2005年8月14日

[导入]18.1 Why Are Maps Drawn with North at the Top?

摘要： Now it is hard to visualize a map that does not feature north at the top, but this was not always so. The oldest known map in the accepted sense of the word was drawn about 3,800 BC, and represents th... 阅读全文

posted @ 2005-08-14 23:58 新科程序员 阅读(86) 评论(0) 推荐(0) 编辑

[导入]17.2 Sleepwalking - Fact or Fancy?

摘要： There is an endless supply of stories about sleepwalkers. Persons have been said to climb on roofs, solve mathematical problems, compose music, walk through windows, and commit murder in their sleep. ... 阅读全文

posted @ 2005-08-14 23:58 新科程序员 阅读(123) 评论(0) 推荐(0) 编辑

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