Ex) Article Title, Author, Keywords
Ex) Article Title, Author, Keywords
Abstract : The purpose of this study is to analyze the inquiry process of science-gifted students using classical methods in relation to Galileo's inclined plane experiment and to assess their perception of classical experimental methods. The gifted students designed and conducted experiments using both classical methods, simulating the 17th-century context, and modern methods, utilizing video analysis techniques. The main research findings are as follows. First, the gifted students designed and conducted experiments using the classical method with time and travel distance as the main variables, employing pendulums, water clocks, constant velocity motion devices, and hourglasses as time measurement tools. Second, despite the presence of error factors due to uncertainty in human sensory perception or the limitations of measurement tools in the classical method, the experimental results are very successful. Third, many gifted students exhibited a positive shift in their perception of classical methods after the activity. Based on the findings of this study, the potential for integrating classical methods with modern methods is discussed.
Abstract : The electromagnets used in the 4th Generation electron Storage Ring (4GSR) require a higher field gradient than the conventional magnets facilitated in a machine. However, the magnetic field at the pole-tip saturates at the level of 1.3 T, resulting in the dilution of the operational efficiency. Therefore, a higher magnetic field gradient is only feasible by reducing the diameter of the magnet. However, as the diameter of the magnet decreases, the shape of the pole determines the higher-order term strongly, so it is essential to take account into the design of the magnet. In this presentation, we present an optimization strategy of the pole shape for the occasion of magnetic saturation using a 2D solver and Pymoo optimization algorithms using the Poisson Superfish code.
Abstract : As an essential feature of doing science or physics, inquiry and laboratory work have been emphasized as both pedagogical goals and strategies. The discussion on what constitutes physics inquiry and laboratory work has philosophical, cultural and historical aspects and also reflects the relatively recent development of science curriculum. In this paper, I have reviewed how the notion of science inquiry and laboratory work has changed and elaborated on the recent emphasis on scientific practices in doing physics. The review has shown that students’ doing science or physics entails their epistemic agency while participating in scientific practices and sensemaking. Following the review, I have presented an empirical analysis of middle school science teachers’ facilitation, or lack thereof, of students’ sensemaking during scientific practices. The analysis revealed several strategies that facilitated students' sensemaking during scientific practices and underscored the critical role of teacher noticing in supporting students’ sensemaking. Further research topics are suggested in the conclusion.
Abstract : We present a quantitative three-dimensional (3D) measurement technique with an extended axial range using a partial coherence digital holography microscope (DHM). This method enables the extraction of 3D information from specimens by analyzing the reconstructed amplitude images, which inherently contain optical path difference (OPD) data modulated by the degree of coherence in the hologram plane. By utilizing partial coherence illumination, the proposed DHM approach effectively mitigates coherence noise, allowing for precise 3D measurements even for samples with step heights exceeding the wavelength of the light source used. As a proof of concept, we conducted 3D measurements on a stepwise sample, demonstrating the capability of our method to resolve fine structural details and measure significant height variations. This technique offers significant advantages for applications requiring accurate 3D profiling in the presence of coherence noise and large step heights.
Abstract : Ion trap is emerging as one of the key techniques in the field of quantum computing due to its high precision and long coherence time. This review covers recent research trends in quantum computing technologies based on ion trap, discussing the technological advancements in the control and operation of quantum bits (qubits). We deal with quantum state preparation, Rabi oscillations, and decoherence suppression methods within ion trap systems. Additionally, the potential and commercialization prospects of ion trap for realizing next-generation quantum computers are examined, along with its contributions to enhancing the performance of quantum computers. Compared to other quantum computing implementations, ion trap offers remarkable accuracy and scalability, and it is expected to play a crucial role in the development of next-generation high-performance quantum computers.
Youngchun Jo, Haeyong Kang, Hyunkyung Lee, Jinho Jeon, Hyeonseop Lee, Kanghyun Kim
New Phys.: Sae Mulli 2024; 74(1): 25-34
https://doi.org/10.3938/NPSM.74.25
Sangwoo Ha
New Phys.: Sae Mulli 2023; 73(9): 734-749
https://doi.org/10.3938/NPSM.73.734
Min-Seong Kim, Nam-Hwa Kang
New Phys.: Sae Mulli 2023; 73(3): 256-265
https://doi.org/10.3938/NPSM.73.256