9.254 Optical illusions 9.246.1 Absent square illusion 9.248.8 Afterimages illusion 9.247.8 Barberpole illusion 9.248.5 Bending pencil illusion 9.122.2 Bent stick illusion 9.246.9 Blivet illusion 9.247.9 Cloud shapes illusion 9.246.6 Count the boxes illusion 9.247.4 Duck-rabbit illusion 9.248.1 Ebbinghaus illusion 9.6.4 Feel two noses, tactile illusion 9.255 Four or three bars illusion? 9.246.4 Fraser spiral illusion 9.246.3 Ghost coin illusion 9.246.5 Hermann Grid illusion 9.247.3 Impossible square 9.247.5 Impossible triangle 9.246.1 Kanizsa triangle illusion 28.109 Mirror images (inversion, lateral inversion) 36.20.4 "Man in the Moon" illusion 28.4.6 Mirage illusion 9.248.7 Moving window illusion 9.247.2 Müller-Lyer illusion 9.246.2 Necker cube illusion 9.248.3 Poggendorf illusion 37.8.6 Raindrops illusion 28.122 Refraction in water illusion 9.254.1 Retention of image illusion 9.247.1 Reversible figures illusion 28.5.4 Rising coin illusion 36.20.6 Rising moon illusion 9.6.2 Sense of touch 9.6.2 Sense of touch, somatic sensory system 9.248.6 Size-weight illusion 9.246.7 Slice of pie illusion 9.248.4 Spinning picture illusion 9.127.2 Spoon in water illusion 36.20.7 Sun and Moon diameter illusion 9.246.8 Vertical-horizontal illusion 9.247.7 Young girl-old woman illusion |