{"id":24628,"date":"2016-06-06T00:53:35","date_gmt":"2016-06-05T16:53:35","guid":{"rendered":"https:\/\/case.ntu.edu.tw\/blog\/?p=24628"},"modified":"2018-08-03T14:44:50","modified_gmt":"2018-08-03T06:44:50","slug":"%e3%80%90%e5%9c%b0%e7%90%83%e7%a7%91%e5%ad%b8%e3%80%91%e5%9c%b0%e7%90%83%e6%9c%89%e9%a1%86%e5%b9%b4%e8%bc%95%e7%9a%84%e5%bf%83","status":"publish","type":"post","link":"https:\/\/case.ntu.edu.tw\/blog\/?p=24628","title":{"rendered":"\u3010\u5730\u7403\u79d1\u5b78\u3011\u5730\u7403\u6709\u9846\u5e74\u8f15\u7684\u5fc3"},"content":{"rendered":"

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\"\u5716\u7247\u4f86\u6e90\uff1awww.newscientist.com\"
\u5716\u7247\u4f86\u6e90\uff1awww.newscientist.com<\/figcaption><\/figure>\n

\u64b0\u6587\uff5c<\/strong>\u9673\u52c1\u8c6a<\/p>\n

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\u8003\u616e\u5730\u7403\u662f\u500b\u534a\u5f91\u70ba6400\u516c\u91cc\u7684\u5ca9\u77f3\u72c0\u7403\u9ad4\u3002\u5b78\u904e\u9ad8\u4e2d\u7269\u7406\u7684\u4eba\u5927\u6982\u90fd\u6709\u5370\u8c61\uff0c\u5982\u679c\u5047\u8a2d\u5730\u7403\u662f\u500b\u5be6\u5fc3\u7403\u9ad4\uff0c\u90a3\u9ebc\u5f9e\u5730\u5fc3\u5230\u5730\u8868\uff0c\u4e0d\u540c\u7684\u6df1\u5ea6\u5c31\u6703\u6709\u8457\u4e0d\u540c\u7684\u91cd\u529b\u5834\u3002\u63db\u53e5\u8a71\u8aaa\uff0c\u5730\u5fc3\u8ddf\u5730\u8868\u6240\u53d7\u5230\u7684\u91cd\u529b\u5834\u5176\u5be6\u4e0d\u4e00\u6a23\u5f37\u3002\u6839\u64da\u9019\u500b\u6982\u5ff5\uff0c\u8457\u540d\u7684\u7269\u7406\u5b78\u5bb6\u8cbb\u66fc\u66fe\u7d93\u4f30\u8a08\u5730\u5fc3\u6bd4\u5730\u8868\u7684\u5e74\u7d00\u5927\u6982\u5e74\u8f15\u5e7e\u5929\u5de6\u53f3\u3002<\/p>\n

\u56e0\u6b64\u5f9e\u9019\u500b\u89c0\u9ede\u51fa\u767c\uff0c\u4e39\u9ea5 Aarhus University \u7684\u7269\u7406\u5b78\u5bb6 Ulrik Uggerh\u00f8j \u8ddf\u4ed6\u7684\u53e6\u5916\u5169\u4f4d\u540c\u4e8b\u6c7a\u5b9a\u4ed4\u7d30\u6aa2\u67e5\u9019\u500b\u8aaa\u6cd5\u7684\u6b63\u78ba\u6027\u3002\u4ed6\u5011\u9996\u5148\u505a\u4e86\u7c21\u55ae\u7684\u8a08\u7b97\u3002\u4ed6\u5011\u5047\u8a2d\u5730\u7403\u5177\u6709\u5747\u52fb\u5bc6\u5ea6\uff0c\u7136\u5f8c\u8a08\u7b97\u5730\u5fc3\u8ddf\u5730\u8868\u7684\u91cd\u529b\u4f4d\u80fd\u3002\u5730\u5fc3\u8207\u5730\u8868\u7684\u91cd\u529b\u4f4d\u80fd\u5206\u5225\u70ba (-3GM\/2R) \u8207 (-GM\/R)\uff0c\u56e0\u6b64\u53ef\u4ee5\u8a08\u7b97\u5730\u5fc3\u8207\u5730\u8868\u7684\u91cd\u529b\u4f4d\u80fd\u5dee\u70ba (-GM\/2R)\u3002\u6839\u64da\u5ee3\u7fa9\u76f8\u5c0d\u8ad6\uff0c\u7531\u91cd\u529b\u4f4d\u80fd\u5dee\u6240\u9020\u6210\u7684\u6642\u9593\u5ef6\u9072\u7387\u70ba (-GM\/2Rc^2)\uff0c\u6216\u662f\u7d043*10^-10\uff0c\u4e5f\u5c31\u662f\u7d04\u4e09\u5341\u5104\u5206\u4e4b\u4e00\u3002\u9019\u500b\u6578\u5b57\u96d6\u5c0f\uff0c\u4f46\u662f\u8003\u616e\u5730\u7403\u7684\u5e74\u9f61\u70ba45.4\u5104\u5e74\uff0c\u9019\u6a23\u4e00\u7b97\u4e0b\u4f86\uff0c\u4ed6\u5011\u5f97\u5230\u5730\u5fc3\u6703\u6bd4\u5730\u8868\u7684\u5e74\u7d00\u5c0f\u7d041.5\u5e74\u3002\u5927\u7d04\u6bd4\u8cbb\u66fc\u4f30\u8a08\u7684\u6578\u5929\uff0c\u5927\u4e86\u5927\u7d04\u4e0a\u767e\u500d\u3002<\/p>\n

