?
Refractive index is a physicsâ?? measurement used to figure out the bend length a ray of light takes when passing through objects.
What was albert Einstein's contribution to the speed of light?
There was none. The speed of light was precisely the sameafter his passing as it had been before his birth.
Could dark matter be causing the cosmic speed limit (the speed of light) as light gets slowed down when passing through dark matter?
That's completely unrelated. Light usually slows down when passing through ANY matter. It does not react with dark matter (which is what makes the "dark matter" invisible in the first place), except through the gravitational interaction. The "cosmic speed limit" is a limit on how fast ANYTHING can travel (matter, energy, or information); it is just conventional to call it the "speed of light". This speed limit is for a vacuum - the assumption is NO normal matter, and NO dark matter; the presence of any matter may slow light down slightly.
