Wednesday, May 05, 2010

Siren

I'm listening to the siren from the fire station at the end of the street sound off.  The first time I heard it I was quite worried--then I discovered that it is tested at noon the first Wednesday of each month.  Since I'm not working Wednesday mornings I usually end up hearing it.  It lasts for a couple minutes and the Doppler effect is interesting as it wanes and waxes.

~Matt
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2 comments:

  1. Unknown05 May, 2010 12:50

    You actually wouldn't hear the Doppler effect unless either you or the siren was moving. {/physics ramble]

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  2. Matt05 May, 2010 12:54

    I realize that. The siren actually is moving I believe, I assume it rotates in a circle. So I hear the sound waning and waxing.

    I could be wrong and it is increasing and decreasing the volume, but it doesn't quite sound like that.

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