Literaturnachweis - Detailanzeige
| Autor/inn/en | Killian, Benjamin J.; Singletary, Steven |
|---|---|
| Titel | Modernizing the Speed of Sound in a Spherical Resonator Experiment |
| Quelle | In: Journal of Chemical Education, 99 (2022) 3, S.1468-1472 (5 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Zusatzinformation | ORCID (Killian, Benjamin J.) |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0021-9584 |
| DOI | 10.1021/acs.jchemed.1c01084 |
| Schlagwörter | Undergraduate Study; College Science; Chemistry; Physics; Laboratory Experiments; Science Experiments; Science Instruction; Acoustics; Laboratory Equipment; Computer Peripherals; Computer Uses in Education; Mathematics |
| Abstract | We present a modernization of the undergraduate physical chemistry laboratory experiment for determining the speed of sound in various gases from resonant frequencies in a spherical resonator. The resonator (schematic IR = 7.5 cm) is constructed by 3D printing with eco-friendly poly(lactic acid), a commercially viable alternative to traditional construction methods. We provide a schematic stereolithographic CAD file for printing the cavity and Octave (or MATLAB) code for the fast Fourier transform of time-based signals to the frequency domain. Student results for argon, air, carbon dioxide, and R-134A refrigerant show excellent agreement with published values, with less than ±0.2% error in most cases. This module provides an introduction to and practical example of the use of 3D printing technology and fast Fourier transform algorithms in the undergraduate chemistry lab. (As Provided). |
| Anmerkungen | Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2024/1/01 |
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