Class 2 side ch 20

Class 2 side ch 20 - • Sinusoidal waves – Source:...

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1/11/2012 1 PHY132 Introduction to Physics II Class 2 – Outline: Sinusoidal Waves Waves in 2 D and 3 D Spherical waves and plane wave Spherical waves and plane waves Power and Intensity of Waves The Doppler Effect Reminder • Practicals begin next week, Monday, January 16. • If you did not select a Practical section through ROSI, it is too late to do so using ROSI • Please see April Seeley in MP129 ASAP to get Please see April Seeley in MP129 ASAP to get enrolled in a section or to change your section • The first homework assignment is due by Friday, January 13 at 11:59 pm • The first pre-class quiz is due by Monday, January 16, at 10:00 am Last Time • Mechanical Waves: waves that require a medium • The wave travels through the medium. The wave speed is relative to that medium • Many waves: “transverse” or “longitudinal”
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Unformatted text preview: • Sinusoidal waves – Source: Simple Harmonic Motion – History: Period T – Snapshot: Wavelength Sinusoidal Waves The general equation for the displacement caused by a traveling sinusoidal wave is k = 2 π / λ is the wave number = 2 π f = 2 π /T Waves in Two and Three Dimensions Waves in Two and Three Dimensions 1/11/2012 2 Power and Intensity Power = rate at which energy is transferred Intensity = ratio of power to area The Index of Refraction • Light waves travel with speed c in a vacuum, but they slow down as they pass through transparent materials such as water or glass or even, to a very slight extent, air. • The speed of light in a material is characterized by the material ’ s index of refraction n , defined as...
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This note was uploaded on 02/28/2012 for the course PHYS 101 taught by Professor Dobzhansky during the Spring '12 term at University of Ottawa.

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Class 2 side ch 20 - • Sinusoidal waves – Source:...

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