The speed of light.?

Question

What is it?

Answer 1

299 792 458 m / s

Answer 2

The speed of light in air is 3 x 10^8 m/s.
The speed of light will change as it travels to another medium.
E.g. Speed of light change as it travel from air to water. This causes bending of light which is also called refraction.

Answer 3

the speed of light is the speed at which light travels through a vacuum. it is a constant and cannot be altered. and with that, it is believed that no object can travel faster than the speed of light, thus leading to einsteins theories of relativity. the letter c is used to represent the speed of light, as in E = mc^2

Answer 4

3 x 10^8 m/s

Answer 5

According to Steven Hawking's "A Briefer History of Time," it's approximately 186,000 miles per second.

Answer 6

186,000 feet per second. The distance that light travels in one second.

Sound travels at 1100 feet per second.

That is why you can see light at a greater distance than you can hear a sound.

Answer 7

3*10 to the power of 8 ms-1.

but changes through the medium which it is travelling through. This results in refraction.

Answer 8

186,000 miles per second.

3 x 10^8 meters per second.

Answer 9

Why the quantum of light has such magic,
constant: speed of motion с = 1 ?
* * *
On the planet of Earth there is the law - that every newborn cries,
and each nestling in order to be born must break the shell of the egg.
His new life starts with this moment.
In Kingdom of eternal cold / Vacuum / there is its law :
each quantum of light for its birth should make internal impulse h = 1
and then it gains constant speed of motion с = 1.
His new life starts with this moment.
===================================
According to quantum theory, the particle's mass increases
at approaching to the speed of light quantum.
And at achievement of this speed,
the particle's mass becomes infinite.
But the quantum of light is real particle and
its mass is particular and not infinite.
How to leave this contradiction?
And the scientists invented an artful way: the quantum
does not possess the mass of rest and it is always in motion.
All other material particles have the mass of rest and
only quantum of light has a privileged position.
Why?
May be it so differs from material particles, that it is not material, is it?
And if it is not material, what is it?
It is written in the Bible:
«And God said: let there be light, and there was light.
And God saw the light and that it was good».
However, the Scientist interfered with the God's business and added:
« But let the quantum of light not possess the mass of rest
and let it move eternally.
And who will doubt, let him be betrayed to anathema and fire! ».
Yes! It is difficult to be quantum of light.
All particles have mass of rest, and it does not.
All particles can have a rest, lie down, have a sleep.
And it, poor, does not have a second of rest, all the time in motion.
For what sins, I ask.
And as though God is pleased with it and praises it.
Only evidently, the quantum of light did not please the scientist
with something, and he is angry about it and without pity runs it in the world.
God, save and protect me from such mentality.
============ ===========
The quantum of light has not
mass of rest equal to zero.
=============
The Soviet/Russian academic S. Vavilov suggested an
interesting idea. In his book ' Isaac Newton' he wrote.
The force, according to the Newton,s Second Law,
is equal to : F= ma.
This force is possible to consider as absolute independent
quantity - impulse. When in case with light quanta
the impulse is equal to: mc.
He continued.
Let us now imagine that light quanta falls on a black body,
and it absolutely absorbs this light quanta
( it means light quanta stops).
Then, according to the Lebedev,s law, light quanta
renders pressure on the black body: E/c.
Therefore it is possible to write: mc=E/c.
It means that according to Classic physics the stopping
light quanta has rest mass ( potential energy/mass):
M=E/c^2. (E=Mc^2).
=========================
The potential energy/mass of light quanta
can transform in its kinetic energy.
===============
Quantum of light is a privileged particle.
Only the speed of a light quantum in Vacuum has
a maximal, constant, absolute quantity of c=1.
No other particle can travel with the speed c = 1.
If quantum of light flies always rectilinearly c=1, it is a mad one.
Is he really mad?
No.
In Vacuum, in a condition of rest its internal impulse is equal to zero h=0.
But Quantum of Light has two kinds of internal impulse.
1) Under one internal impulse (Planck,s spin h =1)
a quantum of light flies rectilinearly with speed (c = 1).
A quantum of light behaves as a particle.
2) Under other internal impulse (Goudsmit - Uhlenbeck's spin h = h / 2pi)
a quantum of light rotates around of his diameter and is known as electron.
A quantum of light behaves as a wave.
Very strange particle is quantum of light.
Quantum of light stays in Vacuum and on it nobody and nothing renders influence.
It is independent and makes a decision in which of three conditions it occurs.
1. In a condition of rest its internal impulse is equal to zero h=0.
2 .In a condition of uniform rectilinear movement its impulse h=1.
3. In a condition of rotation around of his diameter its impulse h =h/2pi.
So it can work only with particle that has his own consciousness.
They are alive, spiritual particles.
His own consciousness is not static but can develop.
The development of conscious scale goes " from vague wishes up to a clear thought ".
This evolution proceeds during hundred millions (billion) years.
===========
The secret of words 'God', 'soul ', 'religion', ‘ Existence’,
'dualism of consciousness', 'human being' hide
in the “Theory of Light quanta”.
============
http://www.socratus.com
===============

Answer 10

Are you watching! Dont blink now! AW you blunked