Dr. Chin-Jung Chuang Profile

Dr. Chin-Jung Chuang

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Proceedings Article | 16 August 2017 Open Access

Ball game watching theory in the teaching site

Shugang Liu, Xiufang Li, Chin-Jung Chuang

Proceedings Volume 10452, 104521N (2017) https://doi.org/10.1117/12.2269383

KEYWORDS: Multimedia

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Lecturing is a common approach in the traditional teaching site. In this paper, we bring a modern model “ball game watching theory” to explain the situation in the classroom. The reason why the audiences going to the court is to enjoy the atmosphere, and it is also the reason why student joining to the class. A successful class running is to create studious atmosphere. However, once the teacher does the demo in the class, the multimedia tool must be used to show the details, as the big display working in the court. The key moment is recorded and the details are magnified. when teaching aids are demonstrated, the multimedia tool plays an important role. The attention of students walks between the teacher and the display. In this ball game watching theory, the demonstrate experience is like the ball game, and the teacher works as an anchor. By following the demonstration proceeding, students build the knowledge by themselves. In addition, the demonstration must be designed to be interesting in order to make the class proceed fluently. The similarity between the ball game watching and the class will be discussed. Finally we suggest a modern class design which can raise learner motivation and achievement.

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Proceedings Article | 8 October 2015 Open Access

Modulation of visualized electrical field

Chin-Jung Chuang, Chi-Chung Wu, Yi-Ting Wang, Shiuan-Hau Huang

Proceedings Volume 9793, 979314 (2015) https://doi.org/10.1117/12.2223099

KEYWORDS: Polarization, Visualization, Polarizers, Modulation, Optical components, Wave plates, Optical activity, Electromagnetism, Birefringence, Liquid crystals

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Polarization is an important concept of electromagnetism, and polarizers were traditionally applied to demonstrate this concept in a laboratory. We set up a optical system with the optical component “axis finder” to visualize the polarization direction immediately. The light phenomena, such as birefringence, circular polarization, and Brewster’s angle, can be examined polarization visually. In addition, the principle of different waveplate and optical axis can be presented in a straightforward approach. By means of image analysis, the great precision of polarizing direction can be measured up to 0.01 degree.

Modulated polarized light is applied to a few optical devices, like Liquid-crystal display. It is marvelous to trace the light polarization between the backlight module, polarizer, and panel. As seeing is believing, the visualized electrical field allows educators to teach polarization in a smooth and strikingly manifest manner. Without any polarizer and analyzer, we examine the rotary power of different concentration syrup, presenting the relationship with polarization change. We also demonstrate the wide application of polarization light in modern life, and examine the principle through this visualized electrical field system.

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