第十四章相第十四章相第十四章相第十四章相对论对论NO.6-1Relativity2020/10/1612014年年3月月8日，马航客机日，马航客机MH370失联；失联；很久未确定飞机位置的原因：依靠地面雷达的空管技术难以掌很久未确定飞机位置的原因：依靠地面雷达的空管技术难以掌握飞机实际位置。握飞机实际位置。2020/10/162NAVSTAR permits locations and speeds any where on Earth to be determined to within about 16 m and 2 cm/s.However,if relativity effects were not taken into account,speeds could not be determined any closer than about 20 cm/s,which is unacceptable for modern navigation systems.2020/10/163相对论包括相对论包括:狭义相对论（狭义相对论（1905）广义相对论（广义相对论（1915）l只适
