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, ...

Engineering

Investigating 3-D-printed structures in real time

A team of scientists working at the National Synchrotron Light Source II (NSLS-II) at the U.S. Department of Energy's (DOE's) Brookhaven National Laboratory has designed an apparatus that can take simultaneous temperature ...

Engineering

Mantis shrimp inspires new breed of light sensors

Inspired by the eyes of mantis shrimp, researchers have developed a new kind of optical sensor that is small enough to fit on a smartphone but is capable of hyperspectral and polarimetric imaging.

Energy & Green Tech

Unlocking the power of photosynthesis for clean energy production

As the world faces an increasing demand for clean and sustainable energy sources, scientists are turning to the power of photosynthesis for inspiration. With the goal of developing new, environmentally friendly techniques ...

Electronics & Semiconductors

Using the model of a pancake stack to make better solar cells

Researchers from the University of Calgary (UCalgary), with help from colleagues at the University of Saskatchewan (USask), are one step closer to creating solar electronics that are flexible, powerful, and better for the ...

Energy & Green Tech

Solar cells inspire Li-ion batteries

Solar energy is at the forefront of the global shift toward producing sustainable energy sources and addressing energy poverty. However, the intermittent nature of solar energy limits its use for applications such as IoT ...

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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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