Doppler Effect Simulation


Doppler Effect Simulation written by Samuel Knutson, Dr. Melissa Hayes-Gehrke, and Dr. Alberto Bolatto in 2011-2012. We acknowledge support from a CAREER award by the National Science Foundation, grant AST-0955836, and from a Cottrell Scholar award by the Research Corporation for Science Advancement, grant 19968. We also thank Reiner "Tiles" Prokein for the cannon animation images, available at http://www.reinerstilesets.de/.



Using the Applet

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Frequently Asked Questions

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  1. Why won't the Applet load in my browser?

  2. The applet says sound is not working in my browser; what does this mean?

  3. What is plotted on the graphs?

  4. What is meant by the term "frequency"?

  5. How are the times on the graph related to the frequency of the cannon shooting and the frequency of the cannon balls hitting the target?

  6. How can I figure out the frequency of the cannon shooting or the ball hitting the target from the graphs?

  7. How does the frequency of the cannon shooting and the ball hitting the target change with motion?

  8. What is the general concept of the Doppler Effect?

  9. What do the terms "redshift" and "blueshift" mean?

  10. Shouldn't the blueshift get bigger and bigger as the target approaches the cannon?

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