http://physlab-wiki.com/ 2026-05-05T15:38:27+00:00 http://physlab-wiki.com/ http://physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2025-10-07T12:58:34+00:00 Anonymous (anonymous@undisclosed.example.com) http://physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/grading-intro-assignment?rev=1759856314&do=diff TA grading notes While we do want you to grade the first experiment on completeness, we'd also like you to give the students some feedback on what they've done to let them know what's being expected of them in the future. To that end, here's a (non-exhaustive) list of things to consider when looking at the assignments.$t'$$t'$$t'$ text/html 2025-10-08T11:40:21+00:00 Anonymous (anonymous@undisclosed.example.com) http://physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/introduction-to-experimental-physics-2025?rev=1759938021&do=diff Introduction to Experimental Physics (2025) Welcome to experimental physics! Our goal with this lab sequence is for you to gain practice doing experimental science. This is separate from the lecture portion of the course, where the goal is to understand the inter-related and systematic nature of physics, and how to use physical models to mathematically predict the behavior of systems. As such there will frequently be times when the content in lab is noticeably different from the content in lect… text/html 2024-10-21T11:17:10+00:00 Anonymous (anonymous@undisclosed.example.com) http://physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/least-squares-fitting?rev=1729523830&do=diff Least-squares fitting Fitting data to a model is a way to determine the best values for free parameters. In Part 1, you adjusted the values of $A$ and $B$ in your models until you had what looked to your eyes like the best match to the data. In this part, we will use a more rigorous method for determining the $N$$i$$(x_i, y_i \pm \delta y_i)$$f(x)$$f(x) = mx$$m$$m$$i$$\chi_i$$\chi_i \equiv \dfrac{f(x_i) - y_i}{\delta y_i}$$t^{\prime}$$y_i \pm \delta y_i$$f(x_i)$$t^{\prime}$$\chi^2 \equiv \sum_i…