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EXPERIMENT 4
DID YOU KNOW ?
These primary colors are also used in
printing. The color model used here is
also known as the CMYK model, with
the letter standing for the various
colors, as follows:
C = cyan (bluish-green)
M = magenta (reddish-pink)
Y = yellow
The K stands for "key," and is used to
refer to the black portion.
Take a look at the pictures below to
see some of the many
ways that colors are
used.
Here's where things get
colorful ...
YOU WILL NEED
› Box of opaque (gouache) paints
› Brush
› Paper
› Water
› Paper towels
› Old clothes
› Clean, empty yogurt container
HERE'S HOW
1. For this experiment, it would be best to find a place that
can handle a little abuse, and wear old clothes.
2. Find the color yellow in your box of paints, and use your
brush to paint a yellow circle on the sheet of paper. You
will want to paint the subsequent colors while the
paints are still wet.
3. Wash out the brush and dip it in the blue paint. Paint a
blue circle next to the yellow one, but make sure it
overlaps the yellow one a little. Look at the color that is
created where the two circles overlap each other.
4. Again, wash the brush out well, take the red color, and
paint a red circle overlapping both the yellow and the
blue one. What new colors do you see in the areas
where the circles overlap?
5. Now, let's go! Assemble your own painting robot. You
will find the instructions on the following pages.
WHAT'S HAPPENING
You probably know what it's like when you have to
mix different paint colors because the one you
wanted wasn't in the paint box. You just did the
same thing here. The basic colors you started with
in this case are called primary colors. Just these
three are enough to mix together all the other
colors of the rainbow.
Vibration Technology
13
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