Telecom
Airline passengers who have endured tens of thousands of weather-related flight delays this week got a welcome respite from the headaches Saturday, despite concerns about possible disruptions caused by new wireless 5G systems ...
Jul 1, 2023
0
27
Automotive
Researchers at Carnegie Mellon University believe they have developed the first AI pilot that enables autonomous aircraft to navigate a crowded airspace.
Aug 8, 2022
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167
Security
After remaking their security procedures following the 9/11 attacks to stop airline hijackings, carriers are now faced with rising threats targeting computers and electronic equipment critical to their operations and safety.
Sep 11, 2021
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48
Robotics
To perform well on highly dynamic tasks, robots should be able to move quickly and be highly reactive. As robots typically have physical constraints and hardware limitations, computer scientists should also develop planners ...
Other
It has been 10 years since Malaysia Airlines passenger flight MH370 disappeared on March 8 2014. To this day it remains one of the biggest aviation mysteries globally.
Mar 5, 2024
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8
Consumer & Gadgets
With airplane bathrooms inaccessible to most people with disabilities, those who use wheelchairs have a necessary pre-flight routine: Dehydrate and hope for the best.
Oct 6, 2023
1
16
Energy & Green Tech
Researchers have developed a low-cost, energy-efficient method for making materials that can capture carbon dioxide directly from the air.
Jun 5, 2024
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123
Business
When Jungsang Kim came to Duke University in 2004, he wasn't sure he'd live long enough to witness quantum advantage: the elusive moment when a quantum computer outperforms a classical computer to solve a real-world problem.
Dec 6, 2023
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24
Engineering
Imperial researchers have designed a unique curved barrier which can protect people from the damaging effects of air pollution.
Feb 26, 2021
3
124
Robotics
In recent years, an entirely new class of robot—inspired by natural forms and built using soft, flexible elastomers—has taken the field by storm, with designs capable of gripping objects, walking, and even jumping.
Dec 7, 2018
0
151
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
