We have added two improvements to a self-luminous LED stroboscope (a flashing point-like projectile developed for introductory mechanics): downsizing by replacing heavy and risky batteries with a compact and safe capacitor of several Farads (a so-called Super-C) and wireless control via ordinary IR (infrared) communications. Consequently, the device allows the real-time visualization of velocity vectors to be performed using a web camera under ordinary room light. In this paper, we describe the technical details and also a typical demonstration by reference to our 15 min show at Osaka Science Museum that analyses the swing speed of a tennis racket on the spot. Q4

中文翻译：

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具有无线控制功能的紧凑型自发光 LED 频闪仪，用于速度矢量的实时可视化

我们对自发光 LED 频闪仪（一种为入门机械开发的闪光点状射弹）增加了两项改进：通过用几个法拉的紧凑且安全的电容器（所谓的 Super-C）代替笨重且危险的电池来缩小尺寸和通过普通 IR（红外线）通信进行无线控制。因此，该设备允许在普通室内光线下使用网络摄像机执行速度矢量的实时可视化。在本文中，我们通过参考我们在大阪科学馆进行的 15 分钟展示，现场分析网球拍的挥杆速度来描述技术细节和典型演示。第四季度