I found a picture on this site :
http://sol.sci.uop.edu/~jfalward/refraction/refraction.html

More specific picture
http://sol.sci.uop.edu/jfalward/refraction/criticalanglefiverays.jpg.

I have the same outcome with my software, but can someone explain this? In
real world you see only 1 spectrum...

From:	redbelly
Subject:	Re: Can someone explain this?
Date:	11 Jan 2005 07:03:17 -0800

Fabiocco wrote:

> I found a picture on this site :
> http://sol.sci.uop.edu/~jfalward/refraction/refraction.html

> More specific picture
> http://sol.sci.uop.edu/jfalward/refraction/criticalanglefiverays.jpg

We need more information before your question can be answered.
The first link contains many pictures, which one are you referring to?
The second link does not work (for me at least), could you recheck that
the address is correct?

Mark

From:	Fabiocco
Subject:	Re: Can someone explain this?
Date:	Tue, 11 Jan 2005 15:06:12 GMT

"redbelly" wrote in news:1105453495.276287.48570
@f14g2000cwb.googlegroups.com:

> We need more information before your question can be answered.
> The first link contains many pictures, which one are you referring to?
> The second link does not work (for me at least), could you recheck that
> the address is correct?

The address to the picture is
http://sol.sci.uop.edu/~jfalward/refraction/criticalanglefiverays.jpg

I don't know why that '~' disappeared, but I apologize.

From:	redbelly
Subject:	Re: Can someone explain this?
Date:	11 Jan 2005 09:16:44 -0800

What aspect about the picture is confusing you?

Five separate beams are incident upon the prism, each at a different
location and angle. Each beam is partically reflected & partially
transmitted at each glass-air interface. Exception: at certain angles,
there is total-internal-reflection. The picture shows it all, quite
clearly.

There is no spectrum to see in the picture, as the light is
monochromatic. They are just illustrating reflection and refraction,
and not talking about spectra.
Again, there are five separate input beams, not just one.

From:	Pieter Kuiper
Subject:	Re: Can someone explain this?
Date:	Tue, 11 Jan 2005 15:59:38 GMT

Fabiocco wrote:

> I found a picture on this site :
> http://sol.sci.uop.edu/~jfalward/refraction/refraction.html
> http://sol.sci.uop.edu/~jfalward/refraction/criticalanglefiverays.jpg.
>
> I have the same outcome with my software, but can someone explain this? In
> real world you see only 1 spectrum...

It depends on the distance from the screen to the prism.

--
"Electrons damage the brain," said Farish. (Donna Tartt)

From:	Sam Goldwasser
Subject:	Re: Can someone explain this?
Date:	11 Jan 2005 12:19:49 -0500

Pieter Kuiper writes:

> Fabiocco wrote:
>
> > I found a picture on this site :
> > http://sol.sci.uop.edu/~jfalward/refraction/refraction.html
> > http://sol.sci.uop.edu/~jfalward/refraction/criticalanglefiverays.jpg.
> >
> > I have the same outcome with my software, but can someone explain this? In
> > real world you see only 1 spectrum...
>
> It depends on the distance from the screen to the prism.

Search on: "Total internal reflection".

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From:	Pieter Kuiper
Subject:	Re: Can someone explain this?
Date:	Tue, 11 Jan 2005 18:05:09 GMT

Sam Goldwasser wrote:

> Pieter Kuiper writes:
>
> > Fabiocco wrote:
> >
> > > I found a picture on this site :
> > > http://sol.sci.uop.edu/~jfalward/refraction/refraction.html
> > > http://sol.sci.uop.edu/~jfalward/refraction/criticalanglefiverays.jpg.
> > >
> > > I have the same outcome with my software, but can someone explain this?
> > > In
> > > real world you see only 1 spectrum...
> >
> > It depends on the distance from the screen to the prism.
>
> Search on: "Total internal reflection".

Of course, that is what the figure is meant to illustrate.

But as I understood the OPs question, he was wondering about the three
transmitted rays each giving a separate spectrum.

--
"Electrons damage the brain," said Farish. (Donna Tartt)

From:	Sam Goldwasser
Subject:	Re: Can someone explain this?
Date:	11 Jan 2005 19:22:13 -0500

Pieter Kuiper writes:

> Sam Goldwasser wrote:
>
> > Pieter Kuiper writes:
> >
> > > Fabiocco wrote:
> > >
> > > > I found a picture on this site :
> > > > http://sol.sci.uop.edu/~jfalward/refraction/refraction.html
> > > > http://sol.sci.uop.edu/~jfalward/refraction/criticalanglefiverays.jpg.
> > > >
> > > > I have the same outcome with my software, but can someone explain this?
> > > > In
> > > > real world you see only 1 spectrum...
> > >
> > > It depends on the distance from the screen to the prism.
> >
> > Search on: "Total internal reflection".
>
> Of course, that is what the figure is meant to illustrate.
>
> But as I understood the OPs question, he was wondering about the three
> transmitted rays each giving a separate spectrum.

They don't appear significantly different to me, just varying in intensity.

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From:	Fabiocco
Subject:	Re: Can someone explain this?
Date:	Wed, 12 Jan 2005 09:01:05 GMT

Pieter Kuiper wrote in
news:Pieter.Kuiper-50A144.19065011012005@newsc.telia.net:
> But as I understood the OPs question, he was wondering about the three
> transmitted rays each giving a separate spectrum.

You're right actually. I wonder why the rays doesn't interact when they
come out. If the rays are sent one by one, this normal, but if they are
sent 5 at one time I thought they would interact.
In real world I never saw 5 seperate rays exiting a prism (a bit based on
not seeing different spectra exiting, monochromatic light in real world is
not something you see :))

From:	Sam Goldwasser
Subject:	Re: Can someone explain this?
Date:	12 Jan 2005 15:16:17 -0500

Fabiocco writes:

> Pieter Kuiper wrote in
> news:Pieter.Kuiper-50A144.19065011012005@newsc.telia.net:
> > But as I understood the OPs question, he was wondering about the three
> > transmitted rays each giving a separate spectrum.
>
>
> You're right actually. I wonder why the rays doesn't interact when they
> come out. If the rays are sent one by one, this normal, but if they are
> sent 5 at one time I thought they would interact.
> In real world I never saw 5 seperate rays exiting a prism (a bit based on
> not seeing different spectra exiting, monochromatic light in real world is
> not something you see :))

Five separate rays entered, five separate rays exit. Photons do not
interact in a linear medium like glass or air (at least not until you
get to very high power densities).

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