McGraw-Hill Science Return to Book List
Lightning
Grade 5
Science Magazine & World of Science
 
Matter, Topic 6: Matter and Energy
Cameras and Chemistry
Keyword: DARKROOM

Did You Know...
What do egg whites, salt, potato starch, and honey have in common? Each was used in the early days of photography to develop film!

 

A Beginner's Guide to Photography: Exposure

Learn more about how a camera uses light to make photographs. When you're finished, click Sim-Camat the bottom of the page. See for yourself how changing the f-stop and shutter speed changes a photograph.

Questions

  1. What does the f-stop setting control on a camera?

  2. What does the term "shutter speed" mean?

  3. What part of the human eye is like the aperture, or light opening, of a camera?

     

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Bob Miller's Light Walk

Check out the interesting black-and-white photographs from photographer Bob Miller. Then, learn how you can build your own pinhole cameraand take pictures with it! NOTE: The words on this page may be hard to read on your computer. If so, print the page first.

Questions

  1. What does Bob Miller mean when he says that light is information?

  2. When light breaks through a tree's leaves and hits the ground, why does it form a round image on the ground?

  3. What was the most interesting thing you learned from Bob Miller's Light Walk? Why?

     

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History of Photography

Here is a wonderful site on photography. Check out the gallery of very early photos, and pictures from the masters of photography. Remember what you learn at this site the next time you take pictures with your camera!

Questions

  1. Who made the first photograph on paper of a human figure? When was the photograph taken?

  2. Why do figures in the daguerreotype photos from the 1800s often appear stiff?

  3. Which photographs at the site did you like the best? Why?

     

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