Hi Tech & Innovation
(Tech Xplore)—Panasonic has developed technology to help keep drivers safer from risks of drowsiness at the wheel. Cool air and louder music are engineered as remedies, for example, to keep the driver not only awake but ...
Computer Sciences
(Tech Xplore)—IBM and the Air Force Research Laboratory are working to develop an artificial intelligence-based supercomputer with a neural network design that is inspired by the human brain.
Energy & Green Tech
High performing lithium-ion batteries are a key component of laptops, smart phones, and electric vehicles. Currently, the anodes, or negative charged side of lithium ion batteries, are generally made with graphite or other ...
Apr 17, 2017
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Energy & Green Tech
(Tech Xplore)—Canada-based Hydrostor on Wednesday announced Hydrostor Terra, a bulk energy storage system. The company says the system competes head-to-head with new natural gas plants.
Energy & Green Tech
Homes of the future could have cleaner air and lower energy bills due to a Purdue team's BioWall innovation involving the use of a living wall of air-cleaning plants.
Mar 23, 2017
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Internet
To air travelers who waste precious time inflight staring blankly as your browser struggles to load a page, relief may be a quick download away.
Mar 14, 2017
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Energy & Green Tech
Scientists led by a team at Caltech have developed a new method for potentially removing nearly all sulfur compounds from gas and diesel fuel.
Feb 27, 2017
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Hi Tech & Innovation
(Tech Xplore)—Korea has its eye on advanced transport and taking a place in the frontlines of research and development. Case in point: Its research interest in coming up with an ultra-fast train. Call it ultra-fast, call ...
Energy & Green Tech
(Tech Xplore)—UK-based Highview Power Storage is a company to watch in the energy storage market—using liquefied air as the energy storage medium. When the liquid air warms up it expands and can drive a turbine to make ...
Energy & Green Tech
Researchers at Yale have developed a new technology that could make energy from the low-temperature wasted heat produced by industrial sources and power plants, tapping into a widely available—and mostly unused—resource.
Jun 28, 2016
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The Earth's atmosphere is a layer of gases surrounding the planet Earth that is retained by the Earth's gravity. It has a mass of about five quadrillion metric tons. Dry air contains roughly (by volume) 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, and trace amounts of other gases. Air also contains a variable amount of water vapor, on average around 1%. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night.
There is no definite boundary between the atmosphere and outer space. It slowly becomes thinner and fades into space. An altitude of 120 km (75 mi) marks the boundary where atmospheric effects become noticeable during atmospheric reentry. The Kármán line, at 100 km (62 mi), is also frequently regarded as the boundary between atmosphere and outer space. Three quarters of the atmosphere's mass is within 11 km (6.8 mi; 36,000 ft) of the surface.
This text uses material from Wikipedia, licensed under CC BY-SA
