Lecture4 - PHY102 1 Major Concepts in Physics Lecture 4...

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Unformatted text preview: PHY102 1 Major Concepts in Physics Lecture 4. Prof Simon Catterall Office 309 Physics, x 5978 [email protected] http://physics/courses/PHY102.08Spring PHY102 Today: Quantitative aspects of waves ¡ Review: basic properties of waves ¢ Examples ¡ Review: standing waves ¢ Examples ¡ Review: interference, Young’s double slits ¢ Examples PHY102 Basic Ideas ¡ Waves – matter when disturbed typically gives rise to waves – oscillations of particles of medium in time and space that transfer energy from place to place ¡ Several types: longitudinal (eg sound) and transverse (eg light) ¢ Propagating and stationary (standing waves) ¡ Examples: sound, light, water, seismic, strings, plates PHY102 Key formulae ¡ Time period T and frequency f=1/T ¡ Also, angular frequency ω = 2 π /T =2 π f ¡ Wavelength λ and wavenumber k= 2 π /λ ¡ Wave speed v=f λ = ω /k ¡ Amplitude A ¡ Wave function: y=Asin( ω t-kx) PHY102 Example: A transverse sinusoidal wave is represented by the following...
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Lecture4 - PHY102 1 Major Concepts in Physics Lecture 4...

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