noun🔗ShareΦ, the 21st letter of the Euclidean and modern Greek alphabet, usually romanized as "ph"."In Greek class, we learned that phi looks like a circle with a vertical line through it. "languagewordsignChat with AIVocabulary GamePractice Reading
noun🔗ShareThe golden ratio."Many artists believe that shapes with proportions close to phi are the most visually pleasing. "mathnumberphilosophyartChat with AIVocabulary GamePractice Reading
noun🔗ShareA visual illusion whereby a sequential pattern of lights produces a false sense of motion."The old movie theater's marquee used a series of flashing bulbs to create a phi, making it look like the lights were chasing each other around the sign. "phenomenasensationphysicsmindtechnologyscienceChat with AIVocabulary GamePractice Reading
