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Showing 151 to 165 of 3,895 results Save | Export
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Korff, Austin D.; Scott, Alan J. – Physics Teacher, 2018
There exists a very simple materials laboratory activity that can measure the elasticity and yield stress of steel using only a paper clip, ruler, and small weight. It is the World's Simplest Materials Laboratory and utilizes items common to any science classroom. In addition to steel, the elasticity and yield stress of any metal wire can be…
Descriptors: Science Laboratories, Laboratory Equipment, Measurement Equipment, Metallurgy
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Hobbs, Robert – Physics Teacher, 2018
Gas emission tubes are widely used laboratory and demonstration apparatus because the line source nature of the tube produces line spectra when viewed directly through a diffraction grating. These are long and distinctly visible images of the tube, located to either side of the zeroth order at an angle determined by the wavelength. A continuous…
Descriptors: Science Instruction, Scientific Concepts, Inquiry, College Science
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Overduin, James; Perry, Jonathan; Huxford, Rachael; Selway, Jim – Physics Teacher, 2018
Popular demonstrations commonly use stretched spandex fabric to illustrate the way in which curved spacetime mimics the force of gravity in general relativity. There are significant potential conceptual pitfalls to such an approach. In particular, it obscures the fact that most of what we ordinarily feel as gravity is due to the warping of time…
Descriptors: Science Instruction, Physics, Scientific Concepts, Demonstrations (Educational)
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Kácovský, Petr – Physics Teacher, 2018
In the last decade, a powerful tool has been given to physics teachers to visualize thermodynamic phenomena. Thermal imaging cameras are fascinating devices opening the world of (even small) temperature changes and being able to uncover hidden manifestations of many processes around us. This paper describes a few qualitative thermal imaging…
Descriptors: Science Instruction, Problem Based Learning, Physics, Thermodynamics
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Futoran, Ben – Physics Teacher, 2018
This is essentially how I start my class each year. As educators we know that the primary way to ensure content retention is to connect the information to the students' lives in a relevant way. Thankfully, as physics teachers, we teach the subject that explains nearly every natural phenomenon in the world…and outside of the world, for that matter.…
Descriptors: Physics, Science Instruction, Science Teachers, Relevance (Education)
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Monteiro, Martin; Stari, Cecilia; Cabeza, Cecilia; Marti, Arturo C. – Physics Teacher, 2018
Resonance is an ubiquitous phenomenon present in many systems. In particular, air resonance in cavities was studied by Hermann von Helmholtz in the 1850s. Originally used as acoustic filters, Helmholtz resonators are rigid-wall cavities that reverberate at given fixed frequencies. An adjustable type of resonator is the so-called "universal…
Descriptors: Science Instruction, Scientific Concepts, Acoustics, Science Experiments
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Galeriu, Calin – Physics Teacher, 2018
The recent use of Arduino Uno microcontroller boards for automated data acquisition has revolutionized physics education. The Arduino-based physics labs have dramatically lowered the cost of the experimental equipment, while at the same time replacing the commercial apparatus with open hardware and software. Students benefit greatly from rigorous…
Descriptors: Physics, Scientific Principles, Measurement Equipment, Science Laboratories
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Reed, B. Cameron – Physics Teacher, 2018
The discovery of nuclear fission was one of the most dramatic scientific breakthroughs of the 20th century. Within a few years, the fantastic energy latent in the nuclei of atoms would be powering reactors and bombs, a development that fundamentally changed the relationship between physics and human affairs. To drive home the magnitude of this…
Descriptors: Energy, Physics, Science Instruction, Scientific Concepts
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Kraftmakher, Yaakov – Physics Teacher, 2018
An improvement of the experiment with a driven pendulum is proposed: during a run, the phase shift between the driving force and displacement is continuously displayed vs. frequency. The method of phase measurements is taken from the lock-in detection technique. Using the new PASCO data acquisition system, the measurements in a frequency range…
Descriptors: Physics, Science Instruction, Measurement, Science Experiments
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Lincoln, James – Physics Teacher, 2018
There are already several articles describing ways to teach physics using smartphone apps, but what are some experiments you can perform immediately without downloading any additional software? In the spirit of increasing the amount of hands-on activities each of us is doing, and to give us backup activities when you have a few extra minutes of…
Descriptors: Telecommunications, Handheld Devices, Physics, Science Instruction
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Herrick, David L. – Physics Teacher, 2018
A well-known conclusion from elementary ballistic trajectory analysis is that the horizontal range of a projectile is maximized for a launch angle of 45°. The derivation of this result assumes that the launch speed is the same for all possible launch angles, but this neglects the fact that the work done against gravity by the launching mechanism…
Descriptors: Physics, Science Instruction, Scientific Principles, Energy
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Perkins, James; Ruiz, Michael J. – Physics Teacher, 2018
Care must be taken representing waves traveling in opposite directions. Erroneous results can occur when combining waves with the popular convention where a wave traveling to the right is [psi][subscript R] (x,t) = A sin (kx-[omega]t) and a left-traveling wave is [psi] (x,t) = A sin (kx + [omega]t). An easily overlooked pitfall is pointed out and…
Descriptors: Physics, Science Instruction, Critical Thinking, Teaching Methods
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Houlahan, Padraig – Physics Teacher, 2018
Electrical engineers often use software to analyze electrical circuits in order to understand circuit behaviors. Such software allows them to modify components and develop and improve their designs. One popular kind of circuit analysis software is based on SPICE (Simulation Program with Integrated Circuit Emphasis). In what follows, I describe how…
Descriptors: Physics, Science Instruction, Lighting, Electronics
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Gangui, Alejandro; Lastra, Cecilia; Karaseur, Fernando – Physics Teacher, 2018
The observation that the shadows of objects change during the course of the day and also for a fixed time during a year led curious minds to realize that the Sun could be used as a timekeeper. However, the daily motion of the Sun has some subtleties, for example, with regards to the precise time at which it crosses the meridian near noon. When the…
Descriptors: Science Instruction, Scientific Concepts, Astronomy, Motion
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Agrawal, Dulli Chandra – Physics Teacher, 2018
The non-SI unit sverdrup, named to honor Norwegian oceanographer and meteorologist Harald Ulrik Sverdrup (1888-1957), is adopted for quantifying large-scale volume transport by oceanographers, meteorologists, and atmospheric physicists. The sverdrup is used to appraise the volumetric rate of evaporation, precipitation, runoff, transport of ocean…
Descriptors: Oceanography, Meteorology, Physics, Water
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