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Other => Off-topic => Topic started by: check_status on June 25, 2012, 04:58:41 AM



Title: How fast is the speed of light?
Post by: check_status on June 25, 2012, 04:58:41 AM
The speed of light in a vacuum, usually denoted by c, is a universal physical constant important in many areas of physics. The value is explained as 299,792,458 metres per second, or represented as 186,282.397 miles per second. From a perspective, this may appear correct but in actuality is incorrect. The photon does not travel in a straight line, it travels in a corkscrew, that 2-dimensionally we call a wave. Light does not travel at 186,282 miles per second, in actuality, the particle of light travels 3.41 times faster than we are lead to believe.

635,222.97377 miles per second is the true speed of light.


Title: Re: How fast is the speed of light?
Post by: cbeast on June 25, 2012, 05:17:24 AM
Well, straight lines do not exist in nature either. The corkscrew analogy you give offers no explanation for that behavior. I believe you are almost right, but instead of a spiral, you are looking at fluid-dynamic vortices created by the density of the vacuum as a state of the gravitic temperature.


Title: Re: How fast is the speed of light?
Post by: Gladamas on June 25, 2012, 06:07:48 AM
*Ahem* and what about the other eight spacial dimensions that photons travel through?


Title: Re: How fast is the speed of light?
Post by: Electricbees on June 25, 2012, 06:19:25 AM
I'm not even going to start on this one...  :P



Title: Re: How fast is the speed of light?
Post by: realnowhereman on June 25, 2012, 01:28:37 PM
The speed of light in a vacuum, usually denoted by c, is a universal physical constant important in many areas of physics. The value is explained as 299,792,458 metres per second, or represented as 186,282.397 miles per second. From a perspective, this may appear correct but in actuality is incorrect. The photon does not travel in a straight line, it travels in a corkscrew, that 2-dimensionally we call a wave. Light does not travel at 186,282 miles per second, in actuality, the particle of light travels 3.41 times faster than we are lead to believe.

On the scale you're talking about, there is no such thing as "the particle of light", and it certainly isn't corkscrewing.  We might perhaps think of the vector sum of the electromagnetic wave components (electric and magnetic waves at right angles) to be drawing out a corkscrew, but nothing is physically travelling along that path.

I think you're making the classic mistake of carrying the analogy we use to represent the physics of the universe to ourselves too far, and treating it as real.

There are no particles and there are no waves.  There is light; and we sometimes find it convenient to think of it as a TEM wave, sometimes as a packetised ball of energy we call a particle.  Neither of those is real -- there is only "light".


Edit: here's a picture that I find helpful:

http://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Electromagneticwave3D.gif/220px-Electromagneticwave3D.gif


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 04:04:37 PM
that 2-dimensionally we call a wave

OMG

also learn to Wave–particle duality


Title: Re: How fast is the speed of light?
Post by: cmg5461 on June 25, 2012, 06:02:13 PM
The 'speed' of light is different than the 'velocity' of light.


Title: Re: How fast is the speed of light?
Post by: cmg5461 on June 25, 2012, 06:04:40 PM
There are no particles and there are no waves.  There is light; and we sometimes find it convenient to think of it as a TEM wave, sometimes

Waves do exist.  Sound waves.  Sound moves through a medium by means of high and low pressure states. (analog)

Who's to say photons aren't prone to vibration?



Title: Re: How fast is the speed of light?
Post by: realnowhereman on June 25, 2012, 07:23:13 PM
There are no particles and there are no waves.  There is light; and we sometimes find it convenient to think of it as a TEM wave, sometimes

Waves do exist.  Sound waves.  Sound moves through a medium by means of high and low pressure states. (analog)

Who's to say photons aren't prone to vibration?

I was talking in the context of light.  Light is neither a wave nor a particle, but sometimes behaves as one or the other.

I'm not even going to bother with your nonsense about vibrating photons.  Are you going to tell me about the ether that the waves can vibrate in next?


Title: Re: How fast is the speed of light?
Post by: cbeast on June 25, 2012, 08:09:01 PM
Space-time can be compressed. In many ways it acts like a medium. Light bends around dense objects like water around a rock. If space-time is a medium, wouldn't it make sense for that medium to have differing states? Most space would be fluid. Black holes may be frozen. Planck-time may be plasma. Dark Matter may be the gaseous state of space-time. What we call matter is a suspension of remnant solid space-time as particles that decay based on the temperature of the gravity they exist in, kinda like floating ice.


Title: Re: How fast is the speed of light?
Post by: realnowhereman on June 25, 2012, 09:38:14 PM
I don't know about all of that; but I do like the idea that from the point of view of the light, it only travels in straight lines, it's just that the space time we see is bent.  Even better, from the light's point of view it's everywhere along its path at once, at infinite speed.  I wonder what black holes are like from the point of view of light -- the infinite curvature of the black hole meets the infinite speed of the light.



Title: Re: How fast is the speed of light?
Post by: PatrickHarnett on June 25, 2012, 09:44:02 PM
What is the height of the wave for the photon?  If it is less than the diameter of the energy quanta, is it actually travelling 3.41 times further or just wobbling around an interior point?  Also, what about particle spin, are you measuring a point on the surface as it s[ins on the wave trajectory?

