Duke University Students:

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Duke University Students

• Evan Cull
• Scott McCain
• Mohan Shankar

• Andrew Portnoy
• Luis Garcia
• Cristina Fernandez

OSA Duke Student Chapter
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Light and Optics
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What is Light?

• Light is an electro-magnetic wave
• Electro -gt electricity
• Magnetic -gt magnets
• Lets us see

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Light is Fast!

• 186,282 miles per second
• 670,616,629 miles per hour

Sun
Earth
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Where can we get light?
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What is white light made of?

• White light is made from all the colors in the
  rainbow
• Look closely at a Television
• Made of Red, Green, and Blue dots

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How can we split white light into colors?
A Prism
Or A Grating
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Controlling light

• Reflecting with mirrors
• Bending with lenses (Refracting)
• Blocking, like a shadow in the sun

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Optics in Nature
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Why do we control light?

• Your eyes
• Eyeglasses and contact lenses
• Lenses for TV, movie, and photographic cameras
• Photocopiers and fax machines
• Binoculars and telescopes
• Microscopes and magnifiers

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More Uses

• Projectors (overhead, movie, slide, TV)
• CD players
• Supermarket product code laser scanners
• Weather and spy satellites
• Medical systems (to look inside the body)
• Solar energy systems

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Illusions
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Illusions
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Illusions
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Illusions
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Illusions