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The speed of light is 300000000 in a vacuum.Does it always have this speed?
Wiki User
∙ 15y ago
The speed of light is exactly fixed at 299,792,458 m/s in the vacuum of freespace. It is an important physical constant usually denoted by the symbol c0. There is nothing faster. Light has always this speed in a vacuum, but it slows down when it travels through something, like glass, water, or air ... The greater the density of the matter that light is travelling through, the slower light travels.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoA vacuum, if it could exist, would be space with no kind of matter in it - none at all. But vacuum can contain energy. Thanks to quantum effects there are pairs of matter + anti-matter particles that appear spontaneously even in a vacuum and then destroy one another. But for a fleeting moment they will occupy the vacuum and so space free of all matter is not possible. Having said that, the density of matter in outer space is less than 1 hydrogen atom per cubic metre.
Wiki User
∙ 6y agoA vacuum is a volume of space with nothing in it: no gas, no atomic or subatomic particles, NOTHING. However, true vacuum is an ideal and cannot be achieved because of quantum fluctuations whereby it is possible for a particle-antiparticle pair to spontaneously appear and then annihilate one another.
Wiki User
∙ 11y agoLight moves at just under 300000 kilometers per second.
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How many times is light faster than your running speed?
Running speed is about 3 m/s Light speed is about 300000000 m/s That's 10^8 times faster
What is the fastest man has been able to travel compared to the speed of light?
the fastest man has traveled would be about 8000 m/s(the speed of a space shuttle in orbit) the speed of light is roughly 300000000 m/s. which is roughly 1/37500 the speed of light or .00002666667% the speed of light
Speed of light 3 x 10?
3 x 10 to the 8 power (meters per second)
What is the speed of light in water given that the water has a refreactive index of 1.333?
Use the relation:speed in a medium = speed of light in a vacuum / refractive indexi.e. v=c/nHencev = 300000000/1.333 = 225060000 m/s
Hwat is the speed of light measured in meters per second?
It is 300000000 metres per second, approx.
Light weight travels at what speed?
Approx 300000000 metres per second in vacuum.
How many times is light faster than your running speed?
Running speed is about 3 m/s Light speed is about 300000000 m/s That's 10^8 times faster
What is the fastest man has been able to travel compared to the speed of light?
the fastest man has traveled would be about 8000 m/s(the speed of a space shuttle in orbit) the speed of light is roughly 300000000 m/s. which is roughly 1/37500 the speed of light or .00002666667% the speed of light
Speed of light 3 x 10?
3 x 10 to the 8 power (meters per second)
What is the speed of light in water given that the water has a refreactive index of 1.333?
Use the relation:speed in a medium = speed of light in a vacuum / refractive indexi.e. v=c/nHencev = 300000000/1.333 = 225060000 m/s
Hwat is the speed of light measured in meters per second?
It is 300000000 metres per second, approx.
How fast does speed of light travel on venus?
Speed of light doesn't travel. Light travels.The speed of light doesn't vary depending on the planet; it may, however, vary depending what it goes through. For example, the speed of light in a vacuum is 300,000 km/second; the speed of light in glass is about 2/3 of that value.
Is the flash as fast as the speed of light?
NO.... the speed of light is always faster. =)
What travels 300000000 miles per second?
Nothing can travel at that speed. The speed of light is about 300,000,000 meters per second; this is equivalent to 300,000 kilometers per second or 186,000 miles per second.
What is the speed of a wave with the frequency of 10.0 Hz?
All waves in a vacuum move with the speed of light (3x108 m/s or 300000000 m/s if your not a fan of standard form), in air it is the same speed up til many decimal places
What correlation is seen between the angle of deviation and the speed of light?
The speed of light is always the same.
What dimension is the speed of light?
The speed of light c is always fixed at 299792458 m/s.
