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Groff, Jeffrey R. – Physics Teacher, 2012
Bioscience and premedical profession students are a major demographic served by introductory physics courses at many colleges and universities. Exposing these students to biological applications of physical principles will help them to appreciate physics as a useful tool for their future professions. Here I describe an experiment suitable for…
Descriptors: Science Instruction, Optics, Physics, College Science
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Rabal, Hector; Cap, Nelly; Trivi, Marcelo – Physics Education, 2011
Imaging of three-dimensional objects by lenses and mirrors is sometimes poorly indicated in textbooks and can be incorrectly drawn. We stress a need to clarify the concept of longitudinal magnification, with simulated images illustrating distortions introduced along the optical axis. We consider all possible positions of the object for both a…
Descriptors: Textbooks, Science Instruction, Physics, Optics
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Greenslade, Thomas B., Jr. – Physics Teacher, 2009
The familiar kaleidoscope toy was developed by the Scottish physicist David Brewster (1781-1868) in 1816, patented by him in 1817, and described in his 1819 book, "A Treatise on the Kaleidoscope." Generations of elementary students have made their own kaleidoscopes by assembling three microscope slides inside a tube and looking through it at a…
Descriptors: Physics, Science Instruction, Toys, Elementary School Science
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Honnicke, M. G.; Gavinho, L.; Cusatis, C. – European Journal of Physics, 2008
Compton scattering and diffuse scattering degenerate the contrast in radiographic images. To avoid such scattering effects, a grid, between the patient and the film is currently used to improve the image quality. Teaching this topic to medical physics students requires demonstration experiments. In this paper, an optical analog to an x-ray…
Descriptors: Radiology, Structural Elements (Construction), Photography, Physics
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Matteucci, Giorgio; Migliori, Andrea; Medina, Francisco; Castaneda, Roman – European Journal of Physics, 2009
A primary electron beam of a transmission electron microscope is scattered into secondary beams by the planes of atoms of a single crystal. These secondary beams are focused to form a diffraction pattern on the final screen. This experiment is similar to the Thompson one which, independently by Davisson and Germer, demonstrated the de Broglie…
Descriptors: Science Instruction, Science Experiments, Molecular Structure, Laboratory Equipment
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Matteucci, Giorgio – European Journal of Physics, 2011
The Young-Feynman two-hole interferometer is widely used to present electron wave-particle duality and, in particular, the buildup of interference fringes with single electrons. The teaching approach consists of two steps: (i) electrons come through only one hole but diffraction effects are disregarded and (ii) electrons come through both holes…
Descriptors: Teaching Methods, Science Instruction, Laboratory Equipment, Molecular Structure
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Geissler, Peter; Zadunaisky, Jose – American Journal of Physics, 1974
Reports on the physical origins of spherical aberrations in axially symmetric electrostatic lenses to convey the essentials of electon optics to those who must think critically about the resolution of the electron microscope. (GS)
Descriptors: Biology, College Science, Laboratory Equipment, Medicine
Hearsey, Paul K. – 1978
This document presents a model for a simple transmission electron microscope for educational purposes. This microscope could demonstrate thermonic emission, particle acceleration, electron deflection, and flourescence. It is designed to be used in high school science courses, particularly physics, taking into account the size, weight, complexity…
Descriptors: Educational Media, Electronic Equipment, High Schools, Laboratory Equipment
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Toepker, Terrence P. – Physics Teacher, 1995
Describes the construction and use of homemade kaleidoscopes using film canisters and microscope slides. (JRH)
Descriptors: Elementary Secondary Education, Optics, Physics, Science Activities
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Sheppard, C. J. R. – Physics Teacher, 1978
Describes the principle of the scanning optical microscope and explains its advantages over the conventional microscope in the improvement of resolution and contrast, as well as the possibility of producing a picture from optical harmonies generated within the specimen.
Descriptors: Biology, College Science, Higher Education, Laboratory Techniques
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Physics Education, 1975
Presents notes on three physics experiments on (1) light and lenses, (2) determination of the pVT surface of a freon, and (3) use of an eyepiece with microscopes and telescopes. (RH)
Descriptors: Chemistry, Laboratory Experiments, Optics, Physics
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Derby, Stanley K.; Kruglak, Haym – American Journal of Physics, 1996
Describes an alternate method of demonstrating thin film interference fringes with a laser by using a microscope slide glass cover. (MKR)
Descriptors: College Science, Demonstrations (Science), Higher Education, Lasers
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Gottlieb, Herbert H., Ed. – Physics Teacher, 1979
Explains how to use glass tubing to form a simple microscope; how to construct an over-voltage protection circuit; and how to demonstrate electromagnetic effects with a coil and rubber bands. (GA)
Descriptors: Demonstrations (Educational), Electricity, Experiments, Instruction
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Biermann, Mark L.; Biermann, Lois A. A. – Physics Teacher, 1996
Discusses descriptions of the way in which an optical system controls the quantity of light that reaches a point on the image plane, a basic feature of optical imaging systems such as cameras, telescopes, and microscopes. (JRH)
Descriptors: Higher Education, Light, Optics, Physics
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Matteucci, G.; Pozzi, G. – American Journal of Physics, 1978
Presents the results of two experiments concerning the phenomena of the interference of probabilities and of the so called Aharonov-Bohm effect. An electron biprism and a standard electron microscope have been used for the experiments. (Author/GA)
Descriptors: College Science, Higher Education, Laboratory Experiments, Nuclear Physics
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