PHYS 132 Lecture Notes - Lecture 3: Refraction, Diffraction, Wave Equation
14 Oct 2016
School
Department
Course
Professor
Document Summary
From n to s, density = strength (intensity) direction of lines = direction of compass needle. Radio wave: electromagnetic wave speed = 3. 00 x 108 m/s. Speed = 331 m/s (stp) 340 m/s (room temp) amplitude = loudness (volume) frequency = pitch energy amplitude. Speeds up when going from air to water can"t be polarized. Speed = c = 3. 00 x 108 m/s (vacuu. Amplitude brightness (intensity) frequency energy (e =hf) down when going from air to water wavelength, low frequency blue: In phase: a, e, i out of phase by. 1800 or /2: a, c hard reflection: out of phase. Period (t): seconds/cycle frequency (f): cycles/second wave equation: v = f . Control: speed - you can only change the speed of the wave by changing the properties of the medium) Control: frequency stays the same, so does period and phase. Refraction: changing direction when changing speed when crossing a boundary.
