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    October 16

    手表确定方向

     
     
    手表确定方向

        方法一:把当前的时间除以2,把所得的商数对准太阳。
                     表盘上12所对的方向就是北方。例如,现在是2
                            上午8点,除以,商数为4,将表盘上的4对准太阳,
                                            12所对的方向就是北方。                                                  
                         如果是下午,应以24小时计时法进行计算(如下午4
           点,就要按16点计算。)。
          方法二:在北半球,将表水平放置,时针指向太阳,时针与
                     12点刻度之间的夹角的中分线指的就是正南方向。
                             说明:用上述方法确定方向,必须使用确切的地方时间,
                                   如乌鲁木齐的地方时间是北京时间减去2小时9分钟;另外,
                             在北回归线以南不能使用这些方法,因为越靠近赤道,
           阳光几乎直射,很难用手表来辨别方向。
     

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