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Speed of Light

Denoted with the symbol "c," the speed of light is 299,792,458 metres per second and is often rounded as 300,000 kilometres per second or 186,000 miles per second.

1,290 Questions

The index of refraction is the ratio of the speed of light?

The index of refraction, denoted as n, is the ratio of the speed of light in a vacuum (c) to the speed of light in a given medium (v). It is mathematically expressed as n = c/v. A higher index of refraction indicates that light travels more slowly in that medium compared to a vacuum, affecting how light bends when entering or exiting different materials. This property is crucial in optics for designing lenses and understanding light behavior.

How many miles does a shark travel in one year?

The distance a shark travels in a year can vary greatly depending on the species and its habitat. Some sharks, like the great white, can travel thousands of miles annually, sometimes exceeding 10,000 miles during migration. Other species may cover shorter distances, ranging from a few hundred to several thousand miles. Overall, the migratory patterns and behaviors of sharks significantly influence their yearly travel distances.

If light passes into a material where the speed of light is faster does the light bend torward or away from the boundry between the material?

If light passes into a material where the speed of light is faster, it will bend away from the boundary between the two materials. This occurs because light travels more slowly in denser materials, and when it exits into a less dense medium (where it travels faster), it refracts away from the normal line at the boundary. This behavior is described by Snell's law.

Is aperture of a spherical mirror equals to its diameter?

No, the aperture of a spherical mirror is not necessarily equal to its diameter. The aperture refers to the effective opening through which light can enter and be reflected by the mirror, which can be smaller than the overall diameter of the mirror. In many cases, the aperture is defined by the area of the mirror that is used for focusing light, while the diameter is simply the total width across the mirror.

If the octagonal mirror in the Michelson apparatus were spun at twice the speed the produced light in the eyepiece would light still be seen At 2.1 times the speed why?

In the Michelson apparatus, the octagonal mirror is used to split a light beam and create interference fringes in the eyepiece. When the mirror is spun at twice the speed, the interference pattern would still be visible in the eyepiece because the speed of the mirror rotation does not affect the interference pattern itself. However, at 2.1 times the speed, the interference pattern may start to blur or become distorted due to the increased centrifugal force on the mirror affecting its stability and accuracy in splitting the light beam.

What is one tenth the speed of light?

Oh, that's a wonderful question. One tenth the speed of light is quite fast, like a gentle breeze through the cosmos. It's equal to about 67 million miles per hour, which is truly a remarkable speed. Just imagine all the beauty and wonder you could see on a journey at that pace.

Who first proposed the speed of light is 186000 miles per second?

The expected speed of light fell out of James Clerk-Maxwell's equations,

before it was measured and confirmed.

How do you convert speed of light to km per day?

There are 86,400 seconds per day and light travels at 299,792.458 kilometers per second. Therefore, multiplying 299,792.458 kilometers per second by 86,400 results in a velocity of:

  • 2.59020684 × 1010 kilometers per day

Why is the speed of light constant if it is constant?

It is constant, because it's determined by the electrical properties of the

vacuum or material stuff it's traveling through. So as long as the electrical

permittivity and magnetic permeability of the medium don't change, the

speed that they determine doesn't either.

The constant speed of light "C" (for example in E=mC2) is the speed of light in a vacuum. Light in other mediums, such as glass, moves slower and creates such effects as refraction.

How many kilometers per minute does light travel?

18 million kilometers per minute. (rounded)

(Technically, 17,987,547.48 kilometers per minute.)

Why is the statement the speed of light is 300 milllon miles per sec not always correct?

The speed of light, which is about 300,000,000 m/s, can be affected by the material that it is travelling through. Mediums such as air, glass, and water can slow light down. For example, in water, light travels at a speed of about 200,249,000m/s; in ammonia gas, it travels at 221,200,000m/s; and in ethanol, it travels 220,400,000m/s.

Why does your 1999 wrangler overheat at highway speed but doesn't when going slower?

Low coolant?

Air flow through radiator restricted?

Hoses collapsing under pressure?

Defective radiator cap?

What is the speed of light waves per miles?

Hope speed is needed in miles per second. Its speed is 1,86,000 miles per second

Give the estimated of the speed of light in vacuum?

Just now, in 2009, the figure considered to be the most accurate estimate of the speed of light in free space is 299,792,458 meters per second (186,282 miles per second).

Can you eliminate the speed controlled vacuum solenoid on a 1972 Cadillac Eldorado?

If you're asking about eliminating the vacuum advance on the distributor assembly, I don't think you can eliminate that without a computer controlled ingnition system. The vacuum solenoid is used to advance the spark under higher load, and works together with a centrifugal weighting system that adavances the spark based on RPMs.

What is is the speed of light?

The speed of light in a vacuum is 299,792,458ms-1 or 183,000 miles per second.

In scientific notation and rounding for ease of memorization, this is usually written as 3.00 x 108 m/s

It's value however is different for other media and can be calculated using the following formula:

v=c/n

That depends on what it's traveling through.

When it's traveling through nothing ... empty space, vacuum ... the speed

is 299,792,458 meters per second.

The speed is somewhat less in any material that light might travel through ...

air, water, glass, diamond, jello, etc. It's different in each material.

186,282.397 miles per second or 299,792,458 metres per second

The number to remember is: 300,000 kilometres per second

When a ray of light from air enters to glass what happens to wavelength?

The wavelength of the light decreases as it enters the glass due to the change in the speed of light in a different medium. This change in speed is related to the refractive index of the glass.

Why tube light glowing white colour?

Tube lights glow white because they contain a phosphor coating on the inside of the glass tube that absorbs the ultraviolet light produced by the electric discharge and re-emits it as white light. The combination of different phosphors creates a balanced white light output.

What would happen if the speed of light was infinite?

If the speed of light was infinite, all electromagnetic waves, including light, would travel instantaneously from one point to another. This would lead to significant changes in our understanding of physics, as the principles of relativity would no longer apply. It could also disrupt the stability of atoms and the structure of the universe as we know it.