https://www.physlab-wiki.com/ 2026-04-19T16:11:21+00:00 https://www.physlab-wiki.com/ https://www.physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2026-04-10T11:25:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/wave-motion-lab/marks-final-notes?rev=1775834705&do=diff Marks Final Notes - Wave Motion Prior to Spring 2026 I had been setting out 5 stations, each with a sound tube apparatus and a spring or a string apparatus. This allowed students to do the whole lab at one station and avoided rotating among setups and the associated lab notebook issues. Students all worked on either the spring apparatus or the string, but not both because I felt that they were similar enough that there was nothing lost this way. text/html 2024-06-06T15:25:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/wave-motion-lab/review_of_waves?rev=1717701933&do=diff Theory of waves ---------- Traveling waves A wave is a disturbance (usually in some medium) which travels away from its source. Some familiar examples are sound, water, and string waves. A transverse wave is a wave in which the disturbance causes a momentary displacement in the medium in a direction $y_1 = y_m\sin (kx - \omega t)$$y_2 = y_m\sin (kx + \omega t)$$y = y_1 + y_2 = y_m\sin (kx - \omega t) + y_m\sin (kx + \omega t)$$\sin A + \sin B = 2 \sin \left(\dfrac{1}{2}(A+B)\right)\cos \left(… text/html 2026-04-09T13:29:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/wave-motion-lab/setup?rev=1775755772&do=diff Setup notes for PHYS143 Wave Motion lab. Most of the apparatus for the lab is in the NW corner cabinet of the island bench. Scopes and Function generators are located in the middle cabinet on the east wall. For the vibrating string apparatus I also set out a long length of the string for the students to use for determining the linear mass density. text/html 2026-04-06T14:35:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/wave-motion-lab/start?rev=1775500540&do=diff Experiment Setup Standing Waves - PHYS143 (2025) In this lab you will use the physics of standing waves and how waves propagate to make measurements of the speed of sound in air and the linear mass density $\rho$ of a vibrating string. You will also investigate the behavior of standing waves on the strings of a Ukulele. $y_1 = A\sin (kx - \omega t)$$A$$\omega = 2\pi f$$f$$k = 2\pi/\lambda$$\lambda$$v=\lambda f = \omega /k$$y_2 = A\sin (kx + \omega t)$$y = y_1 + y_2 = y = 2A\sin(kx)\cos(\omega …