A Novel Method to Measure the Thermal Diffusivity of Transparent Materials

Autor/inn/en	Lee, Wen-Tang; Lin, Fong-Feng; Lou, Yu-You
Titel	A Novel Method to Measure the Thermal Diffusivity of Transparent Materials
Quelle	In: Physics Education, 57 (2022) 5, Artikel 055015 (10 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-9120
Schlagwörter	Science Instruction; Heat; Scientific Concepts; Measurement Equipment; Light; Physics; Secondary School Science; High Schools; Science Experiments + Suchen Sie Ihr Suchwort? Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Hitze; Messinstrument; Licht; Physik; High school; Oberschule
Abstract	The refractive index of a liquid is known to depend strongly on the temperature gradient of liquids. When a laser beam passes through a transparent material going through thermal diffusion, the light projected onto a screen will be displaced in relation to the thermal diffusivity. A simple apparatus is used to measure the time evolution t of the laser beam displacement h and/vs. the position of the laser beam on the liquid container y whose liquid medium is going through thermal diffusion. Thermal diffusion dynamics can then be revealed. The thermal diffusivity of glycerol, ethanol, DI water, and NaCl aqueous solution has been measured. This simple procedure can demonstrate refractive index and thermal diffusivity in advanced high school physics courses. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01