Proof-of-concept nanogenerator turns CO₂ into sustainable power
University of Queensland researchers have built a generator that absorbs carbon dioxide (CO2) to make electricity.
Apr 18, 2024
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University of Queensland researchers have built a generator that absorbs carbon dioxide (CO2) to make electricity.
Apr 18, 2024
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Wind power is a source of energy that is both affordable and renewable. However, decision-makers have been reluctant to invest in wind energy due to a perception that wind farms require a lot of land compared to electric ...
Apr 17, 2024
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Skoltech scientists and their colleagues from Shubnikov Institute of Crystallography of RAS and research centers in China, Japan, and Italy have discovered a material for chemical storage of hydrogen that can "soak up" four ...
Apr 17, 2024
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Researchers at Tohoku University and the University of California, Santa Barbara, have unveiled a probabilistic computer prototype. Manufacturable with a near-future technology, the prototype combines a complementary metal-oxide ...
Apr 17, 2024
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Most people do not give the U.S. electric grid a second thought—we flip a switch, and the lights come on. Behind the scenes are thousands of power plants and utilities linked by millions of miles of transmission lines. ...
Apr 16, 2024
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The "miners" who chisel bitcoins out of complex mathematics are taking a 50% pay cut—effectively reducing new production of the world's largest cryptocurrency, again.
Apr 19, 2024
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Lithium-ion batteries (LIBs), mainly used as the power of computer, communication and consumer electronic products, require higher energy density, longer cycling life, faster-charging capability, and a broader operating temperature ...
Apr 18, 2024
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Researchers from the University of Missouri-Kansas City, School of Computing and Engineering, and independent researchers have developed a model, dubbed GREENSKY, that significantly enhances the energy efficiency and operational ...
3 hours ago
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While wind energy is becoming one of the fastest-growing energy sources in the world, wind turbine blade waste emerges as a critical issue. Addressing this urgent environmental concern, Lithuanian researchers have developed ...
6 hours ago
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Engineers have invented energy-efficient bricks with scrap materials, including glass, that are normally destined for landfill.
7 hours ago
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In physics, energy (from the Greek ἐνέργεια - energeia, "activity, operation", from ἐνεργός - energos, "active, working") is a scalar physical quantity that describes the amount of work that can be performed by a force, an attribute of objects and systems that is subject to a conservation law. Different forms of energy include kinetic, potential, thermal, gravitational, sound, light, elastic, and electromagnetic energy. The forms of energy are often named after a related force.
Any form of energy can be transformed into another form, but the total energy always remains the same. This principle, the conservation of energy, was first postulated in the early 19th century, and applies to any isolated system. According to Noether's theorem, the conservation of energy is a consequence of the fact that the laws of physics do not change over time.
Although the total energy of a system does not change with time, its value may depend on the frame of reference. For example, a seated passenger in a moving airplane has zero kinetic energy relative to the airplane, but non-zero kinetic energy relative to the Earth.
This text uses material from Wikipedia, licensed under CC BY-SA