Two parallel optical surfaces often exhibit colorful fringes along the lines of equal thickness because of the interference of light. This simple phenomenon allows one to observe subwavelength ...

Researchers at Harvard create bizarre optical phenomena, defying the laws of reflection and refraction. Cambridge, Mass. - September 1, 2011 - Exploiting a novel technique called phase discontinuity, ...

1. The reflection of light from the surfaces of many kinds of leaves has been measured by means of a direct reading spectrophotometer, the measurements being made normal (that is, at an angle of 90⚬ ...

Scientists have created new types of 2D nanostructured surfaces which appear as realistic 3D objects – including shading and shadows – using nano-engineering techniques. When light hits an object, the ...