Telecom
On Sept. 1 and 2, 1859, telegraph systems around the world failed catastrophically. The operators of the telegraphs reported receiving electrical shocks, telegraph paper catching fire, and being able to operate equipment ...
Mar 21, 2022
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6
Machine learning & AI
In 2020, Detroit police arrested a Black man for shoplifting almost $4,000 worth of watches from an upscale boutique. He was handcuffed in front of his family and spent a night in lockup. After some questioning, however, ...
Mar 16, 2022
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38
Electronics & Semiconductors
When Google unveiled its first autonomous cars in 2010, the spinning cylinder mounted on the roofs really stood out. It was the vehicle's light detection and ranging (LiDAR) system, which worked like light-based radar. Together ...
Mar 9, 2022
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308
Electronics & Semiconductors
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 ...
Mar 8, 2022
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89
Automotive
German auto giant Volkswagen said on Friday it had approved a 2 billion euro investment in a new electric car plant, as it seeks to overhaul its business in the face of stiff competition from US rival Tesla.
Mar 4, 2022
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16
Robotics
At Arla's dairy in Taulov, Denmark, apron-clad dairy workers have been joined by a shiny silver and red-eyed colleague—a robot that helps them produce delicious Danish Havarti, Danbo and Maribo cheeses.
Feb 22, 2022
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47
Robotics
In recent years, scientists have introduced a wide variety of robots of all shapes and sizes. Among these are microswimmers, carefully engineered microstructures that can move in water and other liquids.
Energy & Green Tech
In the laboratory, perovskite solar cells already reach efficiencies above 25 percent. Compared to silicon solar cells of similar efficiency, the initial materials used in the former case are cheaper and production methods ...
Feb 17, 2022
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5
Energy & Green Tech
A research team led by Lund University in Sweden has shown how solar power can convert carbon dioxide into fuel, by using advanced materials and ultra-fast laser spectroscopy. The breakthrough could be an important piece ...
Feb 16, 2022
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4250
Automotive
Anyone who has ever been temporarily blinded by high-beam headlights from an oncoming car will be happy to hear this.
Feb 15, 2022
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50
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
