Publications

Michael J. Ruiz, "Speed, acceleration, and distance plots from a racecar speedometer (0 – 300 km^-1)" Physics Education 56, 055035 (September 2021). pdf

Michael J. Ruiz and Charles Cranford, "Frozen waterfall and a video of supercooled water turning into frazil ice," Physics Education 55, 055030 (September 2020). pdf and Video Abstract

Michael J. Ruiz and Rob Berls (Department of Drama), "Vacuum Cleaner Isolates Over 12 Harmonics in the Corrugated Whistling Tube," Physics Education 55, 035012 (May 2020). pdf and Video Abstract

Michael J. Ruiz and James Perkins, "SpaceX Rocket Data Satisfies Elementary Hohmann Transfer Formula," Physics Education 55, 025011 (March 2020). pdf

Ethan Chester (Asheville High School Student) and Michael J. Ruiz, "HTML5 lab app relating circular motion to harmonic motion and the wave equation," Physics Education 55, 013004 (January 2020).

Michael J. Ruiz, "Dioptres for a Myopic Eye from a Photo," Physics Education 54, 065010 (November 2019) Video Abstract

Michael J. Ruiz, "Road Mirage Angle," Physics Education 54, 065009 (November 2019). pdf and Video Abstract

Patrick Foo (Department of Psychology) and Michael J. Ruiz, "Inexpensive Endoscope Activities," Physics Education 54, 055005 (September 2019). pdf and Video Abstract

Michael J. Ruiz, "Video of Scenery During a Total Eclipse: Luminance and Effects of Solar Limb Darkening," Physics Education 54, 035001 (May 2019). pdf and Video Abstract

Gerson Morales (UNCA Engineering Student at Time of Research), James Perkins, Herb Pomfrey, and Michael J. Ruiz, "Accurate Pinhole Camera Apertures Using Insect Pins," Physics Education 54, 025002 (March 2019). pdf and Video Abstract

Rob Berls (Department of Drama) and Michael J. Ruiz, "Reply to Comment on 'Lenz's Law with Aluminum Foil and a Lengthwise Slit'," Physics Education 54, 016502 (January 2019).

James Perkins and Michael J. Ruiz, "A Reliable Wave Convention for Oppositely Traveling Waves," The Physics Teacher 56, 622 (December 2018). pdf

Michael J. Ruiz and Lowell Hobbs (UNC Asheville Music Student), "Inharmonic Spectra with a Rock Guitar Effects Pedal," The Physics Teacher 56, 504 (November 2018). pdf and Video Abstract

Chloe Hawes (High School Student at North Carolina School of Science and Mathematics = NCSSM) and Michael Ruiz, "Swinging Beam of Beads Transforming into a Simple Pendulum of the Same Length," Physics Education 53, 065015 (November 2018). pdf and Video Abstract

Michael J. Ruiz, "Lissajous Figures, Musical Intervals, and the Just Diatonic Scale," The Physics Teacher 56 424 (October 2018). pdf and Video Abstract and The App

Michael J. Ruiz, "Depth of Field and the Vanishing Fence," Physics Education 53, 055015 (September 2018). pdf and Video Abstract

Nicholas Konz (UNC Chapel Hill Physics Student) and Michael J. Ruiz, "Amplitude, Frequency, and Timbre with the French Horn," Physics Education 53, 045004 (July 2018). pdf and Video Abstract

Rob Berls (Department of Drama) and Michael J. Ruiz, "Lenz's Law with Aluminum Foil and a Lengthwise Slit" Physics Education 53, 045001 (July 2018). Video Abstract

Christine Boone (Department of Music), Melodie Galloway (Department of Music), and Michael J. Ruiz, "Fun with Singing Wine Glasses" Physics Education 53, 035025 (May 2018). pdf and Video Abstract

Michael J. Ruiz and David Wilken (former UNC Asheville Music Professor, "Tuvan Throat Singing and Harmonics," Physics Education 53, 035011 (May 2018). pdf and Video Abstract

Michael J. Ruiz, "Clash of Harmonics in Stravinsky's The Rite of Spring," The Physics Teacher 56, 214 (April 2018). pdf and Video Abstract

Michael J. Ruiz, "Free Sixteen Harmonic Fourier Series Web App with Sound," Physics Education 53, 025008 (March 2018). pdf and The App

Dolores Eggers (Department of Environmental Studies) and Michael J. Ruiz, "Investigating the Effect of Multiple Layers of Insulation with a Bubble Wrap Experiment," Physics Education 53, 023001 (March 2018).

