Narrated Lesson 


Resonance Review

UC Irvine

School blocks YouTube? Download the file below.



1st, 2nd, 3rd Harmonic
 (B. Barrett)


Fill In The Blank Notes


IV. Light (electromagnetic waves)


A. Speed



1.  3 x 108 m/s = c (in vacuum)

(fastest speed in universe)

In air v ≈ 3 x 108 m/s



Did you know that
 light can travel
 about 7.5 times around the world
 in 1 second!


v = fλ


c = fλ 


3 x 108 m/s = fλ


Divide both sides by λ



f = c/λ


Frequency, Wavelength















Ex) What is the wavelength of light with a frequency of 7.69 x 1014 Hz in a vacuum?


c = fλ


3 x 108 m/s = 7.69 x 1014  Hz λ





λ = 4 x 10-7 m




2. Speed of light depends on the medium








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