这听起来有些复杂，其实很简单，举例说明：如果你将光源至被摄主体的距离增加1倍，那么落在主体上的光线只有距离增加前的四分之一。
That sounds complicated, but isn't really. If you move a light twice as far from your subject, you end up with only one-quarter of the light on the subject.
试着白天时活动一下，睡觉前一定要让身体有时间从人造光源中抽离。
Try and get some activity in to your day and make sure to give your body time to unplug away from artificial light before heading to bed.
为避免这些问题，在正常上床睡觉前的一个小时停止使用所有电子设备，避开任何光源发出的亮光。
To avoid these issues, impose a moratorium on all electronic devices in the hour before your normal bedtime and be cautious about bright light from any sources in the hours before bed.
应用推荐