網址 : http://picasaweb.google.com/u09850045/nUDfXD?feat=directlink
參考資料 : video.yahoo.com/atch/683801/3101051
http://www.flickr.com/photos/dans180/3282890111/
http://www.flickr.com/photos/zhouyutong/432087557/
http://www.flickr.com/photos/46097723@N00/145188034/
ronaldleechin.blogspot.com/2009/05/blog-post.html
http://memo.cgu.edu.tw/yunju/CGUWeb/PhyExp/Exp201Wave/Exp201Home07Bridge.htm
http://www.flickr.com/photos/hoayu/3279697024/
