🚀 go-pugleaf

In article <labh28dt456903pr8ktglq1du55em53hno@4ax.com>, 
jonk@infinitefactors.org says...
> 
> On Mon, 13 Aug 2012 04:52:24 -0700, Mark Borgerson
> <mborgerson@comcast.net> wrote:
> 
> >In article <34je285htmmfscg6643s4qqlqdfjbchhbs@4ax.com>, 
> >jonk@infinitefactors.org says...
> >> 
> >> On Sat, 11 Aug 2012 23:22:35 -0700, I wrote:
> >> 
<<SNIP>>
> 
> We already use the sun as a source for transmission methods
> in a small box. A fluorescent yellow highlighter dipped a few
> times into distilled water, kept still transparent clear so
> very dilute, produces a beautiful green, for example. It does
> require a strong light source to be striking, so that's why
> the sun.
> 

Another good experiment might be to make up a chlorophyll
solution---think spinach and rubbing alcohol in a blender,
followed by a paper towel filter. (the paper towel filter
will also produce quite a nice paper chromatogram under the
right circumstances.)

You will see some nice absorbtion spectra for the
chlorophyll and other pigments, you should also see a strong
fluorescence peak in the red when looking at right angles
to the sunlight.
> DVD-RW is 1350 lines/mm or spaced by 0.74�m. The yellow
> spectral doublet of mercury at 577nm and 579nm is very
> visible to the eye and a lot of the solar Fraunhofer lines
> are also clearly discernable. Which is way better than I'd
> expected from cheap DVDs when I started doing this.
> 
> Anyway, I will make some thoughts first and then maybe some
> attempts regarding the sun (in a few months time) and see
> where it takes me. I'll have to consider safety, consistency
> regardless of time of year, position of sun in sky, ... and
> work out a procedure students can achieve.
> 
> Thanks,
> Jon

Mark Borgerson