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Unit 9: Light Page 4

glass). Pick one of these to get Lasers
as an extra, or get all 4: 50mm,
150mm, 300mm, 500mm) · Red laser pointer (NOT GREEN!)
…OR… instead of buying lenses, · Small mirrors (mosaic mirrors
simply use eyeglasses and are cheapest)
magnifiers that you already
have around the house. · 3 large paper clips
· 3 brass fasteners
· Optional: if you want to make
the Newtonian telescope, then · 5 index cards
pick up a concave mirror AND a
· 2 pins
small mirror (like a mosiac
mirror from the craft store, or · 2 razor blades
mirror from a compact). · 4 clothespins
· Diffraction grating (you can use · Scissors, tape
an old CD in a pinch)
· White wall (or white paper stuck
· Sheet of mylar (5” x 8” or to the wall)
larger) and cardboard OR use
three rectangular mirrors · PLUS materials from Light
approx. 8” x 1” Waves 1 & 2

· Scissors, tape

· Optional: wooden clothespins For Grades 9-12:
(about 4)
Laser Light Show
· Optional: red, green, and blue
colored light sticks (Make sure · Red laser pointer (RS #63-
the light inside the red stick 1064)
really glows RED, not the usual · 2 3VDC motors (RS #273-223)
green liquid enclosed in a red-
colored tube.) · 2 gears** or corks (you’ll need
a solid way to attach the mirror
· For the last few items on this
to the motor shaft tip)
list, you can select from either
group: · 2 1” round mirrors (use mosaic
mirrors)
Group A: Three flashlights,
three colors of nail polish · 2 DPDT switches with center off
(red, green, and blue), clear (RS #275-1533)
tape (or plastic wrap) OR… · 20 alligator clip leads (RS #278-

Group B: Three ‘party bulb’ 1157) OR insulated wire if you
lights (green, blue, and red already know how to solder
colored incandescent light · 2 AA battery packs with 4 AA’s
bulbs) in clip-on lamps.
(RS #270-408)

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