Security
The discovery of a flaw in Bluetooth specification that could enable an attack to spy on your information made news this week; the attacker could be able to weaken the encryption of Bluetooth devices and snoop on communications ...
Robotics
Researchers at the Max Planck Institute for Intelligent Systems (MPI-IS), Cornell University and Shanghai Jiao Tong University have developed collectives of microrobots which can move in any desired formation. The miniature ...
Apr 26, 2022
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Robotics
Soft inflatable robots have emerged as a promising paradigm for applications that require inherent safety and adaptability. However, the integration of sensing and control systems in these robots has posed significant challenges ...
Sep 15, 2023
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21
Engineering
A mock B61-12's strike in the dusty Nevada desert successfully completed the first in a series of flight tests with the U.S. Air Force's newest fighter jet, demonstrating the bomb's first release from an internal bomb bay ...
Nov 23, 2020
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Robotics
More than 1 million Americans require daily physical assistance to get dressed because of injury, disease and advanced age. Robots could potentially help, but cloth and the human body are complex.
May 14, 2018
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Electronics & Semiconductors
Created by nature, the human skin shows powerful sensing capabilities that have been pursued by scientists for a very long time. However, it is challenging for today's technologies to replicate the spatial arrangement of ...
Jun 4, 2024
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27
Robotics
A closed door is just one of many obstacles that poses no barrier to a new type of flying, micro, tugging robot called a FlyCroTug. Outfitted with advanced gripping technologies and the ability to move and pull on objects ...
Oct 24, 2018
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76
Robotics
Soft robots, or those made with materials like rubber, gels and cloth, have advantages over their harder, heavier counterparts, especially when it comes to tasks that require direct human interaction. Robots that could safely ...
Dec 1, 2022
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75
Energy & Green Tech
Japan's nuclear regulator on Wednesday approved plans by the operator of the wrecked Fukushima nuclear plant to release its treated radioactive wastewater into the sea next year, saying the outlined methods are safe and risks ...
May 18, 2022
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Electronics & Semiconductors
Individuals who have limited hand function can soon have a simple way of controlling devices such as computers, smartphones, and wheelchairs by wearing a smart mouthguard that translates complex bite patterns accurately and ...
Oct 11, 2022
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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
