Jurnal Ilmiah Pendidikan Fisika Al-Biruni

Physics Concepts Based Data Centre Operations: A Medium for Education on Energy Efficiency and Technological Innovations

Stephen William Hughes, Peter Schouten — Mon, 30 Dec 2024 00:00:00 +0000

Data centres are considered the exclusive sites of information technology and computer science. However, many aspects of their day-to-day operation can be used to teach important concepts in physics, such as heat transfer, AC and DC power transmission, fibre optic transmission, energy loss in transmission cables, and electronic componentry. Data processing requirements and power usage in data centres are growing exponentially, and therefore, solutions need to be developed to reduce energy costs, given the challenges of global warming. To this end, work is being done on storing data in strands of DNA. An experiment to measure the change in temperature of air passing through an internet hub is described as a means of teaching students about the physics of data centres. The procedure and calculations shown in this particular experiment can be used and applied by secondary school physics students to evaluate the energy budget and efficiency of different data centres, such as those used at their school. In addition, this article details how students can make simple calculations that directly show how novel DNA data storage technology can be utilized to reduce the amount of hardware and power used at data centres. The potential for quantum computing to reduce the power requirements of data centres is also discussed.

Comparative Analysis and the Influence of Science Process Skills on Students' Digital Literacy on Measurement Materials

Astalini Astalini, Darmaji Darmaji, Dwi Agus Kurniawan, Miftahul Zannah Azzahra — Mon, 30 Dec 2024 00:00:00 +0000

This research aims to determine the comparison and influence of students' science process skills on students' digital literacy in measurement material. This research uses a quantitative type of research with an explanatory approach. The sampling technique used was purposive sampling with a sample size of 60 students. Data collection techniques in this research included observation sheets and questionnaires. The data analysis technique in this research uses descriptive statistical methods and inferential statistics. Based on the independent sample t-test results for science process skills and digital literacy of Al-Falah High School students in Jambi City, a Sig. (2-tailed) value less than 0.05 was obtained.. Thus, it can be concluded that there are differences in science process skills and critical thinking skills between students in classes X A and X B. According to the results of a simple linear regression test to see the effect of science process skills on students' digital literacy at Al-Falah High School in Jambi City, it can be concluded that for class X A, science process skills affect students' digital literacy, with an R Square value of 0.46, meaning that 46% of science process skills influence students' digital literacy. For class X B, science process skills also affect students' digital literacy, with an R Square value of 0.42, meaning that 42% of science process skills influence students' digital literacy. Based on hypothesis testing, it is known that there are differences in science process skills and digital literacy between students in classes X A and X B. In addition, students' science process skills influence digital literacy in measurement material.

Fast Forward Method On Landau-Majorana-Zener System

Albet Karuniawan, Iwan Setiawan, Dedy Hamdani — Mon, 30 Dec 2024 00:00:00 +0000

Quantum computers have data in the form of quantum bits (qubits), which are 0 and 1 simultaneously. This 0 and 1 state is the electron spin state on the quantum computer, namely spin up and spin down. Qubits are very sensitive to environmental disturbances, so it is necessary to accelerate the adiabatic dynamics so that the system's coherence is not disturbed by environmental interactions. These spin dynamics can be accelerated using the fast forward method, which uses an additional phase to drive the spin adiabatically. The adiabatic state is a state where the dynamics of a system have the same characteristics as the initial state after the dynamics take place. This research was conducted by qualitatively reviewing physical theory and conducting literature studies on previous research on the fast-forward method and the Landau-Majorana-Zener system. The results of this study obtained wave function solutions, regularization terms, and additional Hamiltonians in the Landau-Majorana-Zener system to accelerate adiabatic spin dynamics so that spin dynamics on quantum computers are not disturbed by the environment. After adding additional Hamiltonian adiabatic dynamics in the Landau-Majorana Zener system can be maintained but requires considerable energy. The magnetic field needed to create the same graph as the wave function graph before adding Hamiltonian, B₀ = 100 Tesla. The energy required to accelerate the adiabatic spin dynamics is large, so the cost is also quite large. Therefore, efforts are needed to minimize the energy required to accelerate the adiabatic spin dynamics.

