Internet

Google Maps displays traffic light locations

For millions of motorists around the globe, GPS traffic guidance has become indispensable. This week, Google confirmed it has been testing a feature that will make getting to where you want to go even easier: traffic light ...

Consumer & Gadgets

When speech assistants listen even though they shouldn't

Researchers from Ruhr-Universit├Ąt Bochum (RUB) and the Bochum Max Planck Institute (MPI) for Cyber Security and Privacy have investigated which words inadvertently activate voice assistants. They compiled a list of English, ...

Energy & Green Tech

Dye-sensitized solar cells that adapt to different light conditions

Solar cells made of semi-transparent photovoltaic (PV) materials typically have a fixed optical transmission, which results in either high transparency or high efficiency, but rarely both. In order to perform optimally when ...

Computer Sciences

Analysis of complex geometric models made simple

Researchers at Carnegie Mellon University have developed an efficient new way to quickly analyze complex geometric models by borrowing a computational approach that has made photorealistic animated films possible.

Hi Tech & Innovation

Self-driving bus services tested out in Tallinn

Two types of self-driving bus are being tested out in Estonia this week as part of initiatives that could revolutionise public transport in Europe.

Computer Sciences

Light bulb vibrations yield eavesdropping data

In an era of digital eavesdropping where hackers employ a variety of means to take over built-in video cameras, peruse personal digital data and snoop on cellular conversations, researchers have finally seen the light.

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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.

This text uses material from Wikipedia, licensed under CC BY-SA