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All Journal Edufisika: Jurnal Pendidikan Fisika Schrödinger: Journal of Physics Education
Ria Ambarwati
Universitas Jambi
Education Physics Social Sciences Other

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PENENTUAN EMISI RADIASI TERMAL PADA BERBAGAI JENIS BAHAN Almahdi Mousa; Sri Purwaningsih; Hikmah Ziarah; Ria Ambarwati; Romacos Fardela
EduFisika: Jurnal Pendidikan Fisika Vol 8 No 3 (2023): EduFisika: Jurnal Pendidikan Fisika Volume 8 Nomor 3 December 2023
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59052/edufisika.v8i3.29625

Abstract

The research aims to measure and compare the amount of thermal radiation emitted by various materials with different colors and textures, and to calculate the emissivity of each material. Experiments were carried out using four surface variations of the cube. The results show that the black surface of the Leslie cube emitted the most thermal radiation, followed by the dull, shiny, and white surfaces. The average value of thermal radiation output for each surface was 3.4 mV for black material, 1.6 mV for white material, 2.4 mV for shiny colored materials, and 2.8 mV for dull colored materials. The amount of power obtained for each surface was 1.9 x 10-8 Watts, 0.87 x 10-8 Watts, 1.3 x 10-8 Watts, and 1.6 x 10-8 Watts, respectively. The emissivity of each material, which is the ratio of the thermal radiation emitted by the material to that of a black body at the same temperature, was 1, 0.458, 0.684, and 0.842, respectively. Based on the sensor output value, it can be concluded that black cloth is the most effective material in transmitting thermal radiation energy compared to glass, cardboard, and styrofoam. The research also provides empirical data and calculations of the thermal radiation and emissivity of different materials, which can be used for further analysis and applications. The research contributes to the literature on physics education and thermal radiation by demonstrating a practical and engaging way of teaching and learning the concept of thermal radiation using a Leslie cube.
Analysis of High School Students' Learning Discipline in Physics Learning Ria Ambarwati; Elwells B. Ulla; Mehdi Tajaddini
Schrödinger: Journal of Physics Education Vol. 4 No. 4 (2023): December
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/sjpe.v4i4.764

Abstract

Purpose of the study: This research was conducted with the aim of finding out students' disciplinary attitudes towards physics subjects in high school. Methodology: This research uses a mixed methods explanatory design. The sampling technique uses simple random sampling. The number of samples in this study was 120 high school students. Data collection techniques used questionnaires and interviews. Data analysis uses descriptive statistics and miles and miles model. Data analysis in this research uses a quantitative approach using the SPSS program. Main Findings: It was found that student discipline was categorized as good and quite good. So, stimulus treatment from the teacher is needed to increase student learning discipline. The implication of this research is that it can help teachers and educational stakeholders to understand the factors that influence student learning discipline in Physics subjects. With better understanding, they can develop more effective learning strategies to increase student motivation and engagement. Novelty/Originality of this study: The novelty of the research may provide a better understanding of the dynamics of student learning in physics, enabling the development of more effective learning strategies
Co-Authors Almahdi Mousa Elwells B. Ulla Hikmah Ziarah Mehdi Tajaddini Ramacos Fardela Sri Purwaningsih