Computer Sciences
Imagine yourself glancing at a busy street for a few moments, then trying to sketch the scene you saw from memory. Most people could draw the rough positions of the major objects like cars, people, and crosswalks, but almost ...
Mar 18, 2024
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28
Engineering
Poor access to safe drinking water is a major issue for a third of the world's population, especially for those living in rural areas. Because of the abundant sunlight in many of these regions, solar disinfection technology ...
Jul 7, 2022
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89
Robotics
Robotic exoskeletons designed to help humans with walking or physically demanding work have been the stuff of sci-fi lore for decades. Remember Ellen Ripley in that Power Loader in "Alien"? Or the crazy mobile platform George ...
Mar 20, 2024
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46
Robotics
Engineers have developed a new class of smart textiles that can shape-shift and turn a two-dimensional material into 3D structures.
Jul 13, 2022
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74
Engineering
When the power grid goes down, there's a step-by-step recovery process—a "blackstart" that up to now has depended on power from gas or hydro turbines spinning away inside a power plant.
May 31, 2022
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383
Engineering
Cooking devices that incorporate three-dimensional (3D) printers, lasers, or other software-driven processes may soon replace conventional cooking appliances such as ovens, stovetops, and microwaves. But will people want ...
Mar 21, 2023
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111
Engineering
Researchers from The University of Texas at Dallas and Oklahoma State University have developed an innovative terahertz imager microchip that can enable devices to detect objects and create images through obstacles that include ...
Jun 6, 2022
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10
Robotics
Engineers at Princeton and North Carolina State University have combined ancient paper-folding and modern materials science to create a soft robot that bends and twists through mazes with ease.
May 6, 2024
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78
Software
A growing number of tools enable users to make online data representations, like charts, that are accessible for people who are blind or have low vision. However, most tools require an existing visual chart that can then ...
Mar 27, 2024
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39
Electronics & Semiconductors
Researchers have developed a novel 3D stretchable electronic strip which is expected to open up a range of new possibilities in wearable electronic textiles.
Jul 3, 2024
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55
An engine is a mechanical device that produces some form of output from a given input. An engine whose purpose is to produce kinetic energy output from a fuel source is called a prime mover; alternatively, a motor is a device which produces kinetic energy from other forms of energy (such as electricity, a flow of hydraulic fluid or compressed air). A motor car (automobile) has a starter motor and motors to drive pumps (fuel, power steering, etc) – but the power plant that propels the car is called an engine. The term 'motor' was originally used to distinguish the new internal combustion engine -powered vehicles from earlier vehicles powered by a steam engine (as in steam roller and motor roller).
Military engines included siege engines, large catapults, trebuchets and battering rams.
This text uses material from Wikipedia, licensed under CC BY-SA
