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Quote from: Thebox on 29/09/2017 21:40:27Quote from: chiralSPO on 29/09/2017 20:00:24If air doesn't interact with light I have not said that air does not interact with light. I said air is transparent allows light to pass through it. So why would air scatter light when the light passes through it? I also question the word scattering which seems very opposite to a ''blue'' spectral wave-length which is a more compressed wave-length ?In this context, we use the word "scatter" to mean "change the direction of in random ways". It turns out (based on experimental observations, from which the theory was eventually derived) that blue light is more easily scattered than red light. So if you have a beam of light that is moving in a certain direction, after interaction with matter (of any kind) some of the light will be "scattered" such that it is no longer traveling in the same direction. The strength of this scattering effect depends on the wavelength of the light and many properties of the matter that is causing the scattering.This effect is very hard to see by experimenting with just pure air (you need a whole atmosphere's worth!)But it can be very effectively seen with smoke. If you happen to be a smoker or if you camp or BBQ often you may already have noticed this at some point, but smoke often appears to be kind of blueish (this is best observed when the sun is behind you and the smoke is in front of you, so you are seeing the light that scatters back at you). But when thick smoke is between you and the sun, it often takes on a red or brown sort of look to it. It's hard to show in pictures, but these might sorta work (both pictures show that the sunlight coming through the smoke looks red, and the surrounding smoke is blue/grey). It's best to check it out in person. red smoke.jpg (4.36 kB . 259x194 - viewed 8203 times) smoke-filtered sun.jpg (3.27 kB . 275x183 - viewed 8107 times)
Quote from: chiralSPO on 29/09/2017 20:00:24If air doesn't interact with light I have not said that air does not interact with light. I said air is transparent allows light to pass through it. So why would air scatter light when the light passes through it? I also question the word scattering which seems very opposite to a ''blue'' spectral wave-length which is a more compressed wave-length ?
If air doesn't interact with light
Quote from: Bored chemist on 29/09/2017 19:16:15Quote from: Thebox on 28/09/2017 22:53:42Then answer this, what happens to light according to present information when it spreads out more? You can either consider the inverse square law or a longer wavelength. Given that scattering doesn't follow the inverse square law, nor generally lead to a longer wavelength, why would I consider those?Because the word scattering would be quite the opposite of compress. For something to scatter, the distance expands between particles.
Quote from: Thebox on 28/09/2017 22:53:42Then answer this, what happens to light according to present information when it spreads out more? You can either consider the inverse square law or a longer wavelength. Given that scattering doesn't follow the inverse square law, nor generally lead to a longer wavelength, why would I consider those?
Then answer this, what happens to light according to present information when it spreads out more? You can either consider the inverse square law or a longer wavelength.
Ok, I still do not understand though how light travelling random ways can have a shorter wave-length i.e blue
I can't ''see'' in the mechanics involved how the light can compress enough to be blue?
Ok, I still do not understand though how light travelling random ways can have a shorter wave-length i.e blueI would expect a scattering to cause a wave length that was longer, i.e redI can't ''see'' in the mechanics involved how the light can compress enough to be blue? In your explaining of a scattering not once is there any mention of permeability?
Sunlight is composed of many wavelengths of light together.
I would like to ask a query to this statement. Do you mean white light is a mixture of frequencies ?
To me sunlight permeating through space is certainly not white light.
Quote from: Thebox on 03/10/2017 22:18:31I would like to ask a query to this statement. Do you mean white light is a mixture of frequencies ?Yes, it is.Every single experiment ever done on the subject shows this to be true, as do many commonplace observations.Quote from: Thebox on 03/10/2017 22:18:31To me sunlight permeating through space is certainly not white light. So, what you are saying is that you are right and that everyone else is wrong.Where did you get such a delusion of grandeur from?
Quite clearly you keep making things up
Quote from: Thebox on 04/10/2017 12:35:55 Quite clearly you keep making things up What do you think I have made up?The screen on which you are reading this emits (more or less) white light.What other colour could it be between the screen (an object) and your eyes?
Quote from: Bored chemist on 04/10/2017 12:48:37Quote from: Thebox on 04/10/2017 12:35:55 Quite clearly you keep making things up What do you think I have made up?The screen on which you are reading this emits (more or less) white light.What other colour could it be between the screen (an object) and your eyes?It isn't any colour between your eyes and object, it is clear in appearance, i.e transparentNow if you say clear or invisible light is a mixture of frequencies and can create variable wave-lengths, then you have the correct semantics and remove the confusion of white.
We can clearly observe that white light has a greater ''viscosity'
Quote from: Thebox on 04/10/2017 12:59:00Quote from: Bored chemist on 04/10/2017 12:48:37Quote from: Thebox on 04/10/2017 12:35:55 Quite clearly you keep making things up What do you think I have made up?The screen on which you are reading this emits (more or less) white light.What other colour could it be between the screen (an object) and your eyes?It isn't any colour between your eyes and object, it is clear in appearance, i.e transparentNow if you say clear or invisible light is a mixture of frequencies and can create variable wave-lengths, then you have the correct semantics and remove the confusion of white. OK, the first thing you need to do is understand that colour is (more or less) a property of the light itself. It depends on the wavelength (or more commonly) on the mix of wavelengths and their relative intensities.Your eyes can judge that colour, but only when he light actually reaches your eyes.Got that?Quote from: Thebox on 04/10/2017 13:04:49We can clearly observe that white light has a greater ''viscosity'That's just nonsense.Look up the meaning of the word "viscosity".Colloquially, it's to do with the "thickness" or oiliness of liquids.Scientifically it is to do with momentum transfer and velocity gradients.Neither of those can apply to light.You are making up the idea that it might.So, please stop making things up and, btw, please stop pretending that I'm the one who makes stuff up.
I'm not trolling you. I used the quote marks, because, as you point out- that's how English works.I didn't want you saying dross like "how thick is it? Is it 10mm thick?"The point is that light doesn't have a thickness in either use of the word."Secondly Colour is not a property of the ''light'' (electromagnetic radiation) itself. Colour is a property of light and substance interaction, without the interaction there is no colour period."Just plain wrong.If I point a red HeNe laser at stuff in a room with no other light source, the only colour I will see is red- because the laser only emits red light.It doesn't matter much what substance or object it interacts with the only thing I see is shades of red from bright, through dark to almost black..
Chaos theory is a branch of mathematics focused on the behavior of dynamical systems that are highly sensitive to initial conditions. 'Chaos' is an interdisciplinary theory stating that within the apparent randomness of chaotic complex systems, there are underlying patterns, constant feedback loops,
And you know very well you don't see a laser beam unless a medium is reflecting it creating visible light. No interaction no reaction.
Your eyes can judge that colour, but only when he light actually reaches your eyes.Got that?
What I am doing is science.
Yes we know that white light is a mixture of frequencies, but the very fact remains that we do not know what the light between point sources is made up of because we are stuck with white light
I ask you to move on from white light and discuss clear/invisible light properties.
Something that science seems to leave out.
I state that I think the light permeating between point sources that is clear/invisible in relative appearance is in a state of chaos.
What do you think of my speculative thinking?
Ignoring established science is not doing science.