Engineering

Helicopter-mounted device measures methane in ship exhaust

Researchers have developed a new gas sensor that is compact and lightweight enough to monitor emissions in ship exhaust from an airborne vehicle. The device uses mid-infrared supercontinuum gas spectrometry to simultaneously ...

Engineering

Miniature spectrometer for the smartphone

Recognizing fake drugs? Testing water samples ourselves? Checking the quality of air? In the future, it could be possible to do all this using a smartphone in a quick, cost-effective and straightforward way. The process is ...

Robotics

Using optogenetics to control movement of a nematode

A team of researchers from the University of Toronto and Lunenfeld-Tanenbaum Research Institute, has developed a technique for controlling the movements of a live nematode using laser light. In their paper published in the ...

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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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