Which one vanishes? 那一個消失了?

Want to try a simple one? 先從較簡單的開始


   original ideal from "The Vanishing Leprechaun"


Your suggestions are highly appreciated! hwang@phy03.phy.ntnu.edu.tw
Dept. of Physics, National Taiwan Normal Univ. (Virtual Physics Laboratory)
歡迎提供建議或意見! 國立台灣師範大學 物理系 物理 教學/示範實驗 教室
Last modified at 最後修訂時間
  since 2011/06/20