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Sound of a bell in a vacuum

This movie is part of the collection: Prelinger Archives

Producer: Coronet Instructional Films
Sponsor: N/A
Audio/Visual: Sd, B&W
Keywords: Perception: Sound

Creative Commons license: Public Domain

Wave Characteristics

St. Mary's Physics Online

SoundF_WL_Amplitude2.mp4

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

Clipart ETC

Frequency

 - Determined by
Source of Wave,

Not Medium

Cycle = (single vibration) 

Ex)

How many cycles between the dots?

3 Cycles

f = 2 Hertz (Hz)

Top View of a Wave
St. Mary's Physics Online

Sound Waves
David Kirby - U. of Calif.

Top view of a periodic wave
(Each line is a crest)

Crest
Physics 2000

Ex) A wave generator operating for
4 seconds produces the waves drawn below.

Top view of a periodic wave
(Each line is a crest)

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 

• Sound, frequency is pitch.

 

Source: Elroy M. Avery School Physics
(New York: Sheldon and Company, 1895) 247

Clipart ETC

 

• Light, frequency is color.

 

 

Frequency Range

 20 Hz - 20,000 Hz.

Did you know dogs are capable of hearing higher pitch sounds than humans?

The range of frequencies you
can hear changes with age. 

How old are you?

;

How to get rid of teenagers 

CBC Coverage by Moving Sound Technologies.mov

Ringtones the old folks can't hear

Ear Animation
2006 McGraw-Hill Higher Education

Enrichment

How the Ear Works

Producer: Bosse (Karl Kurt)
Sponsor: N/A
Audio/Visual: Sd, B&W
Keywords: Perception: Sound; Animation

Creative Commons license: Public Domain

How Sound Works

NASAconnect

Sound of a bell in a vacuum

| Onsite Version |

UC Irvine Physics and Astronomy Videos

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