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In which materials is the velocity of light greatest?
A vacuum, so no material
Velocity of light greatest?
in a vacuum
What material is the velocity of light the greatest?
Light travels at its "maximum velocity" in a vacuum. In any other medium, interference makes it appear to slow down. We're giving Čerenkov radiation the day off here.
What is the velocity of light in a material such as alcohol with a refractive index of 1.36?
The velocity of light in a material is given by the speed of light in a vacuum divided by the refractive index of the material. In this case, the velocity of light in alcohol with a refractive index of 1.36 would be about 220,000 km/s.
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.
Does the color of the laser affect the velocity of the light wave projected by the laser?
No, velocity and color are independent. Color is determined by frequency, and speed is determined by what material the light is traveling through.
What is The greatest velocity a falling object?
the greatest velocity a falling object reaches is terminal velocity
What is the greatest velocity a falling object reaches?
the greatest velocity a falling object reaches is terminal velocity
The average speed of light is greatest in?
The velocity of light travelling through a material relates to the index of refraction of that material. In this group, air has the lowest index of refraction, follow by water, fused quartz, and crown glass. This means like travels the fastest through air, then water, then fused quarts, and finally glass.
What is the greatest velocity a falling objecy reaches?
The greatest velocity, achieved when the acceleration due to gravity is balanced by the aerodynamic deceleration, is called the terminal velocity.
What of a material indicates how much the speed of light in the materials changes as light passes through?
The property of a material that indicates how much the speed of light changes as it passes through is called the material's refractive index. This index is a measure of how much the speed of light is reduced in a material compared to its speed in a vacuum. The higher the refractive index, the more the speed of light is reduced in that material.
Do the color of a laser affects the velocity of light wave by the laser?
No. The color is determined by the light's *frequency*, but, as Einstein proved, there is one and only one velocity at which light can propagate, c or the speed of light. All light propagates at this same velocity (there are ways to slow it down slightly, e.g. by passing through dense material, but this affects all light the same). The speed of light being a constant is one of the very foundations of modern physics.
