夜間視力と目標物とその周囲の色

Night Vision and Objects, and the Color of Surrounding Objects

The color of the dress has great bearing on vision; and I have learned the following facts from my own observation: On a dark night a white coat can be seen farther than a black one. When there is moonlight, often a black coat can be seen farther than a white one. In any case, a light brown or mouse color can be seen a long distance. A black color against a black background is more difficult to see than white; the latter against white surroundings is more difficult than black. From these facts, the importance of bearing in mind the color of surrounding objects when fixing the kind of dress, or determining one’s movements, is apparent.