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Showing 1 to 15 of 4,051 results Save | Export
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Koval'aková, Mária; Kladivová, Mária; Gibová, Zuzana – Physics Teacher, 2020
The acoustic resonance in four glass Helmholtz resonators with diameters of 70, 52, 40, and 32 mm was detected in the frequency range of 360 to 1700 Hz using the simple experimental setup presented in this paper. The measured amplitudes of acoustic pressure required correction since the sound pressure amplitude of the loudspeaker used was not…
Descriptors: Physics, Science Instruction, Laboratory Experiments, Undergraduate Students
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Blais, Brian S. – Physics Teacher, 2020
Progress is made in science by constructing many models (possibly of different complexities), testing them against measurements, and determining which of them explain the data the best. It is my observation, however, that in many introductory physics labs we provide students with the materials and methods to verify the "correct" model of…
Descriptors: Physics, Science Instruction, Laboratory Experiments, Teaching Methods
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Birriel, Jennifer; Birriel, Ignacio – Physics Teacher, 2020
When driving on a sunny day, one can sometimes observe a small solar spectrum in the rearview mirror of a vehicle. The formation of this "rainbow" results from the prism-like structure of the rearview mirror. Our investigation of this phenomenon reveals that the resulting spectrum is formed in a manner similar to the way a rainbow is…
Descriptors: Optics, Science Instruction, Demonstrations (Educational), Scientific Concepts
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Gash, Phillip – Physics Teacher, 2020
A previous journal article established that a hanging Slinky's restoring force is due only to the coils between the support and the Slinky's center of mass (hereafter COM). Correspondingly, it is expected the Slinky's elastic potential energy (hereafter EPE) is associated with only those coils; however, there is no confirming experimental…
Descriptors: Science Instruction, Physics, Science Experiments, Scientific Concepts
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Bell, Michael Scott – Physics Teacher, 2020
Double-slit interference is a difficult phenomenon for students to grasp in an introductory physics course. A thorough understanding of constructive and destructive interference is critical, but even with such an understanding, visualizing exactly how an interference pattern is formed by light passing through two slits can still be a challenge for…
Descriptors: Physics, Scientific Concepts, Light, Science Laboratories
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Bussani, Andrea – Physics Teacher, 2020
In this paper a "non-elementary system" is defined as a system consisting of elementary (i.e., indivisible) constituents. Such systems are a common feature of the standard model of particle physics: for example, according to the standard model, a proton (non-elementary particle) consists of two up quarks and one down quark (elementary…
Descriptors: Middle School Students, High School Students, Science Instruction, Physics
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Stenmark, Theodore; Allen, Thomas; Widenhorn, Ralf – Physics Teacher, 2020
We present a novel activity to demonstrate the Doppler shift of a sound wave, incident at an angle, upon a moving reflector. This activity is intended for use in an introductory physics laboratory focused on preparing students for the health and medical fields. The activity is designed to simulate Doppler velocity measurements from ultrasound…
Descriptors: Science Instruction, Physics, Science Laboratories, Allied Health Occupations Education
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Arribas, Enrique; Escobar, Isabel; Ramirez-Vazquez, Raquel; del Pilar Suarez Rodriguez, Carmen; Gonzalez-Rubio, Jesus; Belendez, Augusto – Physics Teacher, 2020
We believe that a natural focus of the physics education research community is on understanding and improving students' learning in our physics courses. Due to the increase in technology, we can bring laboratory experiments closer to our students. It is necessary to update our laboratories technologically to get closer to the world in which our…
Descriptors: Physics, Laboratory Experiments, Educational Technology, Handheld Devices
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Walkup, John R.; Key, Roger – Physics Teacher, 2020
In this article, we describe a fun and engaging card game called Speed Eleusis that teaches the process of scientific discovery and publication, including such practices as replication and retraction. Much like the traditional game of Eleusis and its variant Eleusis Express, this game involves students competing to model a pattern displayed in a…
Descriptors: Physics, Educational Games, Science Instruction, Introductory Courses
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Suárez, Álvaro; Baccino, Daniel; Martí, Arturo C. – Physics Teacher, 2020
The problem of a disc or cylinder initially rolling with slipping on a surface and subsequently transitioning to rolling without slipping is often cited in textbooks. Students struggle to qualitatively understand the difference between kinetic and static frictional forces--i.e., whereas the magnitude of the former is known, that of the latter can…
Descriptors: Physics, Kinetics, Motion, Science Experiments
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Lopac, Vjera; Hrupec, Dario – Physics Teacher, 2020
On November 16, 2018, at the 26th meeting of the General Conference on Weights and Measures (CGPM), a resolution was adopted that introduced historical changes into the International System of Units (SI). This decision, effective from May 20, 2019, established that the SI units of measurement will be defined by means of a set of seven fixed…
Descriptors: Physics, Measurement, Scientific Concepts, Conferences (Gatherings)
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Priyanto, Aan; Yusmantoro; Aji, Mahardika Prasetya – Physics Teacher, 2020
When we travel in a train moving at a certain velocity, we observe the stationary objects outside are moving backwards. These stationary objects seem to move due to a relative velocity. Consider that the stationary object outside the train is a man standing on the stationary floor watching a woman moving on a train. The woman on a train will see…
Descriptors: Telecommunications, Handheld Devices, Motion, Physics
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Lincoln, James – Physics Teacher, 2020
A new device for teaching the physics of sound, specifically demonstrating the wavelengths of standing sound waves, is here described. I define a "Lincoln's Tube" as any hollow tube that uses lights (LEDs typically) to demonstrate the presence of sound standing waves. The name is chosen intentionally to recall a Ruben's Tube or a Kundt's…
Descriptors: Physics, Science Instruction, Acoustics, Scientific Concepts
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Ekkens, Tom – Physics Teacher, 2020
Semiconductor devices, usually made from silicon wafers, are present in the electronic gadgets that we use on a daily basis. In an introductory physics class, the textbook usually devotes a few pages to these devices and moves on. As a result, students may readily forget the material or fail to see how it relates to their lives. A solution is to…
Descriptors: Physics, Science Instruction, Introductory Courses, Electronics
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Gearhart, Bradley; MacIsaac, Dan – Physics Teacher, 2020
Light rays refract when passing through pockets of transparent fluids with different indices of refraction such as ordinary air pockets of varying temperature. This phenomenon makes night stars twinkle, distorts views above hot asphalt roads and hot barbeque grills, and provides an opportunity for visualizing the normally invisible movement of…
Descriptors: Light, Physics, Science Instruction, Visualization
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