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…

This Focus On uses data from the Association of American Medical Colleges (AAMC) and the Law School Admission Council (LSAC) to showcase that, as a group, recipients of physics bachelor's degrees tend to do well on two prominent standardized tests for medical school and law school admission. Although only a small percent of the physics bachelor's…

Five types of affective supports were designed to induce an appropriate emotional regulation strategy in players of an educational video game. These supports were based on the emotional regulation strategies of situation selection, situation modification, attentional deployment, cognitive change, and response modulation. A series of qualitative…

Five types of affective supports were designed to induce an appropriate emotional regulation strategy in players of an educational video game. These supports were based on the emotional regulation strategies of situation selection,situation modification, attentional deployment, cognitive change, and response modulation. A series of qualitative…

The purpose of this publication is to bring attention to some physics problems whose answers seem to be paradoxical and, at first glance, do not agree with a limiting case check. Solving a problem on the motion of a system consisting of two masses and a spring, it is natural to examine the answer by considering a case when a spring constant is…

Measurement instruments of physics, especially those dedicated as teaching aids in physics classroom are improving. These measuring instruments are not only used for measurement purposes, but also to apply theoretical concept into the real world, thus making it easier for students to comprehend. Therefore, this study aims to design, construct, and…

Purpose: The purpose of this study was to evaluate the effects of nonmodal phonation on estimates of subglottal pressure (Ps) derived from the magnitude of a neck-surface accelerometer (ACC) signal and to confirm previous findings regarding the impact of vowel contexts and pitch levels in a larger cohort of participants. Method: Twenty-six vocally…

The Phantom Bouquet is a venerable lecture demonstration that does a fine job of showing how a concave spherical mirror can form a real, inverted image. In the original demonstration, a brightly illuminated artificial rose is hung by its stem in front of a concave spherical mirror. The distance from the reflecting surface to the rose is somewhat…

Thomas Young (1773-1829) is best known in the physics community for his double-slit experiment demonstrating the wave property of light and for his work on the tensile properties of solids (Young's modulus). His reputation as a physicist was built almost entirely upon a short, three-year period (1801-1803) of intense work as an instructor in…

The hydrogen spectrum is one of the most commonly demonstrated and most commonly studied. After the visible spectral lines (Balmer series) are explained by the Rydberg's formula, it becomes immediately apparent that there will also be similar infrared and ultraviolet series. As you may have taught your students, these are called the Paschen and…

The location of the center of mass of a beam can be calculated using the values of the reaction forces at its ends. The success of an apparently erroneous solution leads the authors to seek and find an explanation for why this solution works. We illustrate the procedure with an asymmetric beam.

The German Physics Olympiad is an extracurricular science contest for students. Here, they have the opportunity to compete against other talented students, can do physics outside of school, and take a first step to more engagement in the domain. Yet, female students participate in the competition in fewer numbers and are disproportionally more…

This case study examined the characteristics of classroom discourse during physics lessons in two single-sex high school classes--a boys' vs. a girls' class. All lessons were taught by the same teacher and covered the same topics. For each class, six lessons were recorded, transcribed, and coded and the characteristics of the discussion were…

Contextual features of assessments can influence the ideas students draw from and the ways they assemble knowledge. We used a mixed-methods approach to explore how surface-level item context impacts student reasoning. In study 1, we developed an isomorphic survey to capture student reasoning about fluid dynamics, a crosscutting phenomenon, in two…

We investigated how the endorsement of gender stereotypes affects disciplinary identity across three different science-technology-engineering-mathematics (STEM) areas: physics, biology, and chemistry, and whether such relationship is mediated by self-concept constructs, such as self-efficacy and perceived academic control. Building on the…