Peer Instruction Using PhET Integrated with Inquiry-based Learning in Kinematics Physics Learning

Ogi Danika Pranata — Mon, 30 Dec 2024 00:00:00 +0000

This study investigates the impact of integrating peer instruction with PhET simulations and inquiry-based learning on physics education. Given the constraints of having only one class of 40 students, a one-group quantitative design was employed, complemented by a qualitative approach to create a mixed-method design. Quantitative analysis of pre-test and post-test results was performed using N-Gain, effect size, and paired samples t-test. Furthermore, qualitative analysis provided insights into students' learning experiences. The average N-Gain score initially showed a low increase (0.26), but excluding cases with negative gains revealed a moderate increase (0.38). The paired samples t-test confirmed a significant improvement in post-test scores compared to pre-test scores, with a large effect size (), demonstrating the effectiveness of the intervention. However, further analysis is needed to explore the distribution of student answers and underlying misconceptions. Some misconceptions were corrected, such as those related to distance, displacement, and velocity equations. However, kinematics graphs and vertical motion persisted. This finding underscores the urgency of refining teaching methods to address these persistent issues. The findings highlight the potential of this integrated approach to improve physics instruction and suggest that educators can use these insights to better support students' understanding of kinematics and graphical analysis.

Dosimetric Analysis of 6 MV Energy Photon Radiation Beam on Flatness and Symmetry on Linac in Radiotherapy Installation of UNAND Hospital

Rika Analia, Ramacos Fardela, Ridwan Ridwan, Fiqi Diyona, Afdhal Muttaqin — Mon, 30 Dec 2024 00:00:00 +0000

A dosimetric analysis of a 6 MV photon energy radiation beam on flatness and symmetry in LINAC radiotherapy at UNAND Hospital has been conducted. The aim was to measure the quality of the photon beam using an ion chamber cc 13 detector by observing the beam profile and analyzing the effect of field size and irradiation depth. This study used a blue phantom as the object of irradiation with 6 MV photon energy and variations in irradiation field size. The results showed that the PDD curve at 6 MV energy was by the international standard recommended by BJR-25. Then, the average values of flatness and symmetry in the field area of 10×10 cm² and 15×15 cm² are 1.6% and 2.4% for flatness and 2.3% and 1.9% for symmetry. Thus, the dose distribution is more uniform, and both the left and right sides of the profile on the center axis appear balanced, which will help deliver the dose to the patient better. Thus, these values are suitable for clinical use. This study found that the beam profile was larger on the left side of the main axis. This must be considered to ensure the dose distribution complies with the established safety standards. The results also show that variations in the field area and irradiation depth can affect the beam profile, and the resulting flatness and symmetry values are in accordance with the IAEA TRUS-381 and AAPM TG-142 recommendation standards, which are ±2% flatness and ±3% symmetry.

The Implementation of Learning Physics with the STEM-PBL Approach to Newton's Law Materials and its Application for Character Development

Dwi Yulianti, Fafi Masiroh — Mon, 30 Dec 2024 00:00:00 +0000

Globalization in the 21^st Century era has the opportunity to cause a decline in character. The government tries to strengthen student character through the Pancasila Student Profile. STEM (Science, Technology, Engineering, and Mathematics) based learning can facilitate student’s character. This study aims to describe the implementation of physics learning with STEM and its effect on student learning outcomes and character development. The research design employed was quasi-experimental, and the research sampling technique used was purposive sampling to determine two classes of tenth-grade students of MA Al Anwar Sarang. The experimental class integrated the STEM approach into each learning activity, and the control class used the scientific approach. Student character development was measured using observation sheets, and student learning outcomes were assessed by analyzing pretest and post-test scores. The findings of this study highlight the potential of integrating the STEM approach with Problem-Based Learning (PBL) to effectively teach Newton's Laws and develop student character. The medium-level improvement in learning outcomes (gain n = 0.399) and the high percentage of Pancasila student profile character development (81.33%) indicate that STEM-based physics learning supports academic and character-building objectives. These results suggest that optimizing all aspects of STEM integration, from learning tools to activities, is essential for fostering student character development in alignment with the Pancasila student profile. Additionally, implementing STEM-based physics learning sustainably over an extended period is recommended to enhance long-term learning outcomes and character formation

Enhancing Scientific Literacy Skills: Development of Physics Teaching Materials based on Islamic Values

Nurwati Nurwati, Helmi Abdullah, Pariabti Palloan — Mon, 30 Dec 2024 00:00:00 +0000

This research aims to develop valid physics teaching materials based on Islamic values, assess their practicality, and analyze their effectiveness in improving scientific literacy skills. This research was conducted at MAN 2 Bulukumba with 27 eleventh-grade class A students and 9 physics teachers as practitioners. This research employed the 4D development model: define, design, develop, and disseminate. The materials' validity was evaluated using Aiken’s V, focusing on content, presentation, language, and graphics, and were deemed valid and suitable for use. Practitioners rated the materials as very practical across all assessed aspects. Effectiveness was analyzed through pre- and post-implementation tests of students’ scientific literacy, yielding an N-gain of 67% (effective criteria). The study concludes that physics teaching materials based on Islamic values are valid, practical, and effective in enhancing students' scientific literacy. Integrating Islamic values into physics learning strengthens students' understanding of scientific concepts while fostering a holistic perspective that connects science with spiritual and moral dimensions. This integration also increases students' motivation by demonstrating the relevance of physics to their religious teachings, making science learning more engaging. Furthermore, it facilitates contextual teaching of physics concepts, particularly in environments rich in Islamic values.

