4 ms·

Yes, but daylight only occurs during the day, hence the name.

• dingaling 10y ago
  > Yes, but daylight only occurs during the day, hence the name. Only because for more than a century the overwhelming majority of domestic light bulbs aped the colour temperature of candles, so that nightlight unconsciously became associated with yellowness. There's nothing inherently 'right' about warm yellow light, it's entirely subjective based upon conditioning. For example people in hot, arid climates describe blue-white light as relaxing because it is associated with the cooler early morning. To them, yellow light is the scorching midday Sun. Having lived exclusively with 'daylight' domestic lighting for nearly a decade I agree with them. The solution to disruptive street lighting is not to fiddle with colour temperatures but to turn off the lighting when it's not required. A residential street doesn't need to be illuminated at 03:00 if there are no cars or pedestrians, but managing that would require motion sensors. Easier just to let the bulb burn away through the night.
  • cauterized 10y ago
    And for eons before that, the light we had at night was fire. That's long enough for us to evolve to be sensitive to blue light as a signal of daytime while having decreased curcadian sensitivity to light at lower color temperatures.