https://physlab-wiki.com/ 2026-04-26T19:21:16+00:00 https://physlab-wiki.com/ https://physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2024-06-06T18:32:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/diffraction-lab/diffraction-atomic-spectra?rev=1717713156&do=diff Diffraction Examples of Diffraction Below are some examples of diffraction as seen through a diffraction grating similar to the one you will use in this lab. These images nicely illustrate the beauty and art inherent in physics. We should never allow ourselves to become so immersed in the mathematical mechanics of solving physics problems that we fail to see the beauty in how it manifests itself in the world around us.$n\lambda = d\sin\theta_{max} (\mathrm{for\;n = 0,1,2,\dots)}$ text/html 2024-06-06T15:24:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/diffraction-lab/diffraction-theory?rev=1717701869&do=diff Refresher on Diffraction ---------- Interference and diffraction The term interference describes wave phenomena originating from a small number of point sources. (By a point source we mean a source of waves having linear dimensions small in comparison to the wavelength of the radiation.) The term $d$$\Delta r = r_2-r_1$$\Delta r = n\lambda$$\Delta r = d\sin\theta$$\theta_{max}$$n\lambda = d\sin\theta_{max} (\mathrm{for\;n = 0,1,2,\dots)}$$r = \left(n + \frac{1}{2}\right)\lambda$$\theta_{min}$… text/html 2026-04-23T12:10:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/diffraction-lab/marks-final-notes?rev=1776960620&do=diff Marks Final Notes - PHYS143 Diffraction text/html 2026-04-24T12:59:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/diffraction-lab/setup?rev=1777049953&do=diff PHYS143 Diffraction Setup For this lab there are two setups for each group of students. To date the lab sections for the PHYS140's have been capped at 15 students, meaning 5 stations are needed in total. Optical Rail The optical rail setup consists of the following for each station. text/html 2025-04-17T15:09:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/phylabs/lab_courses/phys-140-wiki-home/spring-experiments/diffraction-lab/start?rev=1744916983&do=diff Experiment Setup LASER SAFETY In this lab you will be working with low power lasers from ThorLabs. These are class II lasers which do not require special eye protection for use. They are in the same class as laser pointers. However they are not toys and must be handled with care. Please follow these rules to ensure a safe lab experience. Note that in future labs you will be working with more powerful lasers which are capable of doing serious damage to the eye, so it pays to treat all lase…