Light and Color

What is light? (baby don’t hurt me, don’t hurt me…no more!)

L i g h t a n d C o lo r ,[object Object],[object Object],[object Object],[object Object]

Where does light come from? ,[object Object],[object Object],[object Object]

It All Starts With Atoms ,[object Object],Like the planets in the solar system, electrons stay in the same orbit, unless…

Electrons Change Orbits ,[object Object],[object Object],[object Object],[object Object],[object Object]

Color of light ,[object Object],[object Object],[object Object],[object Object]

With all the colors together, you get white light!

Light is Weird It has a dual personality… Sometimes, it acts like a particle Sometimes, it acts like a wave

Light as a particle ,[object Object],[object Object],[object Object],[object Object]

Light as a w A v E ,[object Object],[object Object],[object Object],[object Object],[object Object]

Duality of Light ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Speed of light ,[object Object],[object Object],[object Object],[object Object]

Does light bend? Total Lunar Eclipse – February 20, 2008 Picture courtesy of The Daily Herald We see the moon because it reflects the sun’s light It takes 1 second for light reflected off the moon to reach the earth. During this lunar eclipse the moon looks red because sunlight bends around the earth and blue is filtered out.

Light interacting with matter ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Transmitted: The waves can pass through the object Absorbed: The waves can be absorbed by the object. Reflected: The waves can be reflected off the object. Scattered: The waves can be scattered off the object. Refracted: The waves can be redirected through the object.

Light transmission and color ,[object Object],[object Object],[object Object]

Reflection and color ,[object Object],[object Object],[object Object],[object Object],[object Object]

Absorption and color ,[object Object],[object Object],[object Object],[object Object]

Using Light to Study the Stars ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Two pictures of the Ring Nebula. Infrared light Visible light

Light and Color

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Light and Color