Christa R. Michel (Daughter and Doctorate in Music, Jacobs School of Music, Indiana University) and Michael J. Ruiz, "The Physics of Singing Vibrato," Physics Education 52, 045010 (July 2017). Video Abstract

Edward Ball, Frances Ruiz (Daughter), and Michael J. Ruiz, "Free Oscilloscope Web App Using Computer Mic, Built-In Sound Library, or Your Own Files," Physics Education 52, 045006 (July 2017). pdf and Video Abstract and The App

Erika Boysen (UNC Greensboro Department of Music) and Michael J. Ruiz, "Flute Physics from a Flutist's Perspective," Physics Education 52, 045004 (July 2017). Video Abstract

Michael J. Ruiz, "Hearing the Transformation of Conical to Closed-Pipe Resonances," Physics Education 52, 033012 (May 2017). pdf and Video Abstract and The App

Michael J. Ruiz, "Students Dance Longitudinal Standing Waves," Physics Education 52, 033006 (May 2017). pdf and Video Abstract

Bud Holmes (Tuba Player and Physics Office Assistant) and Michael J. Ruiz, "Twenty-Four Tuba Harmonics Using a Single Pipe Length," Physics Education 52, 025005 (March 2017). Video Abstract

Michael J. Ruiz and Erika Boysen (UNC Greensboro Department of Music), "Flutist Produces Four Resonances with a Single Bottle," Physics Education 52, 025003 (March 2017). Video Abstract

Michael J. Ruiz and James Perkins, "The Monster Sound Pipe," Physics Education 52, 025002 (March 2017). Video Abstract Chosen by the Editors as a Highlight of 2017.

Edward Ball (Programmer in England) and Michael J. Ruiz, "Using a New, Free Spectrograph Program to Critically Investigate Acoustics," Physics Education 51, 065025 (November 2016). Video Abstract and The App

Michael J. Ruiz, "The '2001' Theme on the Whistling Tube," in Little Gems, Column Editor Christopher Chiaverina, The Physics Teacher 54, 310 (May 2016). pdf and Video

Michael J. Ruiz and James Perkins, "Tungsten Filament Fire," Physics Education 51, 03301 (May 2016). pdf and Video Abstract

Michael J. Ruiz, "Astronomy and the Weak Interaction," in AstroNotes, Column Editor Joe Heafner, The Physics Teacher 54, 122 (February 2016). pdf

Frances Ruiz (Daughter) and Michael J. Ruiz, "Color Addition and Subtraction Apps," The Physics Teacher 53, 423 (October 2015). pdf and the apps

Halima Flynt (UNC Asheville Art Student) and Michael J. Ruiz, "Making a Room-Sized Camera Obscura," Physics Education 50, 19 (January 2015). Chosen by the Editors as a Highlight of 2015. pdf and Video Abstract

William Michel (Violin Graduate Student, Jacobs School of Music, Indiana University) and Michael J. Ruiz, "The Fourth Harmonic and Sibelius," Physics Education 49, 149 (March 2014). pdf and Video Abstract

Michael J. Ruiz, "Boomwhackers and End-Pipe Corrections," The Physics Teacher 52, 73 (February 2014). pdf Copyright The Physics Teacher AIP Citation

Lydia Zimmer Johnson (UNC Asheville Creative Writing Student) and Michael J. Ruiz, "A Revelation in Colour and Sound," Physics Education 48, 10 (January 2013). Chosen by the Editors as a Highlight of 2013. pdf

