Speed of light determined by medium it travels through

Beyond the boundaries of established science an avalanche of exotic ideas compete for our attention. Experts tell us that these ideas should not be permitted to take up the time of working scientists, and for the most part they are surely correct. But what about the gems in the rubble pile? By what ground-rules might we bring extraordinary new possibilities to light?

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Speed of light determined by medium it travels through

Light can almost come to a stop when it travels through a bose einstein condensate, because this is a very dense medium
The shapiro effect, used to elusively prove relativity, actually shows that as light goes through the gravitational field of a celestial body, it slows down, since it is denser in that area, increasing the time it takes the light to return in an experiment.
lw1990

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Re: Speed of light determined by medium it travels through

It is not a "speed" of light; it is a rate of induction.

- joe
LunarSabbathTruth

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Re: Speed of light determined by medium it travels through

I have no idea what the phrase 'rate of induction' means
but the speed of light is a measurement of how quickly it moves through a finite volume
the ambient density of that volume (such as the atmosphere of a planet, or volume between galaxies having very little density) determines the speed of light; light travels extraordinarily faster between galaxies than it does through galaxies, for example.
lw1990

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Re: Speed of light determined by medium it travels through

Dowdye created his [Extinction Shift Principle](http://extinctionshift.com/) on this idea.

According to wikipedia, the speed of light through a medium has been tested:
https://en.wikipedia.org/wiki/Fizeau_experiment
If you agree with wikipedia or not, it is interesting to check it out.
More ** from zyxzevn at: Paradigm change and C@

Zyxzevn

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Re: Speed of light determined by medium it travels through

lw1990 wrote »

I have no idea what the phrase 'rate of induction' means

It means that light will always find the shortest Time Path through any given medium.
Like any electrical induction.

(search Electric Permittivity)
seasmith

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Re: Speed of light determined by medium it travels through

It means that light will always find the shortest Time Path through any given medium.

I also don't know what the concept 'time path' is, but I suspect you just mean shortest path/path of least resistance type deal

That Fizeau experiment is interesting, but apparently what happened is light moving against the flow of some water traveled slower than light moving with the flow of some water - that doesn't test the speed of light through different densities, it tests the speed of light through different ambient velocities.

Probably the reason the results aren't quite as substantial as they originally expected is because light passing through a medium like water phases between wave and particle, and only during the particle phase is it really affected by the velocity of the water - resulting in the affected trajectory being much less than it would be if it was always a particle.
Same concept as shining a flashlight at the hull of the international space station - in outer space, all you would see is basically the light on the hull, with no light beam between the flashlight and hull. This is because there is so little density/objects there (relative to the Earth's atmosphere) that not much light phases into particles (photons) until it reaches high density (hull). Our eyes only detect the photons, not the waves, so we don't see the light between the flashlight and the hull. On the other hand, if you have a really dirty/dusty bathroom and stir things up, with the lights turned off and shine a flashlight in there, you will probably see the light beam as it collides with the dirty/dusty particulates, as well as the target wall in the bathroom.
lw1990

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Re: Speed of light determined by medium it travels through

`
I also don't know what the concept 'time path' is,

If you were riding your bike, you might just say "quickest route".
Time Path was i think Richard Feynman's term, the 'time' factor coming from electric Permittivity/Susceptibility studies.
(did you do any reading ??)
https://en.wikipedia.org/wiki/Permittivity

To simplify, narrow the light down to a regular flashlight beam and shine it into a pan of water. The electric matrix of the water molecules will present one path where transmission is quickest.
Other possible angles of contact will reflect the beam.
seasmith

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Re: Speed of light determined by medium it travels through

What you are saying does not make any sense to me - when light is aimed at/through a bose-einstein-condensate, its ultimate path would be to go through the condensate - there is no alternative quicker path to go the same exact route, it would be quicker to go around the condensate but light doesn't do this, plus, it would not go through where you wanted, so while quicker to get to a destination it cannot be quicker to go the same path, because it is the same path.

Here is a picture of a flashlight turned on submerged in water:
https://i.ytimg.com/vi/V_BhofZC5bU/maxresdefault.jpg

The shape of the light beam is irrelevant for how fast the light travels, its speed, no matter the angle or what it bounces off of, is determined by the medium it is traveling through (including the gravitational field of the Earth since this picture was somewhere in Earth's gravitational field).

What I mean is this: the travel time of light from point A to point B can vary if you put a bunch of mirrors between point A and B to make the light bounce around before getting to point B, and while that increases the time it takes to reach point B, it doesn't necessarily slow the light down, just makes a longer path. The medium light travels through is determining how fast it goes, since mediums vary (even the Earth's gravitational field varies at sea level vs at the top of mount Everest) then speed of light varies.
lw1990

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Re: Speed of light determined by medium it travels through

When it comes to the reduction in speed for light travelling through a medium, mainstream science tends to offer two different explanations for this, both being as wrong as each other. One is that a beam of light goes via some convoluted path through the medium while still managing to leave the same direction it entered. The other is that the light gets absorbed by each molecule it encounters on it's way and after a time delay is re-emitted in the same direction. These explanations are a desperate attempt to avoid having to accept that light actually has a reduced velocity in a medium.

What's really happening is that the electromagnetic fields induced by the oscillating charges within each individual atom/molecule in the medium are competing to entrain the light to move at a speed of c with respect to these charges. How this affects the velocity of light can be understood by breaking this oscillation down into vibration parallel to a ray of light and vibration transverse to it...

