Athens, Greece travel guide! Must visit attractions, hidden gems & travel tips!

Tommy Edison on Instagram: "Can A Blind Person See Light? — Tommy, who’s been blind since birth, talks about his level of light perception and if he’s able to see light when a flashlight is pointed toward his eyes. #light #vision #perception #science #education #experiment"

MEMEZAR • MEMES & MEME-CULTURE on Instagram: "This temporarily broke my brain 😭 Optical illusions trick the brain by presenting visual information in a way that conflicts with how the brain normally interprets reality. They exploit the brain’s shortcuts for processing shapes, colors, light, and depth, causing it to see things that aren’t actually there or perceive them differently from reality. For example, lines of the same length may appear unequal, or a still image may seem to move because t