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Dai, Rucheng; Wang, Zhongping; Zhang, Zengming; Sun, Lazhen – Physics Teacher, 2022
In this paper, an experimental setup composed of a color-mixing device, power supply, and spectrometer is developed. This setup is available for students to do hands-on color mixing with red, green, and blue light in undergraduate labs. LED volt-ampere and spectrum characteristics are investigated. The apparatus was used to perform additive color…
Descriptors: Color, Physics, Science Activities, Undergraduate Students
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Becchetti, F. D. – Physics Teacher, 2022
There is an ongoing challenge with STEM education: making physics, math, and science, in general, interesting, understandable, and retentive for college science and non-science majors, K-12 students, and the public. If not imparting detailed knowledge, at least one would like to introduce important concepts that will be remembered, appreciated,…
Descriptors: STEM Education, Physics, Deception, Leisure Time
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Ekey, Robert; Edwards, Andrea; McCullough, Roy; Reitz, William; Mitchell, Brandon – Physics Teacher, 2017
The incandescent bulb has been a useful tool for teaching basic electrical circuits, as brightness is related to the current or power flowing through a bulb. This has led to the development of qualitative pedagogical treatments for examining resistive combinations in simple circuits using bulbs and batteries, which were first introduced by James…
Descriptors: Physics, Science Instruction, Teaching Methods, Science Experiments
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Bonham, Scott W. – Physics Teacher, 2018
An important aspect of science education involves helping students learn to read and communicate scientific information and arguments. In this note, I would like to share a resource that I have come across which I have found to be a useful tool for helping students improve those skills, learn content material, and acquaint them with a great…
Descriptors: Science Education, Physics, Scientific and Technical Information, Science Process Skills
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Smith, Donald A.; Melrose, Justyn – Physics Teacher, 2014
The standard method to create dramatic color images in astrophotography is to record multiple black and white images, each with a different color filter in the optical path, and then tint each frame with a color appropriate to the corresponding filter. When combined, the resulting image conveys information about the sources of emission in the…
Descriptors: Astronomy, Spatial Ability, Color, Visual Perception
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MacInnes, Iain; Smith, Stuart – Physics Teacher, 2010
In the "The Science Study Series" book "The Physics of Television", it is stated that persistence of vision lasts for about a tenth of a second. This will be a notional figure just as 25 cm is taken to be the least distance of distinct vision. Estimates range from 1/8 to 1/16 s.
Descriptors: Persistence, Vision, Visual Perception, Science Instruction
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Kreis, Steve – Physics Teacher, 2008
This paper tries to demonstrate that it is not reasonable to judge the quality of pictures that a camera can produce just by the number of pixels that the sensor has. It does so by trying to relate the number of pixels in a picture to the resolution that the eye can see at various distances away from prints of different size.
Descriptors: Photography, Science Instruction, Pictorial Stimuli, Visual Perception
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Keeports, David – Physics Teacher, 1995
Uses a diode array spectrometer to explain why blue objects appear red when viewed through the yellowish amber lens of "blue blocking" sunglasses. (JRH)
Descriptors: Color, Optics, Physics, Science Activities
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Kernohan, James C. – Physics Teacher, 1991
The effect of background color on the perception of color by students is discussed. Explanations on why students only see certain colors when viewing colored marks on a blackboard through different color filters are provided. (KR)
Descriptors: Color, Light, Physics, Problem Solving
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Gabrielson, Curt – Physics Teacher, 1996
Describes an in-depth, comprehensive method that enables students to understand the basic concepts of visual perception. (JRH)
Descriptors: Physics, Science Activities, Science Instruction, Scientific Concepts
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Jewett, John W., Jr. – Physics Teacher, 1993
Describes the nineteenth-century parlor trick entitled the Fluttering Heart phenomenon which uses a red heart on a bright blue background. Discusses theories concerning the apparent fluttering. Suggests doing the trick with a red light-emitting diode in a darkened room. (MVL)
Descriptors: Demonstrations (Educational), Light, Misconceptions, Optics
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Sanny, Jeff – Physics Teacher, 1999
Describes an experiment in which students work together in small groups, take data, and make a calculation to roughly determine the diameter of the blind spot in their eye. (WRM)
Descriptors: Higher Education, Optics, Physics, Physiology
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Kruglak, Haym; Campbell, Don – Physics Teacher, 1983
Describes an experiment enabling students to apply concept of diffraction, determine limits of their color perception, learn how to measure wavelength with a simple apparatus, observe continuous and line spectra, and associate colors with corresponding wavelengths. The homemade diffraction-grating spectrometer used is easily constructed. (JN)
Descriptors: College Science, Color, High Schools, Higher Education
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Minnix, Richard B.; Carpenter, D. Rae, Jr. – Physics Teacher, 1983
Describes inexpensive method of determining harmonic content of a repetitive signal such as a sound wave and demonstrations of the precession of a bicycle wheel and inversion shadows on the retina. Also describes a resonance demonstrator (made from scrap material) driven by a portable jigsaw. (JN)
Descriptors: Acoustics, College Science, Demonstrations (Educational), High Schools