From the perspective of a charge vibrating parallel to a ray of light, this light can initially have a velocity that is less than or greater than c so the electromagnetic fields of each charge are effectively in a tug-of-war and cancel each other out overall — they encourage light to move at c with respect to the medium's average velocity. On the other hand, from the perspective of a charge vibrating transverse to a ray of light, the light can only ever be travelling faster than c initially and is therefore induced to travel slower than c with respect to the medium's average velocity. [btw, this is why the transverse doppler effect always produces a redshift]

The speed that light is decelerated to in the medium is the result of the competing EM forces induced by the parallel and transverse vibration. How much slower than c this is will depend on how fast the charges are oscillating and the density of them.
scowie

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Re: Speed of light determined by medium it travels through

~
lw1990,
(guessing that the 1990 is your DoB ?) Spend some time trying to understand electric induction,
then the transmission of light through different mediums will become more comprehensible.

Through water, a BEC, a~perfect vacuum (the aether), whatever; the principle is the same.
(You might try some Eric Dollard videos, once you've read a basic elect. eng. text)

seasmith

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Re: Speed of light determined by medium it travels through

yes it's my DoB
I know we have to use mysterious concepts to explain phenomenon on a high abstract level - like 'gravity' or 'magnetism' when we don't really know the cause/nature of these things, we just have lots of experimental data to see how they work in certain scenarios
that is why I try and stay away from the confusion of such concepts as much as possible, and just be interested by what can be plainly observed, then try to build from there

for example, they almost stop the speed of light in a bose-einstein-condensate, you can see the video of this on youtube, the light also decelerates going toward the center of the condensate and accelerates going away from the center.

so we know at least that something can affect the speed of light..

I'm proposing that it's the medium the light is traveling through, and I appreciate any counter arguments or whatever as any and all new data is a potential reinforcer or challenger to the idea, and those are both needed to test any idea

but I must admit that the way these confusing concepts are being thrown around sounds a lot like mainstream science throwing 'energy' or 'magnetism' around, which basically are occult things underlying 'everything' and 'you can't really understand until you read enough of our literature and come up with some nonverbal explanation yourself that you can't convey to others, but merely refer them to the literature'

transmission of light through different mediums seems simple enough - everything such as the earth, a bose-einstein-condensate, the sun/solar system, the galaxy, atoms, molecules, etc have cores at their center, with a somewhat finite boundary where they become rapidly more dense (such as the surface of the earth, or its atmosphere, or the visible boundary of the sun, or the core of the galaxy) and they have fields which extend far outside this, encompassing other core/field systems like planets, stars, etc in the case of the galaxy. When light moves through any of the fields generated by these core/field bodies, it slows down as it moves toward the core, and accelerates as it moves away from the core. This is the opposite of what happens with atoms/molecules in the form of a comet or rocket, for example, as it moves away from a core.

So, prediction being:
a comet moving away from the sun will decelerate
a comet moving toward the sun will accelerate
light moving away from the sun will accelerate
light moving toward the sun will decelerate

the 'sun' could be replaced by - earth, water molecule, BEC, etc

once the light or the comet reach the edge of the sun/BEC/water molecule/earth gravitational field, then it is no longer affected by that core/field body. So, if light exited the milky way and no other galaxies nearby, it would maintain its velocity at the time it escaped the galaxy (not accelerate or decelerate since it's no longer in a gradient field)

same for the comet (although the speed at which light/comet would be going would vary a lot, the deceleration/acceleration would stop for both comet and light)

however I will go into more detail into why I can't (and shouldn't) be able to understand scowie's explanation
he starts out with two mainstream ideas, which, however wrong they are, at least are understandable sentences/concepts
then he says
What's really happening is that the electromagnetic fields induced by the oscillating charges within each individual atom/molecule in the medium are competing to entrain the light to move at a speed of c with respect to these charges. How this affects the velocity of light can be understood by breaking this oscillation down into vibration parallel to a ray of light and vibration transverse to it...

electromagnetic fields induced by oscillating charges? that is like saying a god is blowing hot air onto the light beam to speed it up or slow it down, where in the world does this idea come from? all we know is that light accelerates away from the condensate and that it decelerates toward the condensate once it enters the condensate boundary. adding all this other mumbo jumbo is adding black holes/dark matter/multiple universe type fantasies to the experiment to make previous ideas/theories remain intact. I don't want any of that garbage in my awareness if I can help it.
lw1990

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Re: Speed of light determined by medium it travels through

yikes...

You do know that a BEC is only an artificial state of matter, and only produced in an artificial cavity, like a Magnetic 'trap', right ?
The title of this thread is pretty much correct, so don't get mesmerized by the video game called Utube.

If the electric induction of light through a medium is is a little too "mysterious" for you at this time, may i suggest starting by explaining something simpler for us, like maybe the Reflection of Light.

Later, you might tackle an Eric Dollard ebook, and then get back to me.
cheers
seasmith

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Re: Speed of light determined by medium it travels through

what does electric induction of light have to do with its speed though? It may all well be relevant to velocity or something, but its speed alone, I have not seen a shred of evidence for this, which is why I'm perplexed by it being relevant to the speed of light through a medium
also, what does reflection of light have to do with its speed

also lol at the artificial thing - anything artificial is built from natural elements, humans are natural products of nature and everything we build is just a natural derivitive (even if more complex), similar to animals producing a dirt path through a forest, if we build an artificial experiment it still models the current, 'natural' universe, the rules dont change just because a human built it - it just can become more exaggerated/complex.
lw1990

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