3 ms·
The red light doesn't seem to travel as far. It's less likely to wake your partner when you peek at your device in the middle of the night.
by art4ur 7y ago
The red light doesn't seem to travel as far. It's less likely to wake your partner when you peek at your device in the middle of the night.
- internet_user 7y agothat has to do with two things: 1) our photoreceptors in retina have highest sensitivity to blue 2) blue photons are higher in energy than red (1.5x to 2x, depending on specific frequencies/color temps)