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A Comparison of The Effectiveness of Hollow Prism and Parallel Plans The Measurement of Fludia's Refresh Index: Case Study On Aquades and Alcohol Rizqi Fajar Shidiq; Indira Gustaviana Nugroho; Irfan Daniel; Fuji Hernawati Kusumah; Rabina Amara Yusra; Ahmad Suryadi
Jurnal Multidisiplin Indonesia Vol. 1 No. 2 (2023): Juni : Jurnal Multidisiplin Indonesia
Publisher : PT. ALHAFI BERKAH INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62007/joumi.v1i2.225

Abstract

A refractometer is a tool used to measure the refractive index of fluids. However, there are several issues, including the considerable cost involved and the fact that not all school laboratories have this tool. Therefore, we conducted a study to compare the accuracy of refractive index values using a hollow prism and a plan parallel prism. Among the various methods available today, refraction is a relatively simple and cost-effective method for determining the refractive index of fluids. In measuring the refractive index of fluids, the use of containers or vessels is essential. Following a review of existing studies, two commonly used types of vessels were identified: the cube-shaped vessel (plan parallel) and the hollow prism. This research aims to compare the refractive index results obtained using a hollow prism and a plan parallel prism, using two samples—namely, distilled water (aquades) and alcohol—which have predetermined values in the refractive index table. The results indicate that the refractive index value for aquades using a plan parallel prism is 0.97, while with a hollow prism, it is 1.33, where the true refractive index value is 1.33. For alcohol, the results using a plan parallel prism are 0.91, and with a hollow prism, it is 1.35, where the true refractive index value is 1.36. The conclusion drawn is that using a hollow prism yields refractive index values for both aquades and alcohol that closely approximate the true refractive index, compared to the use of a plan parallel prism.
Virtual Reality Effect on Student Learning Outcomes in Nuclear Physics and Radioactivity Topics Indira Gustaviana Nugroho; Rizqi Fajar Shidiq; Taufiq Al Farizi; Reza Ruhbani Amarulloh
Jurnal Penelitian Pembelajaran Fisika Vol. 16 No. 4 (2025): In Progress
Publisher : Program Studi Pendidikan Fisika, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jp2f.v16i4.2832

Abstract

Learning Nuclear Physics and Radioactivity is often perceived as difficult by student because the concepts are abstract, thus requiring learning media that can visualize these concepts more concretely. This study aims to analyze the effect of using Virtual Reality media on student’s learning outcomes in the topic of Nuclear Physics and Radioactivity. The research employed a Quasi Experimental method with a Nonequivalent Control Group Design. The subject were 33 12th grade students of Al Adzkar High School, divided into two groups: an experimental group and a control group. The research instrument consisted of 20 multiple-choice questions mesuaring cognitive abilities from levels C2 to C6. The result indicated a significant difference between the control and experimental groups. The average post-test score of students in the experimental class (76.47) was higher than that of the control class (69.06). Improvement in learning outcomes was also reflected in the N-Gain score, which reached 0.57 (medium category) for the experimental class and 0.38 (medium category) for the control class. The analysis of cognitive indicators showed that improvement in the experimental class was more evenly distributed compared to the control class. Therefore, the use of Virtual Reality has been proven to enhance students learning outcomes by providing a more interactive and engaging learning experience, making it a potential alternative medium for classroom instruction.