PHYS 158 Lecture 1: Week 1 - Introduction and Standing Waves
Document Summary
Office hour: mwf 10 am 11 am in henn 309a. Hasinoff"s rules for problem solving: read the question slowly and carefully, read . Reading quizzes monday 9 am and thursday 2 pm. Waves carry energy proportional to area squared. Intensity (power/unit are) decreases with distance proportional to 1/radius squared. When two or more waves overlap, the displacement of the medium at that point is the sum of the displacements due to each individual wave. Note: this principle also applies to light waves moving in a vacuum. Transverse standing waves on a string (2 fixed walls) At any point, the oscillations of two waves of. Slightly mismatched frequencies cause audible beats nearby frequencies f1 and f2 can be described as. = c + 3 = sin c + sin 3 = 2 cos where nopq = C 3 is much smaller than c or 3. This total wave has an oscillation frequency = changes slowly at a frequency.
