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LoPresto, Michael C. – Physics Teacher, 2018
In a recent "AstroNote," I described a simple exercise on the mass-luminosity relation for main sequence stars as an example of exposing students in a general education science course of lower mathematical level to the use of quantitative skills such as collecting and analyzing data. Here I present another attempt at a meaningful…
Descriptors: Physics, Scientific Concepts, Astronomy, General Education
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LoPresto, Michael C. – Physics Education, 2011
What follows is an alternative to the standard tuning fork and quarter-wave tube speed of sound experiment. Rather than adjusting the water level in a glass or plastic tube to vary the length of an air column, a set of resonance tubes of different lengths is used. The experiment still demonstrates the principles of standing waves in air columns…
Descriptors: Science Instruction, Acoustics, Physics, Science Experiments
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LoPresto, Michael C. – Physics Teacher, 2010
Comparing the predicted and actual rolls of combinations of both two and three dice can help to introduce many of the basic concepts of statistical thermodynamics, including multiplicity, probability, microstates, and macrostates, and demonstrate that entropy is indeed a measure of randomness, that disordered states (those of higher entropy) are…
Descriptors: Thermodynamics, Scientific Concepts, Probability, Science Experiments
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LoPresto, Michael C. – Physics Education, 2009
Consonance and dissonance are subjective perceptions that are reactions of the human ear to whether or not musical intervals sound "pleasing." The physical causes of consonance and dissonance are not as well understood as other subjective properties of sound perceived by the ear such as pitch, loudness, and quality (timbre). What follows is an…
Descriptors: Intervals, Human Body, Perception, Auditory Stimuli
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LoPresto, Michael C.; Jacobs, Diane A. – Physics Education, 2007
In this exercise the US Standard Atmosphere is used as "data" that a student is asked to model by deriving equations to reproduce it with the help of spreadsheet and graphing software. The exercise can be used as a laboratory or an independent study for a student of introductory physics to provide an introduction to scientific research…
Descriptors: Scientific Research, Physics, Independent Study, Models
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LoPresto, Michael C. – Physics Education, 2007
Simple experiments involving musical instruments of the woodwind family can be used to demonstrate the basic physics of vibrating air columns in resonance tubes using nothing more than straightforward measurements and data collection hardware and software. More involved experimentation with the same equipment can provide insight into the effects…
Descriptors: Musical Instruments, Experiments, Physics, Data Collection
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LoPresto, Michael C. – Physics Teacher, 2006
What follows is a description of a simple experiment developed in a non-mathematical general education science course on sound and light for fine arts students in which a guitar is used with data collection hardware and software to verify the properties of standing waves on a string.
Descriptors: Science Instruction, Science Experiments, Musical Instruments, Physics
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LoPresto, Michael C. – Physics Education, 2003
Describes experiments to address the properties of brass musical instruments that can be used to demonstrate sound in any level physics course. The experiments demonstrate in a quantitative fashion the effects of the mouthpiece and bell on the frequencies of sound waves and thus the musical pitches produced. (Author/NB)
Descriptors: Acoustics, Demonstrations (Science), Higher Education, Music