| 2. | In this article , introduce the important meanings of a - b effect , first is a have physics factors , second is wave function phase factor is connected with geometrical factor in ( b = 0 , a 0 ) , through a - b effect , we know : electromagnetic field vector e , b is local quantity , electromagnetic potential a , is global quantity , adding a , description and by the way of loop integral , electromagnetic field " effect is completely descripted
本文介绍了有重要历史意义的a - b效应， a - b效应揭示了两点物理观念的变革：一是电磁矢势有物理效应。二是在无场强但有磁矢势( b = 0 ， a 0 )的区域，波函数的相位因子与其运动空间结构有关。 a - b效应显示； e 、 b是局域量， a 、是总体量，只有加入a 、之后的描述，并通过a的环路积分，才能对电磁场的作用做出完全准确的描述。 |
