Re: How many photons in one airy disc?


Chris L Peterson wrote:
> On Sun, 29 Jan 2006 17:48:43 -0700, Jürgen Appel
> <jappel@xxxxxxxxxxxxxxx> wrote:
>
> >What you probably mean is, that a photon does not have to be localized.
>
> I agree with that, but it isn't what I meant, which was that there is no
> such thing as a "ray" consisting of a stream of photons, because no two
> photons will be in exactly the same path. I suppose you could create
> some definition of ray that included a non-zero width (radius), and the
> resulting finite volume could be seen as containing a stream of photons.
> But I can't think of any particularly useful reason for doing that.
>
> My sense was that the OP was viewing a ray as if it were some sort of
> physical entity.
>
> _________________________________________________
>
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com

Maybe it's this.

The photons in one light ray has the same angle. They converge
into a cone ending as airy disc. So an airy disc has all the photons
in the parallel rays converging into it. Disagree? It has to do with
angle. Now in a second ray of light, the photons path has another
angle This is why the airy disc of two light ray can be beside
each other.

jayz

.

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