Energy & Green Tech

Developing technologies that run on light

The future of faster, more efficient information processing may come down to light rather than electricity. Mark Lawrence, a postdoctoral scholar in materials science and engineering at Stanford, has moved a step closer to ...

Engineering

Glowing contact lens could prevent a leading cause of blindness

Hundreds of millions of people suffer from diabetes worldwide, putting them at risk for a creeping blindness, or diabetic retinopathy, that comes with the disease in its more advanced stages. Existing treatments, though effective, ...

Hi Tech & Innovation

Two Amazon patents focus on augmented reality technology

Amazon is making some noise in technology for augmented reality environments. Amazon Technologies in Seattle has two patents which present systems and methods for projecting a digital world into the room.

Light

Light is electromagnetic radiation, particularly radiation of a wavelength that is visible to the human eye (about 400–700 nm, or perhaps 380–750 nm.) In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not.

Three primary properties of light are:

Light, which exists in tiny "packets" called photons, exhibits properties of both waves and particles. This property is referred to as the wave–particle duality. The study of light, known as optics, is an important research area in modern physics.

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