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Physics Models Help Students Identify Experimental Errors
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| Pengarang | : | Daniel Crowe |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 562-563 |
| Abstrak | : | After years of reading my students’ inadequate descriptions of sources of error, I decided to do something about it. I was tired of the infamous “human error,” and the perhaps true, but inappropriate, “I might have made a mistake during the calculations.” For the past several years, I have been explicitly teaching my students about physics models and their relationship to sources of experimental errors. It has become a core element of my AP Physics C: Mechanics course. |
Theoretical and Experimental Analysis of Tethered Buoys
| Pengarang | : | Hans C. Mayer |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 556-561 |
| Abstrak | : | Hydrostatics has a long history in the field of fluid mechanics (just shout “Eureka!” to remind you of this—consider jumping out of a bathtub for dramatic effect).1,2 However, it is often overshadowed by topics involving fluids in motion in courses that cover fluid mechanics principles. That is understandable given the need to learn about the fundamental principles that underlie fluids in motion as our modern world is dependent on moving and controlling fluids from micro to macro scales. But hydrostatics problems, in particular those that require students to investigate forces on submerged surfaces and, by extension, buoyancy, are excellent tools to reinforce concepts of statics. And statics is the gateway to dynamics. Therefore, a solid foundation in hydrostatics, fostered by exposure to interesting examples, can pay dividends as students progress and attempt to understand fluids in motion. |
Quark/Gluon Plasma: When Protons Melt
| Pengarang | : | Don Lincoln |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 550-554 |
| Abstrak | : | One of the first scientific concepts taught to children is the idea that matter can be a solid, liquid, or gas. Indeed, if you were to ask most American adults how many phases of matter there are, the most likely answer you would get is three. It would not be unreasonable to consider this to be common knowledge. |
Minimum Distance That a Pendulum Bob Wraps Once Around a Post
| Pengarang | : | Ping Jia; Hong Li; Bixing Yan |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 7) |
| Halaman | : | 548-549 |
| Abstrak | : | An intriguing simple pendulum issue was raised in a Physics Challenge in The Physics Teacher.1 We generalize the original challenge (in which the pendulum is released from its initial horizontal orientation) by allowing the initial angle of the pendulum to vary as follows. The ball is initially held in a position where the string is taut and at an angle of α below the horizontal plane of the fixed point. Once released, the ball travels in a circular path with air resistance assumed to be negligible. |
Ethel: A virtual teaching assistant
| Pengarang | : | Gerd Kortemeyer |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 8) |
| Halaman | : | 698-699 |
| Abstrak | : | Generative artificial intelligence (AI) has shown potential in solving physics problems1,2 and providing feedback on assessments.3 However, results sometimes still are inaccurate4 or at the wrong level, or use notations and definitions not appropriate for a particular course. A possible solution is augmenting the prompts with course-specific reference materials. Also, for feedback on homework solutions and grading exams, the problem text and the sample solution or grading rubric can be injected into the prompts.5 Project Ethel at ETH Zurich aims to construct a virtual teaching assistant using these practices. |
Fortnite as a physics laboratory
| Pengarang | : | Andrew Vanden Heuvel; Samuel Ntadom; Zachary Meyer; Rigel Reynolds |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 8) |
| Halaman | : | 696-697 |
| Abstrak | : | We describe the development of a virtual physics laboratory built and published within the popular video game Fortnite. This educational tool allows students to design virtual experiments and extract the player’s motion data directly from the game engine. By leveraging the unique capabilities of Fortnite Creative, and Unreal Editor for Fortnite (UEFN), our “islands” represent a noteworthy advancement in the use of video games for physics education. |
Building and using solar wax melters
| Pengarang | : | Judith Beck |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 8) |
| Halaman | : | 694-695 |
| Abstrak | : | Building solar ovens is an effective activity to illustrate basic physics principles as well as involve students in a design process.1,2 A “solar wax melter” is related to a traditional solar cooker but has the specific purpose of cleaning beeswax through melting. As part of a first-year seminar course on the Sun, students worked in teams to plan, build, and tend solar wax melters. The project engaged students with the concepts of solar energy and solar motion as well as providing an opportunity for them to work with peers to address a challenge. |
The impact of two-year college physics programs on the profession
| Pengarang | : | Sherry Savrda |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 8) |
| Halaman | : | 692-693 |
| Abstrak | : | In a previous column,1 we reviewed statistics related to community college enrollments and diversity. Those statistics were for all students enrolled in public two-year colleges (TYCs). But what about the students enrolled in our physics courses |
Chlorophyll fluorescence: Visualizing the inner-filter effect
| Pengarang | : | Yi Jinn Lillian Chen; Jiann-Shing Lih; Tzu-Chun Chen; Jeng-Fung Hung; Jing-Yuan Ko |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 8) |
| Halaman | : | 690-691 |
| Abstrak | : | Several TPT papers have demonstrated the effects of fluorescence using laser pointers as excitation sources with olive oil, cola, and highlighter inks.1–3 A blue laser incident on olive oil appears to “stop” a short distance into the fluid.3,4 This is the result of the “inner filter effect.” Here we provide a hands-on experiment to further illuminate this effect. |
Magnetic field of a linear octupole
| Pengarang | : | Enrique Arribas; Isabel Escobar; Raquel Ramirez-Vazquez; Arturo C. Martí; Martín Monteiro; Cecilia Stari; Augusto Belendez |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 62 (No. 8) |
| Halaman | : | 688-689 |
| Abstrak | : | We measure the magnetic field produced by a linear octupole formed by four magnets placed in such a way that both their magnetic moments and their quadrupole moments cancel each other. The magnetic field is measured with the magnetic sensor of a smartphone together with a suitable app, using the Android operating system. The main objective is to determine the dependence of the x-component of the magnetic field on distance and compare the experimental results with the theoretical result that tells us that this dependence is a quintic decrease. |