Sunrise - Sunset

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 Code Number :   8A10.19?

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources.

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Condition :   Good  
Principle :   Earth Inclination and  Position on Earth
Area of Study :  Astronomy   
Equipment :   8" X 8" X 2" high block, 2 L bottle full of water, 1 or 2 large coins.

Procedure :   Place the coins behind the block and back away from the block until you can no longer see the coins.  Place the bottle horizontally in the middle of the block and the coins will reappear when looking through the water filled bottle.  This demonstration simulates the effects of refraction in the atmosphere which allows you to see sunrises before or sunsets after they actually occur.
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   References

Janice VanCleave,  "Riser,"  200 Gooey, Slippery, Slimy, Weird, & Fun Experiments, p. 9.



Mail Questions and Comments to:  Dale Stille