wavelength:: 570-590 nm
emotion:: surprise
the brightest color in the visible spectrum by luminance
evolutionary signal: sudden light, dawn, alerting patterns, attention grab
properties
highest luminance — the first color the eye detects
triggers orienting response: turn, look, assess
the color of gold, sulfur, sunlight, pollen
in nature
warning patterns: wasps, bees, poison dart frogs — yellow-and-black means danger
flowers: pollinator attractant, advertising nectar
dawn and dusk: the transitional light, the moment of change
lightning: sudden discharge, raw energy
in prysm
attention needed, new event, unexpected state change, notification
the alert signal — something just happened, orient yourself