observes the object through a red filter, a
blue filter, and then a green one. Each filter
creates a separate image, containing
different information. These images are
then colored and combined in a process
similar to color separations used for printing
colored magazine pictures. Refer to the
Color Recognition and Colored Shadows
activities for more details on how color filters
work and how to combine colors.
For Further Research:
- Transmit and reconstruct the image on
the next page. This more advanced
picture uses six shades and smaller grid
squares.
- Examine printed copies of drawings made
with a computer art program. Notice how
the pictures are constructed of individual
points. Also notice how the size of the
points contributes to the fineness of detail
in the picture.
- Examine pictures drawn on a computer.
Use the magnifying tool to move to the
maximum magnification possible.
Compare the two views.
- Obtain the Astrophysics Division Slide
Set. Project the slides on a screen and
examine them closely for details on
picture construction. (See page 82.)
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