Up next in How to Do Fun Tech & Science Projects (52 videos)
Teach your children technical skills and science in fun ways with the tech and science projects in this Howcast video series.
You Will Need
- CD or DVD disc
- Cardboard box
- Black marker
- Toilet paper tube
- Utility knife
- Cellophane tape
- Aluminum tape or foil and glue
- 2 razor blades
- Black paint (optional)
Trace the viewing port location
Place the CD or DVD outside the box against one side about 1/2 inch from the bottom. Trace the small spindle hole in the middle with a black marker -- this is the height of the viewing port.
Finish the viewing port
Trace the toilet paper tube circle over the CD spindle hole, move the tube over 1/2 inch and trace another circle. Connect both circles to make an oval and cut out the shape using a utility knife.
Tape toilet paper tube
Tape the toilet paper tube halfway through the port at a 60 degree angle using plain cellophane tape and a protractor. Seal around the tube with aluminum tape or tin foil and glue to block out all light.
Cut out the light slit
Turn the box a quarter turn counterclockwise and use the CD to measure another hole. Cut out a small slit through the circle 1/2 inch wide and 2 inches tall.
Tape the razor blades together
Tape both razor blades together on the box so their sharp edges almost touch. Make a very small sliver of light through the slit cut in the box.
Tape the disc inside the box
Tape the CD or DVD inside the box opposite the razor blade slit with the rainbow or prism side out. Try to offset the CD from the box wall the same distance as your razor blades.
Seal the box completely using aluminum tape, or foil and glue. Peer through the toilet paper tube, point the razor blades at a light source, and gaze at the color spectrum of the world around you.