Meanings

smog alert

photochemical smog

glowstick

Spanish dagger

there isn't a moment to be wasted

photoconduction

Bukkōji sect (of Shin Buddhism)

arrival

polarizing prism

photon torpedo

Order of the Rising Sun, Gold and Silver Star

Order of the Sacred Treasure, Gold and Silver Rays

Order of the Precious Crown, Ripple

Order of the Sacred Treasure, Silver Rays

blue light-emitting diode

see Nikko and die

Mantra of Light

variable light (e.g. with a dimmer)

dimmer

zodiacal light