http://www.physlab-wiki.com/ 2026-04-18T15:02:09+00:00 http://www.physlab-wiki.com/ http://www.physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2026-03-06T13:20:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/precision-measurements-lab/marks-final-notes?rev=1772821212&do=diff Marks notes on the precision measurements lab. Marks Final Notes - Precision Measurements Pts 1 & 2 This lab is similar to the 121/131 version, but has some significant differences. Day 1 * The paper drop is likely the same as the other labs. I always tell the TA's to emphasize to the students that dropping pieces of paper is an EXERCISE. The point of the exercise is to establish the t' test as a method for comparing measured values. They are NOT doing an experiment. This is basically … text/html 2024-09-13T11:49:31+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/precision-measurements-lab/plotting-and-fitting-data?rev=1726242571&do=diff Plotting and fitting data When you make a comparison between a measured number $a \pm \delta a$ and prediction $b$, you can perform a $t^{\prime}$ test to see whether your measured value agrees with that prediction as $t^{\prime} = \dfrac{a-b}{\delta a}$, where, as discussed in past weeks... * ...$\lvert t' \rvert \leq 1$ is agreement$1 < \lvert t' \rvert < 3$$\lvert t' \rvert \geq 3$$T = 2\pi \cdot \sqrt{\frac{l}{g}}$$l$$A$$B$$N$$i$$(x_i, y_i \pm \delta y_i)$$f(x)$$f(x) = mx$$m$$m$$i$$\ch… text/html 2025-10-24T13:20:24+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/precision-measurements-lab/precision-measurements-and-model-testing_part-2-2025-missed?rev=1761326424&do=diff Comparison of Data to Models (PHYS141) - Fire Alarm Makeup Assignment In Part 1, you built a pendulum and worked on refining the precision of your method for timing its period. You used a metric of being able to distinguish between two models where the difference between them is small as a way to define how precise your technique needed to be. $T$$L$$g$$T = 2\pi\sqrt{\frac{L}{g}}$$t^{\prime}$ text/html 2025-10-20T10:25:11+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/precision-measurements-lab/precision-measurements-and-model-testing_part-2-2025?rev=1760970311&do=diff Experiment Setup Comparison of Data to Models (PHYS141) - 2025 In Part 1, you built a pendulum and worked on refining the precision of your method for timing its period. You used a metric of being able to distinguish between two models where the difference between them is small as a way to define how precise your technique needed to be. $T$$L$$g$$T = 2\pi\sqrt{\frac{L}{g}}$$T$$t^{\prime}$ text/html 2025-09-10T13:50:03+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/precision-measurements-lab/setup?rev=1757526603&do=diff Setup page for day 1 of precision measurements lab. * Envelopes containing paper squares of the same size. Two different size squares, enough to give half the groups in a section one size and the other half the other size. Pendula building materials text/html 2025-10-15T10:30:49+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/fall-experiments/precision-measurements-lab/start?rev=1760538649&do=diff Experiment Setup Student Code Of Conduct There are certain expectations which the department of physics holds regarding your conduct in the instructional labs. These expectations relate to Safety, Etiquette, Professionalism and Ethics. Your TA will review these expectations with you at the beginning of your lab session. Please note, that behavior which falls in the Unacceptable category can result in your removal from the lab. These types of behavior do happen in the lab every year, so ple…