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This science fair projects about light and rainbows proves why a rainbow is made up of white light.
What do raindrops have to do with white light and rainbow?
Hypothesis: I think that white light is made up of many different colors.
Theory behind a
Click on image to enlarge.
The path of each differnt color is bent by a different amount. Violet light refracts more than blue light. Blue light refracts more than green light, and so on. As a beam of white light goes through a prism, the colors separate.
Materials: Compact Disc (CD) and Flashlight.
Observations: The CD surface separates white light into different colors.
Materials: Glass prism and flashlight
Observations: When light passes through the prism it refracts or bends often resulting in different colors.
How a R
When the light comes out of the water droplet, the sun's rays (white light) have now been split inot different colors.
In this way, each individual raindrop just behaves like a prism, refracting white sunlight into its seven component colors and a R a i n b o w is formed.
Conclusion: White light is really made up of many different colors.
The R a i n b o w we see is the result of many raindrops bending the sun rays (white light).
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