TalkPhototropic shieldingCanonLegendsInfinitiesTransparent substances could undergo a transformation called phototropic shielding, becoming filters that blocked powerful light radiation while still remaining see-through.AppearancesStar Wars: A New Hope novelization (and unabridged audiobook) (First appearance, in book)(Unkown)UnkownUnknown Jedis Honor(Unkown)UnkownUnknown Splinter of the Minds Eye(Unkown)UnkownUnknown X-Wing: Wraith Squadron (and unabridged audiobook)(Unkown)UnkownUnknown