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benzun_1999
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Why is the speed of light a constant?
Originally posted by benzun_1999
This is what I read regarding speed of light in a book in my school library.
This is what it said (in my own words).
In the morning when the light having a constant speed of c strikes the Earth which is at a speed of x in the opposite direction.
The speed that a possible detector would record will be c+x. but even at condition the speed of light remains the same c. (this is the explanation given by the book.)
Now here is my question is this explanation correct?
-Benzun.
All for God
Originally posted by speso72
In mathematics they use the speed of light (186,271.6 miles per second) as a constant in order to prove theorems and equations, just as they often use Earth to equal 1 (i.e. 3.4 AU's). However, in reality the speed at which light travels is not constant and the speed of light can be altered. As light passes through window glass, the speed slows.
Originally posted by Integral
Actually the speed of propagation does not change. As light is passing through a medium it is adsorbed by the atomic structure, then after a brief pause it is re-emitted, then travels at c until it is adsorbed by the next atom. Thus the light speed is not changed but simply delayed by the atomic structure.
No, you look right to me - this is just a material with a very high index of refraction.Originally posted by sharpstones
I am by no means an expert on this subject, but from reading the article it seems that it does not go against what Integral said at all. I think it's just a confusing matter of semantics since the article uses terms like "slow down," but in one of the paragraphs it says that, "Hau explains that light entering the atomic entanglement transfers its energy to the atoms. Light energy raises the atoms to higher energy levels in ways that depend on the frequency and intensity of the light." This seems to imply that the light is actually being absorbed into the atom. Somebody please correct me if I'm wrong.
Originally posted by god
If light is stopped does that not create an event horizon?
Originally posted by benzun_1999
This is what I read regarding speed of light in a book in my school library.
This is what it said (in my own words).
In the morning when the light having a constant speed of c strikes the Earth which is at a speed of x in the opposite direction.
The speed that a possible detector would record will be c+x. but even at condition the speed of light remains the same c. (this is the explanation given by the book.)
Now here is my question is this explanation correct?
-Benzun.
All for God
Originally posted by mormonator_rm
If you leave light alone it acts very clearly as a wave
The speed of light is the fastest speed at which energy can travel in a vacuum. It is approximately 299,792,458 meters per second.
The speed of light is considered a constant because it does not change, regardless of the observer's frame of reference. This means that no matter how fast an object is moving, the speed of light will always be the same.
The speed of light was first measured by Danish astronomer Ole Christensen Roemer in 1676 using a method called the "method of eclipses." He observed the timing of Jupiter's moons, and noticed that the time between eclipses varied depending on the Earth's distance from Jupiter. From this, he was able to calculate the speed of light.
Based on our current understanding of physics, it is not possible for anything to travel faster than the speed of light. This is because as an object approaches the speed of light, its mass increases and it requires more and more energy to accelerate further. Therefore, it would require an infinite amount of energy to reach the speed of light, making it impossible to surpass.
The speed of light plays a crucial role in many aspects of our daily lives, even if we may not realize it. For example, it allows us to see things as they are, as light travels from objects to our eyes at a constant speed. It also plays a crucial role in communication technology, such as in fiber optic cables used for internet and telephone communication. Additionally, the speed of light is a fundamental constant in many scientific equations and theories, including Einstein's theory of relativity.