A pattern of distorted lines is visible as a reflection in this close-up view of a human eye. By observing the deformation of ...

Purple is a combination of wavelengths from opposite extremes of the spectrum, which technically deosn’t make any sense, but ...

Stress and long nights aren’t the only reasons you’re seeing dark under-eye circles. Multiple other factors, including genetics, dehydration and age, can also cause them to form, making them ...

It can only be seen by looking into the mirror. If a surface is rough, diffuse reflection happens. Instead of forming an image, the reflected light is scattered in all directions. This may cause a ...