But when light bulbs were invented, they were incandescent and much redder and dimmer. If you burn them too hot, the filaments would melt. Therefore there wasn’t much blue light if any released by early light bulbs
But electric lights would still have imitated daylight better than candles or gas lights, and human biology responds to what time of day or perceives itself to be in.
Exposure to blue light affects sleep rhythm.
But when light bulbs were invented, they were incandescent and much redder and dimmer. If you burn them too hot, the filaments would melt. Therefore there wasn’t much blue light if any released by early light bulbs
Indeed.
But electric lights would still have imitated daylight better than candles or gas lights, and human biology responds to what time of day or perceives itself to be in.