Science in Focus: Shedding Light: Lights, Action, Camera

Shadow Time

Shadows cast by a 12 inch ruler in two different parts of the country at the same time of day. Both rulers were positioned to face north.

Note the positions of the rulers as well as the relative lengths of the shadow in comparison to the folder.

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Los Angeles, CA 9/9/99 12 pm PT (3 pm ET)

 

Cambridge, MA 9/9/99 3 pm ET (12 pm PT)

 
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Los Angeles, CA 9/9/99 3 pm PT (6 pm ET) Cambridge, MA 9/9/99 6pm ET (3 pm PT)
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Cambridge, MA 9/9/99 6pm ET (3 pm PT)

Note the long shadow.