What do all waves have in common?

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Unit IV - Wave Phenomena

 

I. Introduction to Waves

 

Speed

a) V= fl

b) When a wave changes speed, its wavelength changes not its frequency

 

c) Loudness and brightness is determined by the amplitude of the wave

 

Wave Speed Rope

 v = (FT /µ)1/2

µ = mass/Length

FT - Tension (N)

 

Speed depends on medium

Sound travels faster in solids, wavelength changes f doesn't

v = 340 m/s (Sound)

 

p. 302)  1,2

 

 

 

Ex) sound, water waves, light, microwaves, heat rays

A. Waves and Energy


1. Waves transfer energy from one place to another with no transfer of mass

 

2. Waves can be produced in two ways:

a. Vibration of particles

(requires a medium for transfer)

(mechanical wave)

 

SoundF_WL_Amp.mp4

Sound Waves And Their Sources

This movie is part of the collection: Prelinger Archives

Production Company: ERPI Classroom Films, Inc. Distributed by Encyclopedia Britannica
Audio/Visual: sound, B&W
Creative Commons license: Public Domain 

 

 

ex) sound, water wave, spring wave

 

 

Splash of a Water Drop
N. Carolina School of Science and Mathematics

 

 

 

 

b. Small changes in the strength of an electromagnetic field

(requires no medium for transfer)

 

ex) light, microwaves, x-rays

 

 

 

3d  Electromagnetic Wave # 1
David M. Harrison

3d  Electromagnetic Wave # 2
David M. Harrison

 

 


Radiology Centennial, Inc
copyrighted in 1993

 

How the human ear works - Biswajeet - India

Onsite  Version

 

 

 

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