Ok, I will try! Need to open bottle...any particular wine/quality? May need
bottle while I wait for dried up residue. Starting....
G.L. (Gary) Peterson,Ph.D
Psychology@SVSU
On Feb 1, 2013, at 2:18 PM, Marc Carter <marc.car...@bakeru.edu> wrote:
> Hi, all --
>
> Although this is not directly teaching-related, it will be the next time I
> teach color vision.
>
> I have dried-up wine residue in the bottom of a glass, left from the night
> before. It's purple.
>
> I put water in the glass to rinse it, and the water has a purple tint.
>
> I pour this into a white enamel sink. It's *blue*.
>
> The sink is as far as I can see not yellowish -- it really looks white.
>
> Any ideas on why this happens? Anyone care to try to replicate this and
> report back?
>
> Thanks,
>
> m
>
> --
> Marc Carter, PhD
> Associate Professor of Psychology
> Chair, Department of Behavioral and Health Sciences
> College of Arts & Sciences
> Baker University
> --
>
>
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