A personal journal about teaching the Bible and ancient Near Eastern history/theology/religion/archaeology to university students in New Orleans, and whatever else happens to be on my mind.
Wednesday, January 20, 2010
Doppler Effect and Environment
In class today the topic of the Doppler Effect came up, and I asked students to explain it for those unfamiliar. A very bright student said correctly that it's when a wave frequency is altered for someone who is in motion. He said an example is how the sound of a police car changes from a higher pitched sound as it approaches to a lower pitched sound when it drives away. I found that example fascinating, because in Nebraska schools I always heard it explained in relation to train whistles. I guess there are more police sirens than train whistles in New Orleans.
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1 comment:
Hi Mike
Interesting that the doppler effect came up. There's an old (but very good) article by Jim Deetz on the doppler effect and archaeology that you (and your students?) will enjoy. It's on JSTOR here:
http://www.jstor.org/pss/3629228
Best
Garth
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