最少蓋片面積

究竟黑盒壁是緊點白光面的邊界，還是與白光面的邊界留有空間？

2009-01-02 22:57:56 補充：

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參考資料：
my wisdom

2010-07-20 02:40:42 補充：
猛省，其實這題與http://www2.stetson.edu/~efriedma/circovcir很有關係，點解我當初搵唔到這個網站？

不過當然仍然都是沒有公式（事實上根據沒有可能找到公式），而且直到目前為止找到準確值的最大N值仍只是N = 12。

恐怕N和R的關係表示式會因N的不同而不同,很難甚至根本不能得出一個統一的公式,這類問題一般都很棘手,甚至專家亦不能完全解釋。

黑圓片可否重疊?

是白光面的邊界留有空間, 而且可以假設足夠地大.
即蓋片的邊可以越過白光面的邊界, 就算成塊出左都得.

2009-01-02 00:27:48 補充：
當然可以, 否則就不可能完全遮蓋

我認為當 N = 2 時, r 最小都是R
點證便唔知，因為我點放都放唔到

無可能完全遮蓋整個白底