Does Reading At Dusk Damage Our Eyes?

The enjoyment of reading in the evening hours is often clouded by fears of long-term damage to the eyes. However, this concern is unfounded, as a closer examination of the visual process in the dark shows. There are two different types of light receptors (photoreceptors) on the retina of the eye. The rods are highly … Does Reading At Dusk Damage Our Eyes?

Who Invented Braille?

Braille assigns a special pattern of dots to each letter that can be felt with the sense of touch. This braille is an indispensable means for non-sighted people to get information and to cope with everyday life. Braille, also called Braille, still works today as it did 155 years ago when it was invented by … Who Invented Braille?