Light Science...

Zereous Excentris
Zereous Excentris: So You say that Light only Travels at the Speed of Light
The Galaxy is Travailing at the speed of light yet at all angles around Our Star Light still hits Our Planet..
This Proves that Light is Travailing far Faster then what We would assume is the Max..

Our Planet is at the angle in which Our Galaxy Travels Say the Galaxy is Travaling this way -----> and Our Planet ( STAR ) Here ------ > o and yet the Light does not pool it still comes to Our Planet.. If Light has a Max Speed.. Why is it still coming to Our Planet..
This would suggest to Me that there is Faster then Light Technology..
(Edited by Zereous Excentris)
9 years ago Report
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Corwin
Corwin: First of all, the galaxy is not traveling at the speed of light (I have no idea where you got that notion).

Secondly, this is a question of "Relative Motion"... distant galaxies are traveling away from us at a great speed as a result of the expansion of the universe, but as the speed of light must remain constant (from our relative perspective) the wavelength of that light that reaches us is "stretched" - or in other words lowered in wavelength towards the red part of the spectrum of visible light.

This is known as "Red Shift". This is similar to how the speed of sound is constant, and how the sound of a passing vehicle lowers in pitch as it speeds away from you... the sound waves are compressed in front of it and are stretched behind it.

The opposite happens when an object is traveling towards you, and this is known as "Blue Shift".
Picture a train that is speeding towards you, and there's a spotlight in the front of it... we do NOT add the speed of the light to the speed of the train, but rather the wavelength of the light from the spotlight will be "compressed" in front of it, the wavelength of that light will be increased towards the blue part of the spectrum, but the speed of that light (from your relative perspective) remains constant.
-----------------

Look up:
Einstein's Theory of Relativity
Red Shift
The Hubble Constant

(Edited by Corwin)
8 years ago Report
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Zereous Excentris
Zereous Excentris: Who the Hell told me the Galaxy was travailing faster then the speed of Light lol.. Some bs on TV.. Thank GOD I dont watch that nonsense anymore.
8 years ago Report
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Zereous Excentris
Zereous Excentris: Yeah The First little Paragraph told me all I needed to Know
8 years ago Report
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Corwin
Corwin: Read the rest anyway... it doesn't hurt to have an understanding of basic Physics and Science, especially if you wish to aspire to be a Science Fiction writer and an inventor, as your profile seems to imply.
8 years ago Report
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Geoff
Geoff: Interesting side note: Light actually slows down as it passes through anything other than vacuum. The speed of light in a vacuum is (according to relativitistic theory) the maximum speed for anything in the universe.

However, through other media light slows. This is demonstrable by putting a pencil in a glass of water - the fact that light travels slower through water than the air is what causes the apparent bending of light to make the pencil appear at a different angle in the water than out.
8 years ago Report
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Blackshoes
Blackshoes: Interesting light slows down light also speeds up until it again reaches Light speed .
Therefore what is causing this action ? Seeing Light doesn't loss any energy in this process
It suggest something is acting upon it', to cause it to return to it's original speed ?
(Edited by Blackshoes)
5 years ago Report
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bitemykayak
bitemykayak: the speed of light is constant, time varies. This accounts for human perception that light can be faster or slower.
5 years ago Report
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bitemykayak
bitemykayak: Light passing through a medium may curve, this accounts for its "slower" arrival, its speed through spacetime is always uniform.
5 years ago Report
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Blackshoes
Blackshoes: I don't understand The light created within the center of the Sun' takes over nine hours to travel to the surface of the Sun ? That's very much slower than when light is traveling through space ?Light cannot escape the singularity That's either stopped or what ?Which brings into another Question? If a light bulb was turned on within a sealed mirrored sphere . When the light it's turned off ,would the light continue to illuminate within the sphere ?
(Edited by Blackshoes)
5 years ago Report
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bitemykayak
bitemykayak: I dont know the answer to that, but light may not be going on a straight path in the center of the sun. Inside am irror sphere thats turned off it would stop as the electricity that is creating the light has stopped.
5 years ago Report
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Blackshoes
Blackshoes: Off course the source has ended however according to what your telling me that light never stops ? Wouldn't the light remain within the mirror sphere >
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bitemykayak
bitemykayak: certainly it would reflect around and interfere with itself, until no light, of course this would happen so fast it appears intsanttaneously
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Corwin
Corwin: Hmmm... I have a different answer to that.

Now, this is purely hypothetical, because there's no such thing as a 100% reflective surface, but for the sake of argument, let's say that we have a sphere whose inner surface is 100% absolutely reflective across the entire electromagnetic spectrum...
... in theory, those photons WOULD bounce around inside that sphere forever, or until such a time as the sphere was opened and those photons were released.

But "illumination" isn't really the correct word... illumination is perceived when a photon is "absorbed" by something, like the retina of your eye for instance, and at that point the photon's journey comes to an end.
When a photon is absorbed, its energy is converted into different kinds of energy (like thermal or kinetic energy for example) and dissipates.
5 years ago Report
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Blackshoes
Blackshoes: Interesting
5 years ago Report
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bitemykayak
bitemykayak: True, but interference doesnt have to be 100%, smaller differences in photon alignment can do the trick
5 years ago Report
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Evelyn99
Evelyn99: Think it’s the wave lingth that change. A photon don’t have any mass and can not change or make smaller differences
5 years ago Report
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Blackshoes
Blackshoes: Ok So do we Know what is causing the Light, to continue to travel forever within the Imagined prefect Mirrored sphere ?
(Edited by Blackshoes)
5 years ago Report
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Evelyn99
Evelyn99: Well it bounces back and forth? I guess
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Evelyn99
Evelyn99: No light photon has been traveling for forever only a defined time
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Evelyn99
Evelyn99: Nothing with a start can go forever.
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Evelyn99
Evelyn99: And they stop or get destroyed when they hit things like an other sun and such
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Blackshoes
Blackshoes: EveIyn 99 I don't Understand Light doesn't travel forever ? Everything that I've been told says it does . Otherwise how could we see objects that are billions of light years away ?
5 years ago Report
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Evelyn99
Evelyn99: Well lets say our sun it sends out light all the time. That’ light is created there as a result of extra energy it has to release. That’s why the sun shines. So that new sunbeam starts travel lets say it hit earth the light beam will end Its jearny there. That will take the lightbeam 8 minutts to travle that jearny. Once the lightbean or proton hit earth and not get reflected back by something it’s energy will find different use and become something else or nothing
5 years ago Report
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Evelyn99
Evelyn99: Yes light beams that don’t crash into something will continue its jerny in the same steady speed of 187.000 miles per second. That you can see stars far away must mean that some of those photos crased into something like the retina in your eye or else you wouldn’t see it New light beams arrive here on earth after a 14 billion year lonely travel mark what we called the onserble universe because light behind that again haven’t had the time to hit us yet and therefore we don’t know what is there
5 years ago Report
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Blackshoes
Blackshoes: What is causing this unlimited amount of energy that Light seems to have .?
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