Lasers, Lenses, and Diffraction Gratings

	Solar Cell Price: $2.86 Quantity in Basket: none
Tiny Silicon Solar Cell For the laser communicator, or for powering the three penny radio. (You will want three for the radio.) This tiny solar cell is 2 centimeters on a side. They can be soldered, but we find it easiest to use transparent tape to stick wires onto the cell. This makes a good sample for Silicon in your collection of samples for the Periodic Table of the Elements.
	Three Tiny Solar Cells Price: $6.38 Quantity in Basket: none
Three tiny solar cells, each 2 centimeters square. These are enough to power the Three Penny Radio.
	Ten Tiny Solar Cells Price: $16.94 Quantity in Basket: none
Sometimes you just want more power.
	Fresnel Lens Page Magnifier Price: $7.41 Quantity in Basket: none
For the Solar Powered Marshmallow Roaster project: This Fresnel lens is 10 inches by 7 inches, with a focal length a little over 10 inches. It concentrates the sun's energy down to a fine point, generating extremely high temperatures. It can also be used to magnify the pages of a book to make reading easier.
	Rainbow Glasses Price: $2.87 Quantity in Basket: none
For the spectroscope project, or just for fun. These glasses turn every light and sparkle into a shower of rainbows. Use them to make a spectroscope, or just use them to amuse the kids.
	Tube of 50 Light Sticks Price: $12.64 Quantity in Basket: none
A tube of 50 chemoluminescent (glow in the dark) bracelets, each one 8 inches long, in 5 colors. These can be connected together to make headbands, necklaces, belts, etc. The ends of the tube are special connectors to make a ball or cage that glows at night. Sticks glow for 6 hours, except for green, which glows much longer. These sell at fund raisers, dances, and parties for $1 to $2 each.
	Four Hologram Laser Pointer Price: $11.73 Quantity in Basket: none
This laser pointer comes with 4 holograms that screw onto the head of the laser to make patterns on the wall. The laser also comes with batteries and a keychain. This laser works very well for the Laser Communicator project.
	Laser Voice Transmitter Kit Price: $24.96 Quantity in Basket: none
Everything you need to transmit your voice over a laser beam. The laser, the audio transformer, the bicolor LED, the phono plug, the battery holder, even two test leads. Goes together in minutes. Matching receiver sold separately.
	Laser Receiver Kit Price: $7.13 Quantity in Basket: none
All you need to make the receiver for the laser communicator. No soldering required -- just attach the wires to the solar cell with ordinary transparent tape. One Tiny Silicon Solar Cell One Piezoelectric Earphone
	Free-Space Laser Communicator Kit Price: $23.48 Quantity in Basket: none
The parts needed to build the Free Space Laser Communicator project. Use your computer to send Morse Code with a laser beam. Use the Laser Receiver bundle to receive the signals.
	Diffraction Grating Film Price: $3.16 Quantity in Basket: none
High efficiency holographic diffraction grating film. This is the good stuff! Great for making spectrographs, or taking photos with rainbows around every bright spot in the image. A six inch square of it, so the whole class can make spectrographs. With this film, you can see the bright line spectra of gases like Neon in your collection of the Periodic Table of the Elements.
	Two Polarizers in slide holders Price: $2.82 Quantity in Basket: none
Polarizing film in a convenient cardboard holder like a 35 mm slide. Great for making the Polariscope, or just to play around with. You get a pair of them, because they're more fun that way.
	Eclipse Glasses Price: $2.84 Quantity in Basket: none
Eclipse glasses for viewing the sun. Watch the ocassional eclipse, or observe the much more common subspots. With these on, you won't see anything but the sun. They are very dark. Be really cool, and wear them at night.
	Wallet sized magnifier Price: $1.41 Quantity in Basket: none
A magnifier that fits neatly in your wallet. Magnifies 4x, or use it to start a fire in an emergency. Flat Fresnel lens is the size of a credit card, and comes with a thin protective case. A magnifier is a very handy thing to always have available.
	Ultraviolet Invisible Ink Kit Price: $19.32 Quantity in Basket: none
Ultraviolet LED, two batteries, invisible ink pen, and three small vials of invisible ink (red, yellow, and blue).
	Kryptonite Price: $4.17 Quantity in Basket: none
Kryptonite is the longest lasting phosphorescent material available. It glows all night (over 12 hours) after charging in the sun for only an hour or two. These tiny vials (about an inch high and half an inch in diameter) contain enough Kryptonite to read maps at night, or books under the covers. No evil genius should be without a protective vial of Kryptonite! Keep one of these in your pocket, and Superman will keep his big "S" out of your business! This makes a good sample for Strontium, Europium, or Dysprosium in your collection of samples for the Periodic Table of the Elements.