https://www.physlab-wiki.com/ 2026-04-18T17:25:37+00:00 https://www.physlab-wiki.com/ https://www.physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2025-04-14T13:11:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/interference-lab/interference_theory?rev=1744650706&do=diff Superposition Interference is simply a consequence of the principle of superposition. This means that at any point in space, the total amplitude of the disturbance due to two separate traveling waves is the sum, or superposition, of the amplitudes of the two separate waves.$y_1$$y_2$$x = 0$$y_1 = A\cos (\omega t + \varphi_1)$$y_2 = A\cos (\omega t + \varphi_2)$$\varphi_i$$y_T$$y_T = y_1 + y_2 = 2A\cos\left(\dfrac{\varphi_2-\varphi_1}{2}\right)\cos \left(\omega t + \dfrac{\varphi_2 + \varphi_1}{… text/html 2026-04-16T10:51:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/interference-lab/marks-final-notes?rev=1776351077&do=diff Marks Final Notes - PHYS143 Interference Lab This lab is run similar to the PHYS 123/133 version. Main differences are noted below. Speed Of Sound In Air Beats Microwave Interferometer text/html 2026-04-16T10:34:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/interference-lab/setup?rev=1776350055&do=diff Setup for PHYS143 Interference Lab This lab has three parts; speed of sound in air, beats, and microwave interferometer. Speed of sound in air - 3 Setups The setup as shown in the photo is pretty self explanatory. The speakers in their holders on rods are under the NW corner of the island bench with the Wave Motion and Sound stuff. text/html 2026-04-13T13:47:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/interference-lab/start?rev=1776102452&do=diff Interference (PHYS143) Spring 2025 This weeks lab is focused on using the phenomena of interference to do the following: * Use the sound tube apparatus from last week to design and carry out an new experiment to measure the speed of sound in the lab.