EntityQ5372632· pop 5· linked from 29 articlesemission theorySign in to saveproposal that visual perception is accomplished by eye beams emitted by the eyesConnectionsvisual perceptionEntityIsaac NewtonPersonPlatoEntityRené DescartesEntityJohn LockeEntityEuclidEntityInternational Standard Book NumberEntityspeed of light in vacuumEntityPtolemyEntityGalenEntityopticsEntityAphroditeEntityphotonEntityraccoonEntityEmpedoclesEntityIbn al-HaythamEntitydigital object identifierEntityAnno DominiEntitysonarEntityOCLC, Inc.EntityCategoriesHistory of opticsObsolete theories in physicsVisual perception