M. J. Ruiz, "Kinematic Measurements from YouTube Videos," The Physics Teacher 47, 200 (April 2009). pdf

M. J. Ruiz, "A Black Hole in Our Galactic Center," The Physics Teacher 46, 10 (January 2008), featured on the pdf

M. J. Ruiz and Jeremy Abee (UNC Asheville Music Student), "Doppler Football," The Physics Teacher 44, 440 (October 2006). pdf

M. J. Ruiz, "Aliens or the SR-71 Blackbird?" The Physics Teacher 44, 229 (April 2006). pdf

M. J. Ruiz, "Lenz's Law Magic Trick," The Physics Teacher 44, 96 (February 2006). pdf

M. J. Ruiz, "Car Hits Boy on Bicycle," Physics Education 40, 556 (No. 6, November 2005). pdf

M. J. Ruiz, "Don't Look at the Sun," Physics Education 40, 411 (No. 5, September 2005). pdf. High resolution jpg file (710 kB jpg) of figure 1, showing a retina damaged by viewing the Sun, courtesy Dr. Mark Clark, photo by Dr. Charles Hunter, Anderson, SC, USA.

M. J. Ruiz, "Prescribing Eyeglasses for Myopia and Hyperopia," The Physics Teacher 43, 88 (February 2005), featured on the cover of the journal issue. pdf

M. J. Ruiz, "Kepler's Third Law Without a Calculator," The Physics Teacher 42, 530 (December 2004). pdf

Publication of Imagery (designed by student Terry Robinson, photo by John Warner) from "Illusions with Plane Mirrors," (featured in 1987 on the cover of The Physics Teacher, M. J. Ruiz and T. Robinson). Republished as one of the color plates in the text by T. D. Rossing and C. J. Chiaverina, Light Science: Physics and the Visual Arts (Springer-Verlag, New York, 1999).

E. Katz, M. Moseley, T. Rizzo, and M. J. Ruiz, eds., The Modern World: Mid-17th to Mid-20th Century (Pegasus Press, Asheville, 1999), humanities reader-textbook for Humanities 324.

M. J. Ruiz, "Light and Visual Phenomena," in Tom L. Hall, Utilizing Multimedia ToolBook 3.0 (Boyd & Fraser, Danvers, MA, 1996), p. 347, plus the software appearing on the accompanying CD ROM.

M. J. Ruiz and M. A. Ruiz (graphics artist), "Constellation Tutor," in Tom L. Hall, Utilizing Multimedia ToolBook 3.0 (Boyd & Fraser, Danvers, MA, 1996), p. 348, plus the software appearing on the accompanying CD ROM.

M. J. Ruiz and E. M. Ruiz, "Prototype for Music Ear-Training," in Tom L. Hall, Utilizing Multimedia ToolBook 3.0 (Boyd & Fraser, Danvers, MA, 1996), p. 349, plus the software appearing on the accompanying CD ROM.

J. G. Stevens and M. J. Ruiz, "Mössbauer Spectroscopy," in The Encyclopedia of Advanced Materials, edited by Robert W. Cahn (Pergamon Press, New York, 1994).

M. J. Ruiz, "Interactive Graphics Software for the General Student in an Optics course," p. 485 in 101 Success Stories of Information Technology in Higher Education (McGraw Hill, New York, 1992).

M. J. Ruiz, "Book Review: What Light Through Yonder Window Breaks? More Experiments in Atmospheric Physics" by Craig F. Bohren, American Journal of Physics 60, 381, (April 1992).

"EDUCOM Spotlights Classroom Technology: Consortium Identifies 101 Examples of Technology Used Successfully on Campuses," The Chronicle of Higher Education, October 16, 1991, p. A26 (see p. A35 for Ruiz abstract).

M. J. Ruiz, "Interactive Graphics Software for the General Student in an Optics Course," p. 17 in The Joe Wyatt Challenge (EDUCOM/EUIT, Washington, DC, 1991), abstracts of the 101 awards given in the nation for innovations of use of technology in higher education.

