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Aok, Yoki; Yawata, Kazushi – Physics Teacher, 2022
A new system for tracking a metal ball rolling on the slope of the touch panel of a tablet computer was developed. The widespread introduction of tablets in educational environments allows the use of a convenient dynamic measurement in schools.
Descriptors: Science Experiments, Measurement Techniques, Motion, Handheld Devices
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Greenslade, Thomas B., Jr. – Physics Teacher, 2021
George M. Hopkins (1842-1902) wrote a series of articles on demonstrating physical phenomena in the "Scientific American" during the last years of the 19th century. These were collected in a book, "Experimental Science," that was first published in 1890, with revisions in 1892 and 1902. It must have been well received, for the…
Descriptors: Physics, Science History, Science Experiments
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Zhu, Pengfei; Ling, Yizhou – Journal of Chemical Education, 2022
Conventional mobile phone colorimetry usually utilizes the RGB color mode to measure concentration of solutions, but the paper entitled "Determining the Amount of Copper(II) Ions in a Solution Using a Smartphone" proposes the use of hue ("H") to measure the concentration. It is pointed out that the "H" value increases…
Descriptors: Color, Telecommunications, Handheld Devices, Measurement
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Neat, Adam – Physics Teacher, 2022
Gravity bends light. One can argue this by reasoning that a beam of light should travel in a curved path when viewed from within an accelerating frame of reference, and then invoking Einstein's principle of equivalence, which asserts that the effects observed in an accelerating frame of reference are indistinguishable from the effects observed in…
Descriptors: Physics, Scientific Concepts, Light, Scientific Principles
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Cross, Rod – Physics Teacher, 2022
What happens when a perfectly elastic ball collides with a completely inelastic ball? It is shown that the outcome depends on the stiffness of each ball. A standard textbook problem in mechanics is to calculate the outcome of a head-on collision between two balls using conservation of momentum and kinetic energy. It is easily shown that the…
Descriptors: Physics, Science Instruction, Mechanics (Physics), Science Experiments
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Kim, Minkyung; Kang, Wonseok; Kim, Jung Bog – Physics Teacher, 2021
Nearly everyone, including physics students, finds rainbows to be fascinating and much has been written about them. For example, in a 2020 paper, Kenneth Ford sets forth the basic theory of rainbows created by water droplets at the level of geometric optics and uses a graphical approach to address the question of the relative intensities of the…
Descriptors: Science Experiments, Scientific Concepts, Physics, Light
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Chattopadhyay, Purnesh; Wang, Linlin; Eychmu¨ller, Alexander; Simmchen, Juliane – Journal of Chemical Education, 2022
We present a simple undergraduate level experiment dealing with the preparation and characterization of a colloidal Langmuir-Blodgett (LB) film. The experiment is designed to invoke an interdisciplinary understanding of colloid chemistry and surface science. It will allow the students to develop the concepts of wettability, hydrophobicity, and…
Descriptors: Undergraduate Students, Student Projects, Chemistry, Science Experiments
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Dorsel, Dominik; Staacks, Sebastian; Heinke, Heidrun; Stampfer, Christoph – Physics Teacher, 2022
As smartphones have become a part of our everyday life, their sensors have successfully been used to allow data acquisition with these readily available devices in a variety of different smartphone-based school experiments. Such experiments most commonly take advantage of the accelerometer and gyroscope. A less frequently used sensor in…
Descriptors: Handheld Devices, Measurement Equipment, Science Experiments, Navigation
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Cross, Rod – Physics Education, 2022
Oblique angle collisions of two penny coins on a smooth, horizontal surface were filmed with a video camera to investigate the physics of the collision process. If one of the coins is initially at rest, then the two coins emerge approximately at right angles, as commonly observed in billiard ball collisions and in puck collisions on an air table.…
Descriptors: Physics, Science Instruction, Video Technology, Science Experiments
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Cordeiro, Cristiano M. B.; Fujiwara, Eric – Physics Teacher, 2022
The refractive index (RI) is probably the single most important parameter in optical systems. Chromatic dispersion, on the other hand, indicates how the RI depends on the wavelength and is central in, e.g., optical communication systems. Chromatic dispersion also plays an important role when teaching optics due to the captivating natural…
Descriptors: Physics, Science Instruction, Science Experiments, Light
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Fontes, Daniel T. M.; Rodrigues, André Machado – Physics Teacher, 2021
Electromagnetism is a complex topic for students at different educational levels. Perhaps one of the reasons for this is that students are unable to visualize the forces, fields, currents, and other electromagnetism key concepts that are related to the topic. Most teachers address this difficulty by including the use of some technological…
Descriptors: Scientific Principles, Magnets, Science Experiments, Scientific Concepts
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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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Sharpe, J. P.; Yee, C. – Physics Teacher, 2021
The Young's two-slits experiment is arguably one of the most famous and beautiful experiments in physics. In introductory physics labs the experiment is almost exclusively carried out using a laser, and it is introduced this way in some introductory physics textbooks. In the case of laser illumination, light passes directly through the slits and…
Descriptors: Science Experiments, Physics, Introductory Courses, College Science
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Lee, Ilbong; Hwang, Ilha; Mukhopadhyay, Rahul Dev; Kim, Kimoon – Journal of Chemical Education, 2022
The formation of chemical patterns is in general difficult to control due to the random diffusive motions of the reacting chemical species in solution. In this paper, we present a new method using audible sound to control the formation of chemical patterns obtained in blue bottle experiments. The waves generated on the surface of the solution by…
Descriptors: Chemistry, Acoustics, Science Experiments, Science Instruction
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Medvedev, Jury J.; Tracey, Chantal; Engelhardt, Helen; Steksova, Yulia; Krivoshapkin, Pavel; Krivoshapkina, Elena; Klinkova, Anna – Journal of Chemical Education, 2022
Electrochemistry represents a powerful sustainable method for chemical synthesis; however, its widespread application is limited due to the lack of exposure and appropriate basic training of synthetic chemists and engineers in electrochemistry and electrochemical engineering. The introduction of diverse laboratory practices to the current…
Descriptors: Hands on Science, Chemistry, Scientific Concepts, Science Experiments
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