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Lincoln, James; Barrueto-Cabello, Roberto – Physics Teacher, 2021
X-rays are such an important and familiar part of the electromagnetic spectrum, but is there a way to safely bring x-rays into your lecture? The demo team at the University of California at Berkeley seems to have managed this. They have an x-ray safe box that they use to produce a live x-ray image on a fluorescent screen. In this article, we…
Descriptors: Visual Aids, Radiology, Teaching Methods, College Science
Logiurato, Fabrizio; Gratton, Luigi; Oss, Stefano – Physics Teacher, 2020
Crystallography is a fascinating subject and an argument of great importance in the study of structure of matter and fundamental physics. Moreover, many characteristics of crystals, as well as other organic and inorganic substances, are analyzed with x-ray diffraction. In order to introduce at a basic level the above mentioned subjects, and also…
Descriptors: Science Instruction, Science Experiments, Light, Physics
Ekkens, Tom – Physics Teacher, 2022
In many introductory physics classes, diffraction of light is introduced first, then more advanced diffraction topics such as x-ray diffraction, Bragg's law, and crystallography are covered. Since using x-rays raises safety concerns and atomic spacing in a crystal is not easy to change, microwaves with macroscopic crystals have been used to study…
Descriptors: Data Collection, Physics, Science Education, Introductory Courses
Zietz, Otto; Mylott, Elliot; Widenhorn, Ralf – Physics Teacher, 2015
Planar x-ray imaging is a ubiquitous diagnostic tool and is routinely performed to diagnose conditions as varied as bone fractures and pneumonia. The underlying principle is that the varying attenuation coefficients of air, water, tissue, bone, or metal implants within the body result in non-uniform transmission of x-ray radiation. Through the…
Descriptors: Radiation, Radiology, Clinical Diagnosis, Scientific Principles
Feller, Steve; Giri, Sandeep; Zakrasek, Nicholas; Affatigato, Mario – Physics Teacher, 2014
In a usual modern physics class the Compton effect is used as the pedagogical model for introducing relativity into quantum effects. The shift in photon wavelengths is usually introduced and derived using special relativity. Indeed, this works well for explaining the effect. However, in the senior author's class one of the student coauthors…
Descriptors: Scientific Concepts, Nuclear Physics, Kinetics, Equations (Mathematics)