(BTW - I have someone in my office who can answer these questions, but thought it would be better to see the results here.)


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 10:07:25 PM
What is the height of the wave for the photon?  If it is less than the diameter of the energy quanta, is it actually travelling 3.41 times further or just wobbling around an interior point?  Also, what about particle spin, are you measuring a point on the surface as it s[ins on the wave trajectory?

(BTW - I have someone in my office who can answer these questions, but thought it would be better to see the results here.)

height of the wave?
I'm assuming you mean wavelength, it's not a constant value the wavelength of the photon as it depends on how "energetic" that photon is. See http://en.wikipedia.org/wiki/Electromagnetic_spectrum

Energy quanta is a measure of energy. It has no diameter.

Also while talking about a particle spin you suppose that it's not a wave. Particles are not waves.
We separate both concepts particle and wave to understand better the physics phenomenons.


Title: Re: How fast is the speed of light?
Post by: Gladamas on June 25, 2012, 10:11:37 PM
What is the height of the wave for the photon?  If it is less than the diameter of the energy quanta, is it actually travelling 3.41 times further or just wobbling around an interior point?  Also, what about particle spin, are you measuring a point on the surface as it s[ins on the wave trajectory?

(BTW - I have someone in my office who can answer these questions, but thought it would be better to see the results here.)

height of the wave?
I'm assuming you mean wavelength, it's not a constant value the wavelength of the photon as it depends on how "energetic" that photon is. See http://en.wikipedia.org/wiki/Electromagnetic_spectrum

I think he's asking what double the amplitude of a light ray is.


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 10:19:24 PM
I don't know about all of that; but I do like the idea that from the point of view of the light, it only travels in straight lines, it's just that the space time we see is bent.  Even better, from the light's point of view it's everywhere along its path at once, at infinite speed.  I wonder what black holes are like from the point of view of light -- the infinite curvature of the black hole meets the infinite speed of the light.



In the physics before Maxwell (to simplify this a bit) light is a transverse wave. It doesn't travel strictly in straight lines. That's why some materials are transparent and we can see through them. See this http://en.wikipedia.org/wiki/Huygens%E2%80%93Fresnel_principle


Title: Re: How fast is the speed of light?
Post by: PatrickHarnett on June 25, 2012, 10:21:57 PM
I don't especially care about the wavelength, if it's x-ray or visible spectrum.  Unless the amplitude is linked to wavelength which is something I wasn't considering.

As for energy quanta having no diameter, photons are mainly energy, like electrons or protons, and are built on a nice assembly of quarks (I suppose) so there would be a size  associated with that.

How big is a photon?  I haven't checked recently.


Title: Re: How fast is the speed of light?
Post by: pazor on June 25, 2012, 10:24:55 PM
2fast4you
 ;D


Title: Re: How fast is the speed of light?
Post by: juggalodarkclow on June 25, 2012, 10:27:17 PM
... hits light switch.... finds out the speed of light.......


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 10:27:42 PM
I don't especially care about the wavelength, if it's x-ray or visible spectrum.  Unless the amplitude is linked to wavelength which is something I wasn't considering.

As for energy quanta having no diameter, photons are mainly energy, like electrons or protons, and are built on a nice assembly of quarks (I suppose) so there would be a size  associated with that.

How big is a photon?  I haven't checked recently.

Well for a wave like a photon with a good defined wavelength and frequency,  you cannot spot it in space ( it occupies all of it).
When talking about a dense electromagnetic field we need to talk about a "package of photons", "many electromagnetic waves". In that case the efective wavelength of the package of photons gives us the size.


Title: Re: How fast is the speed of light?
Post by: PatrickHarnett on June 25, 2012, 10:30:58 PM
No, I was talking about single photons and they have been experimenting with singles for decades.

The "well defined" frequency and wavelength is directly related (inverse) adjusted for density of the medium unless I've really forgotten all of my physics.


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 10:33:41 PM
No, I was talking about single photons and they have been experimenting with singles for decades.

The "well defined" frequency and wavelength is directly related (inverse) adjusted for density of the medium unless I've really forgotten all of my physics.

frequency is invariable, depends only from the emitting point. Wavelength yes.


Title: Re: How fast is the speed of light?
Post by: PatrickHarnett on June 25, 2012, 10:39:14 PM
?? frequency determines colour in the visible spectrum


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 10:40:56 PM
?? frequency determines colour in the visible spectrum

wavelength


Title: Re: How fast is the speed of light?
Post by: Gladamas on June 25, 2012, 10:59:26 PM
?? frequency determines colour in the visible spectrum

?? frequency determines colour in the visible spectrum

wavelength

Frequency and wavelength are inversely proportional: c=f*λ

So they can both be used to determine the color/electromagnetic wave type.


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 11:01:44 PM
?? frequency determines colour in the visible spectrum

?? frequency determines colour in the visible spectrum

wavelength

Frequency and wavelength are inversely proportional: c=f*λ

So they can both be used to determine the color/electromagnetic wave type.

