In addition to what others said, the way you perceive light intensity is not linear. Between your eye adjusting to changing light levels and just the way your brains visual centers work, it’s closer to logarithmic. Indoor lighting at night probably feels like, what, 10% of the brightness of daylight? In reality it’s less than 1%, sometimes closer to 0.1%.
In addition to what others said, the way you perceive light intensity is not linear. Between your eye adjusting to changing light levels and just the way your brains visual centers work, it’s closer to logarithmic. Indoor lighting at night probably feels like, what, 10% of the brightness of daylight? In reality it’s less than 1%, sometimes closer to 0.1%.