在无电视节目时,即扫描电子流恒定不变时,荧光屏上光栅各处的亮度应均匀一致。由于行扫描电子流与荫罩板上小孔之间的互相干扰作用,使光栅在水平方向上出现周期性的亮度调制,像是有一股水浪在不断地冲击彩色画面,称莫尔效应,也叫波纹形图形失真。 In the absence of television programs, that is, constant scanning electron flow, the screen brightness of the grating should be uniform throughout. Due to the mutual interference between the row-scanning electron flow and the small holes in the shadow mask, the grating is periodically modulated in brightness in the horizontal direction. For example, there is a wave of water constantly impacting the color picture, Also known as corrugated graphics distortion.