Why do engineers use the red lights inside submarines instead of white light?
为什么在潜艇里面使用的是红灯而不是白颜色的呢？
原文地址：https://www.quora.com/Why-do-engineers-use-the-red-lights-inside-submarines-instead-of-white-light
The real answer is that red light does not diminish your ability to see in the dark. Some submarines use red interior lights for the same reason as airport control towers (at night), planetariums, and some movie theaters. The reason is that it's easier for your eyes to adjust from red light to dark than from white light to dark.
使用红颜色的灯真正的原因是为了让你能在黑暗环境中还能看清东西。一些潜艇使用红颜色灯的原因就和机场塔台（晚间），天文馆以及一些剧院使用红灯的原因一样。原因就是这样能让你的眼睛在从红颜色到黑色的转换中更快的适应。
Life on-board a nuclear submarine in America follows an 18 hour day. You stand watch for 6 hours, perform maintenance for 6 hours, and have 6 hours of personal time where you’re also expected to sleep at some point. We still used a 24 hour clock because we needed to know if it was night or day when we surfaced. Red lighting in the control room (the only place other than in berthing that the red lights were used.) was only used in preparation of coming to Periscope depth.
美国核潜艇上的生活遵循着18小时的原则。你值班6小时，维护6小时，然后有6小时的个人时间，你也可以在个人的6小时内睡觉。我们同样适用24小时制的作息时间，因为我们需要在上浮的时候知道是白天还是黑夜。在控制室的红灯（除了铺位唯一使用红灯的地方）只在准备进入潜望镜深度的时候使用。
Rig for red served two purposes: First was to acclimate the eyes to darkness prior to going topside at night, and Second to prevent light from being emitted from the raised periscope. Even though there was a "blackout blind" on the scopes, the crew could not take the risk of light being emitted from the other end of the periscope as that light could be seen for miles. Being detected as a submarine is a worst case scenario.
桅杆使用红灯有两个目的，第一是为了让眼睛在黑暗中更快的去适应，第二是为了防止灯光通过潜望镜泄露出去。尽管在那地方会有灯火管制，但艇员们不能去冒让灯光通过潜望镜发出，然后传播几公里的风险。潜艇被发现是最糟糕的情形了。
