Schrödinger: Journal of Physics Education

New Method of Estimation of the Speed of Light in Vacuum Using Q-Values of Beta-Décay-Transitions in Mirrors Nuclei

Ibrahima Sakho — 2025-03-09

Purpose of the study: The goal of this work is to present a new method named Q-b-decay theory to estimate the speed of light. Our result is compared with the earlier estimations since the first measurement of Roemer in 1676 up to 2022, the latter being measured experimentally by picosecond laser technology.

Methodology: This research is based on an estimation of the speed of light in vaccum. This speed is expressed in terms of the Q-value of b⁺- decay transitions in mirrors nuclei in the framework of the nuclear model with a nucleon constant density. The speed of light is calculated using the experimental Q-values of ³⁷K and ⁶⁵As miroirs nuclei.

Main Findings: The research gives the result c = 299 791 777 m/s agreeing excellently with the exact value 299 792 458 m/s with an accuracy at 0.000 23 %. This result shows that the speed c of light is obtained accurately from nuclear properties instead of light properties or electric and magnetic constants. A useful appendix for students details the methods of Roemer, Bradley, Fizeau, and Foucault along with the equations allowing one to calculate the speed of light they found.

Novelty/Originality of this study: Estimating the speed c of light with a high accuracy using a new method based on the properties of b⁺- decay transitions in mirrors nuclei. As far as we know, it the first time that the speed of light is accurately estimated via a non-optical method 348 years ago since 1676.

Enhancing Conceptual Understanding of Electric Circuit Analysis through the Jigsaw Method: A Quasi-Experimental Study in Senior High Schools

Isaac Kwesi Acquah — 2025-03-16

Purpose of the study: This study examines the effectiveness of the Jigsaw cooperative learning method in improving Form 1 students' understanding of electric circuit analysis, problem-solving skills, and its impact compared to traditional teaching.

Methodology: A quasi-experimental pre-test and post-test design was employed, involving 87 students from Obiri Yeboah SHS and Dadieso SHS. Over a one-week intervention, the Jigsaw method was integrated into regular physics lessons. Data were collected through tests and questionnaires administered before and after the intervention to assess the students’ knowledge and learning experiences. SPSS was used for statistical analysis, evaluating the effectiveness of the Jigsaw method in improving conceptual understanding.

Main Findings: The results demonstrated a significant increase in students' comprehension of electric circuits. At Obiri Yeboah SHS, the average score rose from 50.19 (pre-test) to 83.69 (post-test), and at Dadieso SHS, from 46.50 to 86.57. The Jigsaw method not only improved students' understanding of the subject but also enhanced their problem-solving abilities, communication skills, and motivation to learn. Statistical analyses, including t-tests and Cohen’s d, indicated a strong, significant effect size, reinforcing the method’s effectiveness.

Novelty/Originality of this study: This study provides compelling evidence of the Jigsaw method’s ability to enhance student performance and deepen conceptual understanding in science education, particularly in electric circuit analysis. The findings underscore the importance of cooperative learning techniques in promoting active participation, peer teaching, and higher levels of student engagement, suggesting that such strategies are critical for fostering more interactive and impactful classroom experiences.

Exploring the Utilization of ICT in Physics Learning at Senior High Schools in Demak: Opportunities and Challenges

Dyah Catur Sulistyani — 2025-03-09

Purpose of the study: This study aims to explore the use of ICT-based physics learning media by physics teachers in high schools in Demak Regency. In addition, this study identifies challenges and opportunities in the application of ICT to improve the quality of physics learning.

Methodology: This study uses a qualitative approach with a case study method. Data were collected through structured interviews using a questionnaire, as well as documentation related to ICT infrastructure. Purposive sampling technique was used to select two physics teachers and six students at State Senior High School 3 Demak. Data analysis refers to the Miles and Huberman model, which includes data reduction, data presentation, and drawing conclusions.

Main Findings: This study found that the use of ICT-based learning media in physics learning at State Senior High School 3 Demak can improve students' understanding of abstract concepts. Teachers used PowerPoint, learning videos, simulations, and digital platforms. The main challenges included limited ICT facilities, unstable internet connections, and teachers' diverse technological skills. Students showed positive responses to ICT-based learning, but still needed a combination of conventional methods. Adaptive strategies are needed to overcome the constraints of technology accessibility.

Novelty/Originality of this study: This study enriches the literature with an in-depth case study approach, reveals practical solutions in ICT integration, and emphasizes the importance of a combination of conventional and digital methods for learning effectiveness.

Integration of Health Law and Radiation Safety Aspects in the Medical Physics Curriculum for Radiotherapy Treatment

Ratna Widyaningrum — 2025-03-07

Purpose of the study: This study aims to analyze the legal regulations related to radiation safety in radiotherapy and develop a systematic approach to integrating health law and radiation safety aspects into the medical physics curriculum.

Methodology: A qualitative library research approach was used, analyzing journals, regulatory documents (WHO, IAEA, BAPETEN), and academic books through content analysis.

Main Findings: International and national regulations, including IAEA, ICRP, and BAPETEN, strictly govern radiation safety in radiotherapy, covering dose limits, exposure monitoring, and waste management. However, medical physics curricula lack structured integration of legal and safety aspects. A systematic curriculum model is proposed, incorporating progressive learning, practical simulations, clinical internships, and competency-based assessments to enhance student preparedness in radiation protection and regulatory compliance.

Novelty/Originality of this study: This study proposes a structured curriculum model linking technical and regulatory aspects through progressive learning, practical training, and industry collaboration, ensuring better radiation safety implementation in clinical practice.

Qualitative Analysis of the Implementation of Inquiry-Based Physics Learning Tools on Strengthening Character and Improving Learning Outcomes

Silvina Anjar Sari — 2025-03-18

Purpose of the study: This study aims to analyze the implementation of inquiry-based physics learning devices to support character strengthening and improve student learning outcomes.

Methodology: This study uses a qualitative approach with a case study design. The subjects of the study were students and teachers of grade XI majoring in natural sciences 2 of Sleman 2 State Senior High School, selected using purposive sampling technique. Data were collected through observation, interviews, and document analysis. Data analysis used the Miles and Huberman model with data reduction, data display, and drawing conclusions through triangulation.

Main Findings: Inquiry-based learning increases students' active engagement, understanding of physics concepts, and critical thinking skills. Students are more independent, creative, and demonstrate positive character traits such as honesty, discipline, and cooperation. Test results show significant improvements in academic achievement. This approach is effective in supporting character building and the development of 21st-century skills according to the Merdeka Curriculum.

Novelty/Originality of this study: This study reveals the effectiveness of inquiry-based physics learning devices not only in improving learning outcomes, but also in building students' character. This study provides new insights into the integration of character building in physics learning, in line with the Merdeka Curriculum, and shows how the inquiry approach can develop 21st century skills more holistically.