Wednesday, April 24, 2013

Rainbows



The photo above is a photo I took of a rainbow outside of my house. I chose this picture because we are learning about light and refraction. A rainbow is formed when a light ray passes through a spherical water droplet and is reflected and refracted. This is like the car and the sand diagram. The light enters the water droplet at almost an angle and the different rays of color change speeds through the droplet. The light that enters is then reflected off the opposite side of the droplet and changes the direction of the light. When the light leaves the water droplet, the light ray is dispersed and the different color rays (ROYGBIV) are refracted down toward earth.


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