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All Journal INPAFI (Inovasi Pembelajaran Fisika) Journal of The Physical Society of Indonesia
Jonny H. Panggabean
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Physics

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The Effectiveness Of Using Virtual Simulation Media With Macromedia Flash Combine With Experimental Method To Improve Students’ Learning Outcomes In Dynamics Electric’s Subject For The First Grade of SMAN 1 Perbaungan A.Y. 2012/2013 Jonny H. Panggabean; Fetriana Simanihuruk
INPAFI (Inovasi Pembelajaran Fisika) Vol 1, No 2 (2013): INPAFI
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.147 KB) | DOI: 10.24114/inpafi.v1i2.2018

Abstract

ABSTRAK of using virtual simulation media with macromedia flash combine with experimental method to improve students’ learning outcomes in dynamics electric’s subject for the first grade of SMA N 1 Perbaungan A.Y. 2012/2013. The research method was quasi experimental. The population were all students at  X class consist of 8 classes SMA N1 Perbaungan. The sample of this research conduct two classes and consist of 79 students, here class X2 as experiment class and class X3 as control class and define by random cluster sampling. The results that were obtained: post-test mean value of the experimental class was 79.23 and 67.50 was the mean value for control class. Standard deviation for two classes were 10.04 and 11.27. Normality test result from the both samples was normal and homogenous, the testing criterion was accept H0 if -1.67 < t’ < 1.67 and refuse Ho in other condition. Here, H0 was refused because t’ is 4.88 and Ha was accepted. And the other side, the gain of experimental class (0.7) is higher than control class (0.4) with the activity of students was 67.27. So that there was the effectiveness of using virtual simulation media with macromedia flash combine with experimental method to improve students’ learning outcomes in dynamics electric’s subject for the first grade of SMA N 1 Perbaungan.   The Key words: Learning Outcomes, Virtual Simulation Media, Macromedia Flash
The Effect of Quartz Sand on Structural and Optical Properties of Dy3+ Doped P2O5-CaO-BaO-Gd2O3 Glasses Panggabean, Jonny H.; Br Sembiring, Novita Madalena; Simanullang, Elyzabeth; Rajagukguk, Juniastel; Sarumaha, C.S.; Kaewkhao, J.
Journal of the Physical Society of Indonesia Vol. 1 No. 2 (2025): October 2025
Publisher : The Physical Society of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35895/jpsi.1.2.136-144.2025

Abstract

This study investigates the influence of quartz sand incorporation on the structural and optical properties of Dy³⁺ doped P₂O₅–CaO–BaO–Gd₂O₃ phosphate glasses. The glass samples were synthesized using the conventional melt-quenching technique, with varying concentrations of quartz sand as a partial substitution of P₂O₅. Structural characterization was carried out using X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, which confirmed the formation of an amorphous glass network and the presence of phosphate, silicate, and modifier-related vibrational bands. The optical absorption spectra, recorded via UV–Vis spectroscopy, revealed characteristic f–f transitions of Dy³⁺ ions, indicating their successful incorporation into the glass matrix. The intensity ratio of yellow to blue emission was found to be influenced by the quartz sand content, suggesting a significant role of SiO₂ in modifying the local environment around Dy³⁺ ions. These results highlight the potential of quartz-sand-modified phosphate glasses as promising candidates for photonic and luminescent device applications.
Co-Authors Br Sembiring, Novita Madalena Fetriana Simanihuruk J. Kaewkhao, J. Juniastel Rajagukguk, Juniastel Sarumaha, C.S. Simanullang, Elyzabeth