Speed of Light

It will take light about 0.000834 seconds or 834 millionths of a second to travel

250 kilometers in vacuum, somewhat longer in any material substance.

The speed of light is 300,000 kilometers per second. If you multiply that by 60, you have the speed in kilometers per minute.

Speed of light is a constant factor. It is approximately 188,000 miles per second.

3/4th

you get your spectrum by placing a prism in front of a single ray of white light, then by putting another prism opposite it the light will then go through that prism and in the end you will end up back with your single ray of light that you started with.

C

18,000,000km per minute

100 seconds.

1 m/s

3x108

1 hour = 3600 seconds so the answer is 670616629/3600 = 186282.4 mps

It looks like a tiny bit slower than 11/2 feet every second.

At speeds near the speed of light, the formulae from the Theory of Relativity show that there are discrepancies with classical physics - for example, in adding velocities. These discprepancies have been verified by many experiments.

In theory the discrepancies arise at any speed, but if the speed is much lower than the speed of light, the difference between classical physics and the more accurate Theory of Relativity is so insignificant that it can be ignored, and you can safely use the simpler formulae of classical physics.

Since a microsecond is a millionth of a second, just divide the distance light travels in one second, by a million.

The speed of light in a vacuum is approximately 299,792 kilometers per second.

Because it only takes 8 minutes for sunlight to reach Earth, but it takes 4 hours to reach Neptune.

The easy-to-use equation is: c = 299,792,458 m/s


The somewhat more detailed equation is:

c = the reciprocal of the square root of the product of

(the electrostatic permittivity of vacuum) x (the magnetic permeability of vacuum) .


I almost always use the first one.

If he had used an ordinary mirror he would only get one reflection per revolution, and since the light travels so fast his motor speed would have to be impossibly high. So he put 8 mirrors on the spindle and the rotational speed then needed to be only 1/8 of that for a single mirror.

I have never seen one of these instruments but it stands to reason the compensating plate is used to adjust the instrument to local operating conditions. It is not too different, in practice, from the idea of an aiming-off device on some cameras( called also a perspective correction device) turning a knob on an index ( very similar to the regulator quadrant on a fine watch_ will move the lens assembly left or right on the scale, affecting the composition and possibly eliminating unwanted stuff- for example one wants a picture of a statue ( I can think of the Old placement of the Columbus statue at Journal Square without getting the Flagpole behind it in the picture. could come in handy. corrective adjustments are vital to scientific instruments which may be used in widely differing latitudes, magnetic fields etc. It is like the declination adjustment on a compass.

Obstructions, black holes, etc.

If speed approaches the speed of light, the mass of any object will increase. This is not just theory; it is observed on a daily basis. Not with spaceships, of course; the technology is not ready yet - but with subatomic particles in accelerators.

The speed of light in vacuum is defined to be exactly 299,792,458 metres per second.

It is called as c.

The speed of light does not have a temperature.