Security
The UK government is currently trialling a contact tracing app among residents of the Isle of Wight ahead of a plan to roll it out across England. The app is designed to alert users if they have been in contact with someone ...
May 15, 2020
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Telecom
In the event of fires, earthquakes, or in other emergency situations, rescue forces are often called to free persons caught in buildings. These rescue missions are very risky: Dangers are difficult to assess in advance and ...
Apr 16, 2020
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Business
Boeing lost $52 billion on the stock market in a week, a rout that underscores the challenges facing the aircraft manufacturer amid setbacks over the 737 MAX and the coronavirus pandemic.
Mar 15, 2020
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Engineering
Drone pilots may become superfluous in the future. New research from Aarhus University has allowed artificial intelligence to take over control of drones scanning and measuring terrain.
Mar 5, 2020
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Internet
Canada's privacy watchdog on Friday announced an investigation into a US software startup reportedly capable of matching images of unknown faces to photos it mined from millions of websites and social media networks.
Feb 21, 2020
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Robotics
The Korea Institute of Machinery & Materials (President Chunhong Park; hereinafter "KIMM") developed a robot hand capable of handling various objects and tools in daily life, such as holding an egg and cutting paper with ...
Feb 10, 2020
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Business
Amazon said Friday it paid more than $1 billion in US federal income taxes in 2019 as it pushed back at criticism over its corporate responsibility.
Jan 31, 2020
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Business
The head of Chinese travel giant Trip.com, Jane Sun, is on a mission to propel women through her workforce, spearheading novel approaches such as encouraging babies on business trips and free egg freezing.
Dec 1, 2019
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Business
Japan's Softbank said Monday it will merge its Z Holdings unit—formerly called Yahoo Japan—with popular chat app Line in a multibillion-dollar deal it hopes will help it better compete against big guns in the digital ...
Nov 18, 2019
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3
Robotics
Skyscrapers are rising rapidly around the world, continuously transforming city skylines. However, their repair and maintenance is becoming more and more difficult. So, who can safely perform the job? Will a friendly neighborhood ...
Nov 8, 2019
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In physics, a force is any influence that causes an object to undergo a change in speed, a change in direction, or a change in shape. In other words, a force is that which can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or which can cause a flexible object to deform. Force can also be described by intuitive concepts such as a push or pull. A force has both magnitude and direction, making it a vector quantity. Newton's second law, F=ma, was originally formulated in slightly different, but equivalent terms: the original version states that the net force acting upon an object is equal to the rate at which its momentum changes.
Related concepts to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque which produces changes in rotational speed of an object. Forces which do not act uniformly on all parts of a body will also cause mechanical stresses, a technical term for influences which cause deformation of matter. While mechanical stress can remain embedded in a solid object, gradually deforming it, mechanical stress in a fluid determines changes in its pressure and volume.
This text uses material from Wikipedia, licensed under CC BY-SA
