Re: [Phys-l] images in eye

[chuck britton <britton@ncssm.edu>]

I hope that the red/green LED's have some sort of diffuser around/ 
over them.
The red and the green LED chips are not likely to produce the same  
intensity at the various spherical angles that people will be  
observing them.

I'm not doubting that the effect would still be seen with a well  
mixed red/green source - but I'd like to be reassured that this  
anisotropy is not important.

On May 27, 2008, at May 27(Tue) 11:45 , Marc Zeke Kossover wrote:

> --- John Clement <clement@hal-pc.org> wrote:
>
> > Incidentally there are 2 different possible
> > inherited color filters
> > for blue so others may not see color the same way if they
> > have the other
> > filter.
>
> The situation is way worse than that. The Exploratorium has
> a really cool exhibit that demonstrates (nay, proves) that
> the colors you see are not the same as the colors that
> other people see.
>
> Here's how the exhibit
> <http://www.exploratorium.edu/xref/exhibits/ 
> disagreeing_about_color.html>
> works:
>
> In the center is a yellow colored dot. Around the center
> dot is a circle of colored dots starting with green on the
> left and progressing through shades until it reaches red on
> the right.
	snip

> How does this work? The center dot is made by an
> incandescent bulb and is a black body yellow. Each
> individual dot in the circle is combination of red and
> green LED light in different proportions.