How Do We See Things

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How Do We See Things?
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Created by Heather Burley
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What can we see

• We are able so see a variety of things!
• sunlight bulbscandle flamesstarsfurniture
  bookspeoplefood

• Are these things all the same?
• There must be an active light emitter such as a
  light bulb.
• Since the light bulb is where the light
  originates, it is called the primary light
  source.
• There must also be an illuminated object which in
  our case will be a book.

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Source Physics 1800 Course Pack
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Whats the role of light and your eye?

• Your eye needs a source of light to see objects
  otherwise you are unable to see anything.
• Light from a source (such as a light bulb)
  bounces off an object (such as a book) and the
  light is redirected into your eye.

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Source Physics 1800 Course Pack
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STOP!
It is time for a quick quiz

• Q In what order does light travel in order for
  our eyes to see things?
• Click on one

• From your eye to the book to the light bulb
• From the light bulb to the book to your eye
• From the book to your eye to the light bulb
• From your eye to the book

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Wrong Answer

• Hint Our eyes are unable to see any object
  without a light source of some kind!

Back to Question Click Here
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Light bulbbook.eye
CORRECT!

• In order for our eye to see objects, light
  must travel from a light source (light bulb) to
  the object (book) and finally into your eye.

Last Slide
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This has been a presentation by Heather Burley
who is now a senior at WMU.EDT 3470 online
class!Summer 2006 semester!
Back to the Beginning

• Sources for this project include my Physics 1800
  Course Pack, Clip Art from Microsoft Office and
  my own photos.