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Optics and Light—Color, continued
Combining Colored Light—
Demonstration Kit
By: The Flinn Staff
In this teacher-led demonstration, white light
from an overhead projector passes through
three holes in a plastic sheet. Each hole in
the plastic is covered with a transparent
sheet of colored acetate—one red, one green
and one blue. This allows red, green and blue
light to be projected as three separate circles onto a white wall or screen. With the
help of convex lenses, the three projected colors are refracted and overlap with one
another on the screen to create white light. Detailed Teacher Notes and a reproducible
student worksheet are provided.
Note: Requires an overhead projector.
See free video at flinnsci.com.
PHYSICS & PHYSICAL SCIENCE OPTICS AND LIGHT
Catalog No. Description Price/Each
AP7262 Combining Colored Light—Demonstration Kit $26.88
Flinn C-Spectra® Free Sample!
Would you like to see just how different
viewing the spectrum is when you use
a Flinn C-Spectra®? To get your free
sample, call 1-800-452-1261 or send
your request to: Free C-Spectra®, Flinn
Scientific, Inc., P.O. Box 219, Batavia,
Illinois 60510-0219.
For a complete description of our Flinn C-Spectra®, see page 184, Catalog
No. AP1714.
See free video at flinnsci.com.
Color Filters, Gelatin
This color filter set is ideal for work that requires “flexibility.”
The cellophane-type material can be curved around test
tubes or other objects for filtering effects. The filters are 10
cm squares. Each set includes one red, orange, green, blue
and yellow filter.
Catalog No. Description Price/Pkg. of 5
AP4786 Color Filters, Gelatin $9.24
OPTICS AND LIGHT—COLOR continued on next page.
Beyond the Rainbow—
Infrared and UV Light
Demonstration Kit
By: The Flinn Staff
Two “enlightening” demonstrations
reveal evidence for light energy beyond
the visible spectrum.
• The first demonstration using a
glass prism and four thermometers
simulates William Herschel’s 1800
discovery of infrared radiation. As
students observe and record temperature data from various parts of the spectrum,
they will be astonished to discover the greatest increase in temperature occurs
just beyond the red portion of the spectrum.
• The second demonstration follows Johann Ritter’s quest in 1801 to detect invisible
energy beyond the violet end of the spectrum by chemical means. The evidence is
clear as students observe photosensitive paper after it’s exposed to the spectrum
produced by passing sunlight through a glass prism.
Note: Refill packages of photosensitive paper are available separately. An 11" x 17"
x 9" cardboard box with a lid is needed for both demonstrations, but not included.
Catalog No. Description Price/Each
AP7284 Beyond the Rainbow—Infrared and UV Light
Demonstration Kit
FB1554 Sun Print Paper 13.92
Color Filters, Acrylic
This set of five transparent acrylic squares will be a
valuable resource during your discussions of color
theory. The filters are 48 mm squares and the set
includes red, orange, green, blue and yellow filters.
$37.09
Catalog No. Description Price/Pkg. of 5
AP4785 Color Filters, Acrylic $9.49
Color Filters, Paddles
Excellent color filters, at an affordable
price! Set includes six transparent
paddles colored red, orange, yellow,
green, blue and violet.
Catalog No. Description Price/Pkg. of 6
AP6423 Color Filters, Paddles $4.16
UV Filter Set
A common misconception is that ultraviolet light is
purple in color—it's actually invisible! Demonstrate
this fascinating concept visually with two plastic
filters. One prevents the passage of UV light and the
other allows it. When these filters are placed over a
special UV fluorescent ink and then under an ultraviolet
light, a message appears under the one of the filters, but not the other. You can
also use the yellow card to test windows, eye glasses, and safety glasses for their
ability to filter UV light. Set includes detailed instructions with activity suggestions,
yellow card printed with UV sensitive ink, and two plastic filters, 2.75" diameter.
Catalog No. Description Price/Each
AP7589 UV Filter Set $19.60
FULL KIT DESCRIPTIONS,
FREE RESOURCES AND
MORE AT FLINNSCI.COM
Light Sticks
All chemicals involved are safe, and the tubes can simply be
dis carded in the trash when exhausted. Each light stick will
remain lit for about 12 hours. Packaged in individual foil wrappers,
the sticks can be stored in this wrapper until ready for
use—up to four years. Each light stick measures 6" long x 5/8" in diameter.
Catalog No. Description Price/Each
AP1443 Light Stick, Green $3.48
AP2066 Light Stick, Red 3.43
AP2067 Light Stick, Blue 3.28
AP2068 Light Stick, Yellow 3.43
AP2069 Light Stick, Orange 3.28
Please specify your color choice.
Intermediate Spectrometer
with 30 mm Optics
Intermediate Spectrometer is an excellent instrument
designed for students to make precise measurements.
Full details at flinnsci.com.
Catalog No. Description Price/Each
AP8168 Intermediate Spectrometer with 30 mm Optics $1655.50
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