Robotics
This research project was originated from the collaboration between two institutions with their respective expertise: The TIPs laboratory of the ULB, in Belgium, which is a group dedicated to the study of transport phenomena ...
Apr 1, 2021
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41
Robotics
Engineers at Duke University have developed an electronics-free, entirely soft robot shaped like a dragonfly that can skim across water and react to environmental conditions such as pH, temperature or the presence of oil. ...
Mar 25, 2021
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133
Engineering
Imperial researchers have designed a unique curved barrier which can protect people from the damaging effects of air pollution.
Feb 26, 2021
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124
Energy & Green Tech
Professor Jeremy Michalek and his Ph.D student Matthew Bruchon have published a study investigating what vehicle electrification would look like in a world where ridesourcing companies like Uber and Lyft were held responsible ...
Feb 22, 2021
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31
Engineering
Home owners, especially those in noisy districts, can look forward to greater living comfort with a new invention by researchers from the National University of Singapore (NUS) School of Design and Environment (SDE) that ...
Feb 4, 2021
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30
Consumer & Gadgets
The multinational electronics company Xiaomi announced the development of a new power transmission system that can charge a cellphone from across a room without any wires or charging pads.
Engineering
We all have images in our mind of rocket launches from Cape Canaveral Air Force Station hurtling astronauts into space and satellites into orbit.
Engineering
Many people beat the summer heat by cranking the air conditioning. However, air conditioners guzzle power and spew out millions of tons of carbon dioxide daily. They're also not always good for your health—constant exposure ...
Aug 18, 2020
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278
Engineering
Over the last few years of frequent and intense wildfire seasons, many parts of the U.S. have experienced hazardous air quality for days on end. At the same time a number of low-cost air quality monitors have come on the ...
Aug 18, 2020
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48
Energy & Green Tech
More than 90 percent of the world's energy use today involves heat, whether for producing electricity, heating and cooling buildings and vehicles, manufacturing steel and cement, or other industrial activities. Collectively, ...
Aug 11, 2020
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86
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
