Energy & Green Tech
With concerns over sustainability increasing in the energy industry, fossil-fuel companies have embraced plans to revamp, rather than decommission, vast networks of steaming, flashing and aging refinery pipelines into more ...
Feb 5, 2024
0
1
Telecom
For the first time, visitors at the 2024 Olympic Games will be able to fly to venues using air taxis. Vertical takeoff aircraft such as drones, multirotors and air taxis will take off from and land on pads known as vertiports.
Feb 1, 2024
0
1
Robotics
In the future, soft robots will be able to perform tasks that cannot be done by conventional robots. These soft robots could be used in terrain that is difficult to access and in environments where they are exposed to chemicals ...
Feb 1, 2024
0
56
Automotive
After hours of routine operations, an air traffic controller gets a radio call from a small aircraft whose cockpit indicators can't confirm that the plane's landing gear is extended for landing. The controller arranges for ...
Jan 31, 2024
0
2
Automotive
In the past 15 months, no one has been more responsible for safety on the nation's roads than Ann Carlson. For much of that time she has served as acting administrator of the National Highway Traffic Safety Administration, ...
Jan 30, 2024
0
1
Engineering
Multifamily buildings in Honolulu without air conditioning will become increasingly warmer in the decades to come with "comfort levels" dropping by 42% by 2080 without interventions.
Jan 25, 2024
0
1
Business
A Boeing 757 jet operated by Delta Air Lines lost a nose wheel while preparing for takeoff from Atlanta.
Jan 24, 2024
0
19
Engineering
The maglev train represents a type of modern urban rail transit transportation tool, boasting many technical advantages such as low noise, green environmental protection, small turning radius, good stability and high comfort. ...
Jan 16, 2024
0
1
Hi Tech & Innovation
NASA and Lockheed Martin formally debuted the agency's X-59 quiet supersonic aircraft Friday. Using this one-of-a-kind experimental airplane, NASA aims to gather data that could revolutionize air travel, paving the way for ...
Jan 15, 2024
0
148
Energy & Green Tech
Tech aimed at battling climate change and even pumping fresh water out of thin air attracted crowds as the annual CES gadget extravaganza showed its green side.
Jan 13, 2024
0
63
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
