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Showing 1 to 15 of 956 results Save | Export
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Greenstein, George – Physics Teacher, 2022
We describe a simple, intuitively appealing interpretation of the observed ellipsoidal shape of the rotating Earth: it is that surface everywhere perpendicular to the net force upon it.
Descriptors: Science Instruction, Scientific Concepts, Physics, Motion
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Yves Nievergelt – International Journal of Mathematical Education in Science and Technology, 2024
On 24 June 1994 at Fairchild Air Force Base, during practice for an air show, a low-flying B-52H aircraft banked its wings vertically and crashed. Emphasizing the activity of modeling drag and gravity, these notes examine the possibility of recovery with several models. First, with algebra, historical data lead to a model where in a free fall near…
Descriptors: Air Transportation, Mathematical Models, Prevention, Calculus
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Benedetto, Elmo; Iovane, Gerardo – International Journal of Mathematical Education in Science and Technology, 2022
This paper has a pedagogical aim. Indeed, by using the relativistic velocity-addition and Einstein's equivalence principle (EEP), we want to analyse in a simple way the physics of time on a rotating non-inertial frame. We use a didactic approach considering four friends. The first is in the laboratory, the second at rest on the disk at radius r,…
Descriptors: Physics, Time, Motion, Scientific Principles
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Lin, Zhiqi; Xie, Yuchan; Tu, Chaoshi – Physics Teacher, 2023
Acceleration of moving objects is usually measured by photoelectric gates. In this paper, a method of acceleration measurement is proposed by pasting white card stock and black tape on a pulley and then using an Arduino to time the motion. This method only needs one photoelectric sensor to measure the acceleration. In contrast, using photoelectric…
Descriptors: Science Instruction, Physics, Scientific Concepts, Measurement Techniques
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Cross, Rod – Physics Education, 2022
If an empty coffee cup is spun on a horizontal surface about a vertical axis in an anti-clockwise direction, then the whole cup rotates slowly backwards, in a clockwise direction, about a vertical axis located outside the cup. Clues to this curious behaviour are presented by comparing it with other spinning objects.
Descriptors: Science Instruction, Physics, Motion, Scientific Concepts
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Toepker, Terrence – Physics Teacher, 2022
How many vertical jumps does it take to jump off of a rotating merry-go-round (MGR)? The answer is hidden in the expression: "r[subscript n]" = "r[subscript 0]" (1 + ["beta superscript 2") ["superscript n/2"]. When you make a vertical jump on a train moving on a straight line at constant speed (inertial…
Descriptors: Science Instruction, Physics, Scientific Concepts, Motion
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Perry, Spencer – Physics Teacher, 2022
The use of toys as teaching aids in physics classrooms has a rich history, and the role of play in science education is a well-established line of research. Much of what has been written on the topic has included discussions of specific toys and the implications of using those toys to teach physics. One of the toys from my childhood that seems to…
Descriptors: Physics, Science Instruction, Scientific Concepts, Toys
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Morris, Steven L. – Physics Teacher, 2023
The relativistic addition of velocities is usually introduced early in the study of Einstein's special theory of relativity. The equations are simple enough, but randomly chosen velocities lead to unwieldy calculations that can dishearten the student. This paper presents tables of velocity components in two dimensions, composed of five or fewer…
Descriptors: Science Instruction, Scientific Concepts, Concept Formation, Physics
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Minkin, Leonid; Sikes, Daniel – Physics Teacher, 2020
The dynamics of yo-yo motion are considered in this article. Many textbooks have examined the "rolling" motion of a yo-yo as it moves vertically up or down. However, in the vicinity of the lowest point, a jerk in the string occurs as the center of mass transitions from a linear motion to a pure rotational motion (with respect to the end…
Descriptors: Toys, Physics, Motion
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Ng, Chiu-king – Physics Teacher, 2022
In this paper, we utilize the readily known theory of the ideal transformer to furnish a self-contained qualitative explanation on the AC-powered Thomson jumping ring (TJR) experiment.
Descriptors: Science Experiments, Science Instruction, Physics, Scientific Concepts
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Cross, Rod – Physics Teacher, 2022
The trajectory of a ball in air is affected by aerodynamic drag and lift. In general, the trajectory needs to be calculated numerically since the acceleration varies with time in both the horizontal and vertical directions. If the trajectory remains approximately parabolic, then simple analytical solutions can be found, giving useful insights into…
Descriptors: Science Instruction, Scientific Concepts, Physics, Computation
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Kyla Adams; Anastasia Lonshakova; David Blair; David Treagust; Tejinder Kaur – Teaching Science, 2024
Quantum science is in the news daily and engages students' interest and curiosity. A fundamental quantum science concept that underpins medical imaging, quantum computing and many future technologies is quantum spin. Quantum spin can explain many physical phenomena that are in the lower secondary school curriculum, such as magnetism and light,…
Descriptors: Quantum Mechanics, Science Instruction, Physics, Science Activities
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Lozovenko, O.; Minaiev, Yu; Lutai, R. – Physics Education, 2022
The purpose of this publication is to present a novel approach to the demonstration of the Dzhanibekov effect. The main idea of our version is to use a lightweight spinning top of a spherical external form but distinct principal moments of inertia floating in the upward flow of air. As a result, the Dzhanibekov effect can be easily demonstrated…
Descriptors: Science Instruction, Teaching Methods, Physics, Scientific Principles
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Emslie, A. Gordon; Oliver, Travis P. – Physics Education, 2022
We study the variation of the apparent weight of an object with height above the surface of a planet with a (buoyant) atmosphere. Interestingly, this variation depends on two competing factors--the reduced gravitational acceleration (which acts to reduce the weight with increasing height) and the reduced buoyancy force in the progressively less…
Descriptors: Physics, Scientific Concepts, Astronomy, Motion
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Cross, Rod – Physics Education, 2021
An experiment is described where a billiard ball and a golf ball were projected with backspin on a horizontal surface to measure the transition from sliding to rolling. During both phases, the torque on the ball is affected by an offset in the line of action of the normal reaction force.
Descriptors: Science Experiments, Motion, Physics, Scientific Concepts
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