倩倩打算买一盏漂亮的台灯送给爸爸做生日礼物,来到商店看到款式各样的台灯,不知选哪一盏。“你喜欢哪一盏可以打开试试看。”售货员热情地说。倩倩看中了一盏护眼灯,打开后发现灯光很暗,问售货员:“阿姨,有没有比这更亮一些的?”“其实,这盏台灯的光并不暗,因为周围太亮了,所以显得台灯的灯光比较暗。”售货员边说边把周围的灯关了,台灯的光立刻把周围照亮了。同一盏台灯,为什么倩倩先是感觉灯光较暗,后来又感觉亮了呢? Qianqian plan to buy a beautiful lamp to give my father a birthday present, came to the store to see the style of table lamps, I do not know which one to choose. “Which one do you like to open to give it a try?” Said the clerk enthusiastically. Qianqian fancy a eye lamp, open the light was very dark and asked the salesclerk: “Auntie, is there any brighter than this? ” “In fact, this lamp is not dark light, because The surroundings were too bright, so it seemed darker than the desk lamp. ”The salesperson said, turning off the lights around, and the light of the desk lamp immediately illuminated the surroundings. The same lamp, why Qian Qian first feeling darker, and later feel it bright?