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Sound of a bell in a vacuum
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Prelinger
Archives Creative Commons license: Public Domain
School blocks YouTube? - Sound_in_a_Vacuum.mp4
St. Mary's Physics Online
This movie is part of the collection:
Prelinger Archives School blocks YouTube? Use link below.
What is this speaker component called?
What kinds of waves does it produce? High or low frequency?
Woofer, Outputs low frequency waves
II. Characteristics of Periodic Waves
A. Frequency(f) = #vibrations/sec
= # Cycles/sec
= Hertz (Hz)
Source: Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 202
Cycle = (single vibration)
Ex)
How many cycles between the dots?
3 Cycles
f = 2 Hertz (Hz)
Top View of a Wave
Sound Waves
Top view of a periodic wave
Crest
Review - Longitudinal or Transverse?
Ex) A wave generator operating for
Top view of a periodic wave
How many waves are drawn between A and B? (Be careful!!)
What is the frequency of this periodic wave train?
8 cycles
f = 8 cycles/4 sec
f = 2 cycles/sec
Human Ear:
Frequency Range
20 Hz - 20,000 Hz.
The range of frequencies you How old are you? ;
How to get rid of teenagers
School blocks YouTube? Download link below. CBC - Moving Sound Technologies.mov
Ringtones the old folks can't hear
2006 McGraw-Hill Higher Education
Enrichment
How the Ear Works
Producer: Bosse (Karl Kurt) Creative Commons license: Public Domain
How Sound Works
Sound of a bell in a vacuum | Onsite Version | UC Irvine Physics and Astronomy Videos
©Tony
Mangiacapre., - All Rights Reserved
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