ƒeƒLƒXƒg ƒ{ƒbƒNƒX:

MATERIALS:

· Polarizer (2 sheets)

· CD Case (with transparent plastic front cover)

· Cellophane Tape (Sticky tape)

· Laptop (or Computer)

PROCEDURE:
ƒeƒLƒXƒg ƒ{ƒbƒNƒX: SCIENCE CONCEPT ƒeƒLƒXƒg ƒ{ƒbƒNƒX: Why can we see colors in the experiment when the polarizing film is present? Light is consists of different colors. These colors changes their speed when passes through a certain medium causes them to bend (refract). It became more slowly when it passes through a polarizer. The colors that we see are the result of refraction of the polarized light. For more information and explanation about this, I highly suggest reading the following link: http://www.lhup.edu/~dsimanek/14/polaroid.htm and http://www.exploratorium.edu/snacks/polarized_mosaic/index.html.

Taking it further:

1. Use other light source such as flashlight in doing the experiment instead of computer.

2. Combine three or more polarizer and experiment on it by rotating each polarizer in different angle.

Art in Polarizer

1. Open the CD case and remove the clear plastic cover of the CD case.

2. Stick the cellophane tape on the plastic cover of the CD case as shown in the picture or your desired pattern.

3. Place the polarizing sheet on top of the plastic board and hold in front of the computer. See the pattern created. Try to remove the polarizing film, can you see any color?

4. Rotate the polarizing film and see the difference in colors. (Donft rotate the CD case).

5. Insert the other polarizing film between the computer and the CD case cover in horizontal position. Observe the difference in colors. Try rotating the second film.

6. This time hold the transparent CD cover with the polarizing film on top in any bright place. Can you see any color? Now, hold another polarizing film under the CD case so that they are both in horizontal position. Then try to rotate the second polarizing film until it reaches the vertical position. Is there difference in color? Did you notice the black portion in the polarizing film?

ALSO TRY THESE
ƒeƒLƒXƒg ƒ{ƒbƒNƒX: EXPERIMENT LISTS PHYSICS Balancing a Dragonfly Does Air Takes Up Space? Improvised Battery (Option 1) Improvised Battery (Option 2) Improvised Battery (Option 3) Tornado in the Bottle Diver Surface Tension and Air Pressure Aluminum Wrap Railway Light to Sound Magnetic field in 3D Simple Kaleidoscope Art in Polarizer Simple Spectroscope Electrostatic Motor Paper Earphone CHEMISTRY Vegetable/Fruit Charcoal Red Cabbage Extract (Identifying Acidity of a Liquid) Alkalinity of a Liquid Crayon Making Hand Printing using Soap Testing Raindrop Acidity using Red Sweet Potato Powder Magic! (Water doesnft fall?) BIOLOGY 1. Leaves Puzzle ACTIVITIES Fossil Hunting Gold Sieving Smelting Steel Observing Classes Attending Trainings ƒeƒLƒXƒg ƒ{ƒbƒNƒX: VOCABULARY Polarization – the alignment of the transverse electric vibrations of electromagnetic radiation. Refraction – is the bending of light due to the change of speed of light when it passes from one medium to another. ŠpŠΫŽlŠpŒ`: HOME