\u5982\u679c\u628a\u9019\u4e9b\u4ee5\u4e0a\u7684\u8a08\u7b97\u7565\u505a\u4fee\u6539\uff0c\u4e26\u5e36\u5165\u66f4\u4ed4\u7d30\u4e00\u4e9b\u7684\u5730\u7403\u5bc6\u5ea6\u5206\u4f48\uff0c\u4ed6\u5011\u767c\u73fe\u9019\u500b\u6578\u5b57\u6703\u8b8a\u62102.45\u5e74\u3002\u6240\u4ee5\u5982\u679c\u662f\u4f5c\u5feb\u901f\u7684\u4f30\u8a08\uff0c\u7528\u5747\u52fb\u5bc6\u5ea6\u6240\u4f30\u8a08\u51fa\u4f86\u7684\u7d50\u679c(1.5\u5e74)\u4e26\u4e0d\u7b97\u592a\u5dee\u3002<\/p>\n

\u4ed6\u5011\u4e5f\u628a\u985e\u4f3c\u7684\u8a08\u7b97\u61c9\u7528\u5728\u592a\u967d\u4e0a\u3002\u592a\u967d\u7684\u8cea\u91cf\u66f4\u5927\uff0c\u534a\u5f91\u66f4\u5927\uff0c\u5247\u592a\u967d\u4e2d\u5fc3\u8207\u592a\u967d\u8868\u9762\u7684\u91cd\u529b\u6642\u9593\u5ef6\u9072\u6548\u61c9\u6703\u8b93\u5169\u8005\u7684\u5e74\u7d00\u5dee\u5225\u5dee\u4e0a\u7d04\u56db\u842c\u5e74\u3002<\/p>\n

\u7576\u7136\u6211\u5011\u6c92\u6709\u8fa6\u6cd5\u5be6\u969b\u5229\u7528\u5be6\u9a57\u65b9\u6cd5\u4f86\u6aa2\u9a57\u5730\u5fc3\u662f\u5426\u7684\u78ba\u6bd4\u5730\u8868\u5e74\u8f152.49\u5e74\u3002\u4f46\u662f\u6709\u8da3\u7684\u662f\u96d6\u7136\u5730\u8868\u8207\u5730\u5fc3\u7684\u91cd\u529b\u4f4d\u80fd\u5dee\u53ea\u6709\u6578\u5341\u5104\u5206\u4e4b\u4e00\uff0c\u4f46\u662f\u653e\u5927\u5230\u5b87\u5b99\u7684\u6642\u9593\u5c3a\u5ea6\uff0c\u4f8b\u5982\u5730\u7403\u5e74\u7d00\u768446\u5104\u5e74\uff0c\u5f97\u5230\u7684\u5dee\u503c\u4f9d\u820a\u76f8\u7576\u53ef\u89c0\u3002\u6240\u4ee5\u5118\u7ba1\u6548\u61c9\u76f8\u7576\u5fae\u5c0f\uff0c\u4f46\u662f\u4f9d\u820a\u4e0d\u53ef\u8f15\u5ffd\u9019\u4e9b\u6548\u61c9\uff01<\/p>\n

\u539f\u59cb\u8ad6\u6587\uff1a<\/strong>The young centre of the Earth
\n<\/a>\u53c3\u8003\u8cc7\u6599\uff1a<\/strong>New Scientist 216\/04\/22: Earth's core is two-and-a-half years younger than its crust<\/a><\/p>\n

--
\n<\/strong>\u4f5c\u8005\uff1a\u9673\u52c1\u8c6a\u3000\u79d1\u6559\u4e2d\u5fc3\u7279\u7d04\u5beb\u624b\uff0c\u5f9e\u4e8b\u79d1\u666e\u6587\u7ae0\u5beb\u4f5c\u30022011\u5e74\u65bc\u7f8e\u570b\u7d10\u7d04\u5dde\u7acb\u77f3\u6eaa\u5927\u5b78(SUNY at Stony Brook)\u53d6\u5f97\u535a\u58eb\u5b78\u4f4d\uff0c\u7814\u7a76\u4e3b\u984c\u70ba\u76f8\u5c0d\u8ad6\u6027\u91cd\u96e2\u5b50\u78b0\u649e(Relativistic Heavy Ion Collision)\u3002\u9577\u671f\u64d4\u4efb\u4e2d\u6587\u79d1\u5b78\u65b0\u805e\u7db2\u7ad9\u300c\u79d1\u666f\u300d(Sciscape.org)\u7e3d\u7de8\u8f2f\u3002<\/strong><\/p>\n

 <\/p>\n

\"\u52a0\u5165\u597d\u53cb\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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