Date: Thu, 9 Dec 2010 11:04:46 -
Author: Paul Doherty
Subject: Re: Chlorophyll fluorescence
Shine the green or violet laser through extra virgin olive oil.
The chlorophyll fluoresces red.
It's cool to look at the color change with the viewing angle using the =
green laser, in the forward direction the green scattering plus the red =
fluorescence is seen as yellow. To the side there is less scattering and =
more fluoresecnce so the beam appears red.
On Dec 9, 2010, at 10:45 AM, Thomas Senior wrote:
> I was experimenting on my cat last night, CAREFULLY using red, green, =
and blue laser pointers to try to determine which she preferred. The =
results were inconclusive, as she desperately wanted to attack any =
color. Anyway, when the blue laser hit a green leaf of a house plant, =
i noticed the dot turned RED. It was pretty cool. Perhaps some of you =
would verify the observation. There is a demo where you grind up =
spinach and make a green solution of chlorophyll and a bright white =
light will fluoresce as it passes through. This blue laser on a green =
leaf may be easier.