I'm sorry to correct this but no, it's the wavelength that gives that property to the light.
Also in this case c=f*λ, c is not a constant because of different density materials.
here's an example http://en.wikipedia.org/wiki/Cherenkov_radiation


Title: Re: How fast is the speed of light?
Post by: Gladamas on June 25, 2012, 11:05:41 PM
?? frequency determines colour in the visible spectrum

?? frequency determines colour in the visible spectrum

wavelength

Frequency and wavelength are inversely proportional: c=f*λ

So they can both be used to determine the color/electromagnetic wave type.

I'm sorry to correct this but no, it's the wavelength that gives that property to the light.
Also in this case c=f*λ, c is not a constant because of different density materials.
here's an example http://en.wikipedia.org/wiki/Cherenkov_radiation

When light goes through a material, the apparent speed may be less than the speed of light in a vacuum, but the actual speed of the photons is still at 299,792,458 meters/second, they are simply bouncing off, being absorbed, and reemitted by atoms in the material, not going in a completely straight line.


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 11:09:23 PM
?? frequency determines colour in the visible spectrum

?? frequency determines colour in the visible spectrum

wavelength

Frequency and wavelength are inversely proportional: c=f*λ

So they can both be used to determine the color/electromagnetic wave type.

I'm sorry to correct this but no, it's the wavelength that gives that property to the light.
Also in this case c=f*λ, c is not a constant because of different density materials.
here's an example http://en.wikipedia.org/wiki/Cherenkov_radiation

When light goes through a material, the apparent speed may be less than the speed of light in a vacuum, but the actual speed of the photons is still at 299,792,458 meters/second, they are simply bouncing off, being absorbed, and reemitted by atoms in the material, not going in a completely straight line.
nope http://en.wikipedia.org/wiki/Refractive_index
It's true that each photon travels at constant "c". But you still missing something, the atomic interaction with the photon.


Title: Re: How fast is the speed of light?
Post by: Gladamas on June 25, 2012, 11:18:07 PM
?? frequency determines colour in the visible spectrum

?? frequency determines colour in the visible spectrum

wavelength

Frequency and wavelength are inversely proportional: c=f*λ

So they can both be used to determine the color/electromagnetic wave type.

I'm sorry to correct this but no, it's the wavelength that gives that property to the light.
Also in this case c=f*λ, c is not a constant because of different density materials.
here's an example http://en.wikipedia.org/wiki/Cherenkov_radiation

When light goes through a material, the apparent speed may be less than the speed of light in a vacuum, but the actual speed of the photons is still at 299,792,458 meters/second, they are simply bouncing off, being absorbed, and reemitted by atoms in the material, not going in a completely straight line.
nope http://en.wikipedia.org/wiki/Refractive_index
It's true that each photon travels at constant "c". But you still missing something, the atomic interaction with the photon.

I thought I defined atomic interaction pretty clearly.


Title: Re: How fast is the speed of light?
Post by: swissmate on June 25, 2012, 11:20:34 PM
?? frequency determines colour in the visible spectrum

?? frequency determines colour in the visible spectrum

wavelength

Frequency and wavelength are inversely proportional: c=f*λ

So they can both be used to determine the color/electromagnetic wave type.

I'm sorry to correct this but no, it's the wavelength that gives that property to the light.
Also in this case c=f*λ, c is not a constant because of different density materials.
here's an example http://en.wikipedia.org/wiki/Cherenkov_radiation

When light goes through a material, the apparent speed may be less than the speed of light in a vacuum, but the actual speed of the photons is still at 299,792,458 meters/second, they are simply bouncing off, being absorbed, and reemitted by atoms in the material, not going in a completely straight line.
nope http://en.wikipedia.org/wiki/Refractive_index
It's true that each photon travels at constant "c". But you still missing something, the atomic interaction with the photon.

I thought I defined atomic interaction pretty clearly.
But you didn't define that making those  "things", being absorbed reemitted etc etc, takes more time than the tame that it would be to travel at constant "c".
http://en.wikipedia.org/wiki/Variable_speed_of_light


Title: Re: How fast is the speed of light?
Post by: cbeast on June 26, 2012, 12:02:59 AM
The wave-like appearance of light is caused by self-sync behavior of a dynamic force on the static medium of space-time. It's like water going downhill that twists and turns (around pi) or lots of people walking over a poorly stabilized bridge, except it has more dimensions involved and travels in vortexes. What we measure as energy frequencies doesn't change unless the gravitic temperature of the space-time medium changes. The vortex in which energy radiates when polarized (like lasers) demonstrates that the space-time medium it travels through can also be warped by energy. This is confirmed by laser cooling experiments that cause the atom to decay as its suspension medium changes, like carbonated bubbles escaping an open soft-drink.

The speed of light itself will depend on the state of space-time. I predict that future interferometer measurements will detect anomolous energy that seems to come from outside the edge of the Universe. What we'll see is a quasar pulsing through dark-matter (slush-like) space-time between universal mud-holes.