Energy & Green Tech

An eco-route for heavy-duty vehicles could reduce fuel consumption

Semi-trucks and other heavy-duty vehicles are responsible for nearly half of road transportation carbon dioxide emissions in Europe, according to the International Council on Clean Transportation. A team of researchers in ...

Computer Sciences

Securing the clouds

Cloud computing has revolutionized the way files are stored and shared, and processing carried out from the corporate down to the individual private user level. Security remains a contentious issue. As such, there is an ongoing ...

Business

Amazon seeks to build on soaring growth as Bezos hands over

Amazon is changing at the top but stressing continuity after founder Jeff Bezos announced he was handing over the role of chief executive to trusted lieutenant Andy Jassy, capping a spectacular expansion for the 27-year-old ...

Computer Sciences

How to train a robot (using AI and supercomputers)

Before he joined the University of Texas at Arlington as an Assistant Professor in the Department of Computer Science and Engineering and founded the Robotic Vision Laboratory there, William Beksi interned at iRobot, the ...

Business

India IT giant TCS sees profits jump on pandemic demand

India's largest software exporter Tata Consultancy Services saw its quarterly profits climb more than seven percent Friday, citing strong demand for its cloud services as the pandemic boosts remote working.

Business

ICE seeks large new cloud contract involving Microsoft, Amazon

U.S. Immigrations and Customs Enforcement is planning new large-scale expenditures on cloud computing with Microsoft Corp. and Amazon.com Inc.'s Amazon Web Services unit. The deal, slated for early 2021, could could reignite ...

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Cloud

A cloud is a visible mass of droplets or frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body. A cloud is also a visible mass attracted by gravity, such as masses of material in space called interstellar clouds and nebulae. Clouds are studied in the nephology or cloud physics branch of meteorology.

On Earth the condensing substance is typically water vapor, which forms small droplets or ice crystals, typically 0.01 mm in diameter. When surrounded by billions of other droplets or crystals they become visible as clouds. Dense deep clouds exhibit a high reflectance (70% to 95%) throughout the visible range of wavelengths. They thus appear white, at least from the top. Cloud droplets tend to scatter light efficiently, so that the intensity of the solar radiation decreases with depth into the gases, hence the gray or even sometimes dark appearance at the base. Thin clouds may appear to have acquired the color of their environment or background and clouds illuminated by non-white light, such as during sunrise or sunset, may appear colored accordingly. In the near-infrared range, clouds look darker because the water that constitutes the cloud droplets strongly absorbs solar radiation at those wavelengths.

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