Fostering 15–16-Year-Old Students’ Social Responsibility through a Physics E-worksheet: An ENACT Learning Model Intervention

Anggi Widiarni, Antomi Saregar, Rahma Diani, Adyt Anugrah, Masnaini Alimin — Mon, 30 Dec 2024 00:00:00 +0000

Education in the 21^st Century significantly emphasizes developing key competencies, including social responsibility. However, a substantial gap persists between students' theoretical understanding of social responsibility and its practical application, particularly in physics education. This study aims to develop a physics student worksheet based on the ENACT (Engage, Navigate, Anticipate, Conduct, and Take Action) learning model to foster social responsibility among students aged 15 to 16. This study employed the Research and Development (R and D) methodology and adopted the Borg and Gall development model (stages 1–7), involving validation by media and content experts and a practicality assessment. The sample comprised two teachers and 127 students from two public schools in Bandar Lampung, with data collection techniques including structured interviews, observations, and Likert-scale questionnaires. Validation results indicated high quality, with 92% from media experts and 94% from content experts, while practicality assessments yielded scores of 93% from teachers and 89% from students, categorizing the worksheet as highly practical. The teachers and students provided positive feedback, highlighting the worksheet's ease of use, relevance, engaging content, and potential to cultivate social responsibility among students. This study contributes to integrating digital technology into physics education by underscoring the role of interactive learning tools in fostering social responsibility. However, further research is recommended to examine the effectiveness of ENACT-based e-worksheets in diverse educational contexts and across different subject areas.

Measuring Environmental Awareness of Prospective Physics Teachers: Validation of an Environmental Attitude Instrument

Mon, 30 Dec 2024 00:00:00 +0000

Understanding environmental literacy is essential for prospective physics teachers to develop responsible behaviors in responding to environmental changes. However, assessing attitudes toward the environment remains challenging due to the limitations of existing instruments. This study evaluates the feasibility of an environmental affect instrument designed for prospective physics teachers in environmental physics courses. The research employed Thiagarajan’s 4D development model, which consists of four stages: define, design, develop, and disseminate. The instrument was validated by experts and users, with expert validation analyzed using Aiken’s V, user validity assessed through Pearson correlation, and reliability measured using Cronbach’s Alpha. Data analysis was conducted using Microsoft Excel and SPSS 16.0. The findings indicate that the developed instrument is highly valid, with an Aiken V value of 0.83 from expert validation. User validation resulted in 18 valid items and two invalid ones, while the reliability coefficient (Cronbach's Alpha) was 0.81, indicating high reliability. Consequently, 18 out of the 20 developed items are suitable for broader implementation. These findings provide a valuable tool for physics education lecturers and study programs in assessing students' environmental attitudes.

Griddle and Chimney Conductivity in a Husk Furnace: An Influence of Oxygen Flow and Orifice Size

Mon, 30 Dec 2024 00:00:00 +0000

This research investigates the effect of oxygen flow valve orifice size on the thermal conductivity of a small-scale industrial husk furnace's pan and chimney. The researchers used a water boiling test to the thermal conductivity at varying valve hole sizes: 3627 cm, 3634 cm, 4334 cm, and 5034 cm. The pan, crucial for direct contact with cooking ingredients, and the chimney, responsible for fire flow during combustion, play vital roles in heating. The chimney, constructed of clay and zinc, exhibited thermal conductivity values ranging from 0.52 to 0.59 W m⁻¹ °C⁻¹. The highest chimney thermal conductivity was observed at the 50x34 cm valve hole size, attributed to a smaller temperature difference between the inner and outer chimney surfaces. The pan's average thermal conductivity ranged from 2.95 to 4.10 W m⁻¹ °C⁻¹, with the highest value recorded at 5034 cm orifice. This finding suggests a direct relationship between the valve hole size, heat transfer rate, and the pan's thermal conductivity. The research reveals the influence of oxygen flow on heat transfer within the husk furnace, providing valuable insights for optimizing its design and efficiency. While the chimney's thermal conductivity remained relatively stable across different orifice sizes, the pan's conductivity showed greater variation, potentially indicating inconsistent heat distribution. Further research with more precise temperature measurement techniques is recommended to refine these findings.