摘要
介绍了周日光行差、周年光行差的形成与变化．比较了恒星周年视差与光行差的方向差异以及极值出现的时间差异．介绍了光行差测定的手段，并指出地球绝对运动产生的先行差目前是无法测定的．
This paper introduces the formation and changes of diurnal aberration and annual aberration and compares in simple language the difference of directions between annual aberration and annual parallax and the difference of time when extremes emerge. Besides, it introduces the means of determining aberration of light and points out that it is impossible at present to determine aberration of light caused by the absolute movement of the earth.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
1995年第S1期23-26,共4页
Journal of Shaanxi Normal University：Natural Science Edition
关键词
光行差
秒差距
拱极星
黄道面
aberration
parsec
circumpolar star
ecliptic place
