Refraction of light, total internal reflection and its ... Optical instruments: Human eye, image formation and accommodation, correction of eye defects (myopia, hypermetropia, presbyopia and ...

In the heart of Duncansville, Pennsylvania sits a building that from the outside looks like an unassuming orange structure with a simple “FLEA MARKET” sign. Step inside Antique Depot and you’ll ...

Animals with ultraviolet color patterns can be found all over nature. Here’s what we know about what purpose these patterns ...

The human eye represents one of the body ... This condition occurs when the light-sensitive layer at the back of the eye separates from its supporting tissue, initially causing visual disturbances ...

People can read intention in each other's gazes, recent research finds, lending evidence to this well-known assumption about human communication. The study reveals how humans use their eyes to ...

Blue light is a high-energy light that the eyes absorb from computers, smartphones, LED lights, and fluorescent lights. The sun is the biggest source of blue light. On a sunny day, it's 100,000 ...

Visual illusions are images that have tricked the human eyes and brain for a long time. These illusions can fool even the most observant eyes. Visual illusions have become a sensation on the ...

The speed of your eye movements, called saccades, determines how fast an object can move before it becomes invisible to you.

If you quickly move a camera from object to object, the abrupt shift between the two points causes a motion smear that might ...

Watch a movie, play some music, scroll aimlessly, just some of the usual go-tos when boredom hits. But sometimes, your brain ...