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¦]¦¹¡M¦]¬°³£´¶«k®ÄÀ³¡A¨t²Î¥²¶·¥Dn´²µo¥X¤@¤j±o¦hªº¥úL¡C®Ú¾Ú¥ñ¯S©MÀ¹ºû´µ(Forward and Davis),
ì«h¤W¥i²£¥ÍÁ`±j«×L=75000 TW ªº¥ú§ô¡A¨Ï±oL¡¦=43000 TW. (¥ñ¯S©MÀ¹ºû´µ(1986))]. §Ú̪º¤ÓªÅ²îªì³t¬°
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§ÚÌÁ`µ²¨Ó¦Û²Ä¤@(¥[³t) ©M²Ä¤G¤p¸` (Âà°Ê):
¥[³t¶ZÂ÷¬O4.41 . 1015 m,
²Ä¤G¶¥¬q(¤£Åܳt) 9.46 . 1016 m,
²Ä¤T¶¥¬q (ÂàÅs) 7.76 . 1015 m
©M«b¨îªº¶ZÂ÷4.41 . 1015 m (¦P²Ä¤@¶¥¬q).
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2 . 4.41 . 1015 m + 9.46 . 1016 m + 7.76 . 1015 m = 1.1118 . 1017 m ,
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t = 23.24 a .
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