International Journal of Physics
ISSN (Print): 2333-4568 ISSN (Online): 2333-4576 Website: Editor-in-chief: B.D. Indu
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International Journal of Physics. 2021, 9(4), 218-221
DOI: 10.12691/ijp-9-4-5
Open AccessArticle

Logger Pro for the Observation of Single-Slit Diffraction in the Determination of Metal Coefficients of Linear Thermal Expansion

Raden Oktova1,

1Physics Education Department, Faculty of Teaching and Education, Ahmad Dahlan University, Campus IV, Ring Road Selatan, Tamanan, Banguntapan, Bantul, Yogyakarta 55191, Indonesia

Pub. Date: July 22, 2021

Cite this paper:
Raden Oktova. Logger Pro for the Observation of Single-Slit Diffraction in the Determination of Metal Coefficients of Linear Thermal Expansion. International Journal of Physics. 2021; 9(4):218-221. doi: 10.12691/ijp-9-4-5


Experiments using Logger Pro-aided observation of single-slit diffraction patterns have been performed to determine coefficients of linear thermal expansion of metals. The sample metals were iron and brass. The calculation involves weighted linear regression analysis of 1/z against temperature, where z is the distance between the end to the center of the central bright line, and a computer-aided χ2 goodness of fit test. From the χ2 goodness of fit test, it is concluded that the relation between 1/z and temperature is linear, in agreement with theory. The coefficients of linear thermal expansion for iron obtained agree well with the reference value, while that for brass is close to the reference values.

Logger Pro coefficient of linear thermal expansion; metals single-slit diffraction weighted linear regression analysis χ2 goodness of fit test

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