M. J. Ruiz, Abstract: "Botanical Gardens Software Package," Masters of Innovation II, p. 232 (Zenith Data Systems, Mount Prospect, Illinois, 1990).

M. J. Ruiz, "Interactive Optics Software for the General Student," Tools for Learning: Agenda IBM Academic Computing Conference, June 19-21, 1990, (IBM Academic Information Systems, Milford, Connecticut, 1990).

M. J. Ruiz, "Interactive Optics Software for the General Student," The Conference on Computers in Physics Instruction Proceedings, edited by E. F. Redish and J. S. Risley, 125 (Addison-Wesley, Redwood City, CA, 1990).

M. J. Ruiz, "Orthogonality Relation for Covariant Harmonic-Oscillator Wave Functions," Physical Review D 10, 4306 (1974), republished in its entirety in M. E. Noz and Y. S. Kim (eds.) Special Relativity and Quantum Theory, p. 265 (Kluwer Academic Publishers, The Netherlands, 1988).

M. J. Ruiz, Book Review: "An Attractive Optics Text for The General Student," Seeing the Light: Optics in Nature, Photography, Color, Vision, and Holography by Falk, Brill, and Stork (Harper & Row, NY, 1986), The Physics Teacher 26, 252 (1988).

M. J. Ruiz, "The Human Body's Response to Glucose and Three Physical Models," American Journal of Physics 55, 641 (July 1987). pdf

M. J. Ruiz and T. L. Robinson (UNCA Music Student), "Illusions With Plane Mirrors," The Physics Teacher 25, 206 (April, 1987). pdf

The theoretical derivation in M. J. Ruiz, "Orthogonality Relation for Covariant Harmonic-Oscillator Wave Functions," Physical Review D 10, 4306 (1974) reproduced in Y. S. Kim and M. E. Noz, Theory and Applications of the Poincaré Group, p. 130 (D. Reidel, Boston, 1986).

M. J. Ruiz, "Fine Structure of Quarkonium in the Covariant Harmonic-Oscillator Quark Model," Physical Review D 33, 1640 (1986). pdf

J. G. Stevens and M. J. Ruiz, "Mössbauer Spectroscopy," in Encyclopedia of Material Science and Engineering, edited by Michael B. Bever, 3117 (Pergamon Press, New York, 1986).

M. J. Ruiz, "Modular Synthesizers," The Physics Teacher 23, 138 (March 1985), an invited article. pdf

M. J. Ruiz, "Nonstrange Hyperfine Splitting in the Relativistic Harmonic-Oscillator Quark Model," Physical Review D 30, 683 (1984). pdf

M. J. Ruiz, "Another Look at the Roche Limit," Physics 13 News (October 1983), published by the Physics Department of the University of Waterloo, Ontario, Canada and distributed internationally.

J. G. Stevens and M. J. Ruiz, "Mössbauer Spectroscopy," Chapter 6 in Treatise on Analytical Chemistry Part I, Volume 10 Theory and Practice, 2nd ed., edited by P. J. Elving, M. M. Bursey, and I. M. Kolthoff, 439 (John Wiley, New York, 1983).

M. J. Ruiz, "Camera Optics," The Physics Teacher 20, 372 (September 1982), an invited article and cover article. pdf

M. J. Ruiz, "The Teleconverter Problem," American Journal of Physics 49, 1006 (November 1981).

M. J. Ruiz, "The Physics of Visual Acuity," The Physics Teacher 18, 457 (September, 1980); "Visual Activity Revisited," The Physics Teacher 18, 560 (November 1980), a letter to the Editor. pdf

M. J. Ruiz, "Covariant Harmonic Oscillators and the Axial-Vector Coupling Constant," Physical Review D 12, 2922 (1975). pdf

M. J. Ruiz, "Orthogonality Relation for Covariant Harmonic-Oscillator Wave Functions," Physical Review D 10, 4306 (1974). pdf