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Riffs on the Inclined Plane
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| Pengarang | : | Thomas B. Greenslade, Jr. |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 759-761 |
| Abstrak | : | The inclined plane is one of the basic building blocks of introductory mechanics, and is so common in everyday life that we tend not to notice it. The inclined plane in Fig. 1 was just too obvious to overlook! We discovered this wonderful inclined plane connecting the two buildings of a high school in Winslow, Arkansas. In this article, I will remind myself of the many times that I have encountered the inclined plane in my courses, my old physics texts, and the many apparatus catalogs in my collection. |
Using a Hydrogen Car to Discuss Renewable Energy (in a University Outreach Program) with Middle School Students
| Pengarang | : | Cristal Schult |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 754-758 |
| Abstrak | : | The use of hydrogen and hydrogen cars is seen as a promising solution to reduce carbon emissions. It is therefore an interesting topic for school, especially for science projects. In this context, it must be emphasized that hydrogen is not a primary energy source, but rather a carrier. This paper describes the contents, the materials that were used, and the conduction of an experiment with a hydrogen car done with eighth graders in a university outreach program. By using a model hydrogen car (Figs. 1 and 2), students were brought into a position in which they were able to demonstrate and conclude whether hydrogen is a viable technology. They were able to discuss the efficiency, the renewable (or not) nature of hydrogen, and limitations of the technology. |
A Physics Capstone Course in Sustainable Energy
| Pengarang | : | Blane Baker; Maggie Sherer |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 750-753 |
| Abstrak | : | Sustainability is now a critical global priority due to ongoing challenges such as climate change, limited traditional energy sources, increased energy demands, and population growth. To provide opportunities for students to engage in the study of sustainability and to prepare them for careers that rely increasingly on sustainable practices, we have designed and taught a capstone course, Physics of Sustainability. This course is a requirement for both physics and civil engineering majors at our institution and consists of four main units: sustainability and climate change, wind energy, solar energy, and nuclear energy. Each unit begins with a review of relevant topics from introductory (calculus-based) and intermediate-level physics courses and then extends that knowledge to cover appropriate advanced physics topics. Students also integrate and synthesize material from various areas of physics and apply principles from other disciplines to address current problems. |
Small Lab Debates: A Simple Way to Engage Your Students in the Scientific Experimental Approach
| Pengarang | : | Jean-Francois Parmentier; Nabil Lamrani |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 746-749 |
| Abstrak | : | Engaging students in authentic scientific processes is a big difficulty for physics instructors. Because physics is inherently an experimental science, our laboratories can be a good place to do it. However, the purpose of experiments is often to demonstrate a principle that the students have already learned, and the emphasis is on quantitative data analysis with plenty of instructions on how to carry out the experiment. This method is at odds with the scientific approach. |
Use of a Theremin as an Introductory Physics and Electronics Learning Tool
| Pengarang | : | Silvia Alonso-Perez |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 742-745 |
| Abstrak | : | In this paper, I propose to use the theremin (Fig. 1), which is one of the oldest and simplest electronic musical instruments, to help students in introductory physics courses (in secondary school or university) learn some basic concepts related to wave physics and electricity. |
A Unifying Rule for Maximizing the Range or Minimizing the Launch and Impact Speed of a Projectile Along a Tilted Plane
| Pengarang | : | Jeffrey D. Marx |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 739-741 |
| Abstrak | : | The motion of a projectile moving under the influence of gravity in the absence of air resistance has been analyzed many times in this journal. For example, there have been articles devoted to the details of the path of a projectile1–4 and different launching situations.5–7 Other papers have looked at determining the maximum height of a projectile,8 finding the range of a projectile under very general circumstances,9 and hitting a moving target.10 Finally, some articles detailed engaging ways to incorporate projectile motion in the classroom or laboratory.11–13 In this paper, we will rederive a rule that dictates the launch angle maximizing the range, but generalize it to include minimizing the launch and impact speed of a projectile along a tilted plane. |
Perspectives of Scientists Involved in World War II
| Pengarang | : | Alan Scott |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 731-735 |
| Abstrak | : | World War II was fought on sea, land, and air but also in laboratories. Seeing the peril of fascism and totalitarianism—and its scientific machinery for war—Allied scientists confronted this growing menace with laboratory pursuits. Herein is a synopsis of this war effort, with partiality toward physics and a focus on the circumstances, ethics, and motivations of the scientists. It is our scientific and cultural heritage, which deserves some allocation in the physics curriculum. |
Studying the Foundations of Optics with the Master
| Pengarang | : | Scott W. Bonham |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 736-738 |
| Abstrak | : | Physics teaching can and should help address pressing social issues. We need to improve the discussion of science in the public sphere by emphasizing the importance of evaluating the evidence behind claims. We need to redress racial discrimination within our own discipline. And of course, we also need to teach physics. Doing all three at once is a challenge, but sometimes it is possible. One thing I have done in my conceptual optics course is to explicitly connect our study of the foundational ideas of optics to the breakthrough work of the largely forgotten non-European founder of modern geometric optics, combining hands-on activities replicating some of his experiments with short readings of his opus magnus and discussions of how we know what we know in science. |
Adding a New Layer to a Favorite Demonstration: The Falling Magnet in a Conducting Tube
| Pengarang | : | Robert Hobbs |
| Nama Majalah/Jurnal | : | The Physics Teacher |
| Volume / Edisi | : | 61 (No. 9) |
| Halaman | : | 727-730 |
| Abstrak | : | This note describes a new modification of the falling magnet in a conducting tube1 demonstration (Fig. 1). In this version of the eddy current demonstration, thin-walled hobby brass tubing is used rather than the traditional copper pipe. These tubes come in nesting size increments that allow a slip fit for the next larger size. The typical demonstration now goes by stages, increasing the wall thickness with each drop of the magnet.The thin wall offers greater resistance to the induced current, and since brass is not as good a conductor as copper, a single tube only modestly retards the falling magnet. The effect is still clearly visible, but is not as dramatic as in the standard demonstration. Adding successive layers of tubing significantly reduces the net resistance of the eddy current path, and the drop time is visibly increased as each new layer is added. |
Electricity for All: Issues, Challenges, and Solutions for Energy-Disadvantaged Communities [Scanning the Issue]
| Pengarang | : | Claudio Cañizares |
| Nama Majalah/Jurnal | : | Proceedings of the IEEE |
| Volume / Edisi | : | 107 (No. 9) |
| Halaman | : | 1775-1779 |
| Abstrak | : | Millions of people have limited or no access to electrical energy. A diverse group of scholars and activists, from individual researchers to nongovernmental organizations (NGOs), civil society organizations, UN, and increasingly to engineering and financial private sector firms, have been working on initiatives to address this issue, which is considered by many a human rights problem. Energy access is not only a challenge for developing economies but is also equally important for service to remote areas such as the Arctic, islands, and communities distant from the grid. Several governments and private institutions, as well as nongovernment organizations around the world, are now funding projects and a variety of initiatives to help impoverished communities, especially across Africa and remote regions, develop clean and sustainable energy systems. The IEEE is actively involved in addressing energy access issues through several initiatives, such as the Smart Village program, focusing on “integrating sustainable electricity, education, and entrepreneurial solutions to empower off-grid communities” (http://ieee-smart-village.org/). In this special issue, we concentrate on highlighting the current state of knowledge associated with strategies for bringing clean, affordable, and sustainable electricity service reliably to energy-limited communities, based on local renewable energy (RE) sources and storage systems. Sociopolitical and economic forces as well as inclusionary and exclusionary culture or practices that often define the technical approaches and solutions offer opportunities for progress on this important problem. |