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Title: Doppler Effect Arm
PIRA: 3B 40.10

Demonstrates: Sound frequency changes.
Description: A Sonalert siren swings around to show effect.
Instructions:
Items Used:

Notes: Start arm slowly then increase speed. Math Description: None.

Size: 15" h x 47" w. Condition: Good. Hazard: Arm can hit you.
Schematic: 3B 40.10 Tech Specs: None. Web Links: Video Created for Online Class
History:

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