Colored Markers

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From: Marc Kossover (zeke_kossover@yahoo.com)
Date: Tue Nov 09 2004 - 09:40:47 PST 

Message-ID: <20041109174047.42398.qmail@web53409.mail.yahoo.com>
Date: Tue, 9 Nov 2004 09:40:47 -0800 (PST)
From: Marc Kossover <zeke_kossover@yahoo.com>
Subject: Colored Markers

Howdy-

Are you looking for a set of markers to do color
mixing? Look no farther!

The Bic MarkIt Permanent Markers (Bic's Sharpie
knock-off) works pretty well.

Their Hot Aqua makes a pretty good cyan, their Yellow
Blaze makes a great yellow, and their Fandango Pink is
a reasonable approximation of magenta. (I know pink
isn't magenta, but you haven't seen the marker yet.)

Deep Sea Blue, Rambunctious Red, and Forest Green make
pretty good primaries as well.

So, on white paper in white light they mix like
filters. For example, cyan and yellow make green. The
cyan layer only lets blue and green light through,
absorbing red (well, mostly). The yellow layer lets
red and green through while stopping blue. The result
is that only green can get though both, and so the
spot looks green. While yellow and blue actually make
black as no color can get though all the layers. Yes,
yellow and blue make black with these markers. No
kidding.

One hint: Always put the lighter color down first.
First, all of the inks have some reflective properties
independent of their filtering properties, especially
the lighter colored markers. Second, the solvent of
the second pen will pick up the pigment of the first.
This is less annoying if it is a dark pen picking up a
lighter pen's ink than the other way around.

Marc "Zeke" Kossover
The Jewish Community High School of the Bay

                
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