Energy-smart bricks keep waste out of landfill
Engineers have invented energy-efficient bricks with scrap materials, including glass, that are normally destined for landfill.
Apr 23, 2024
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9
Engineering
Engineers have invented energy-efficient bricks with scrap materials, including glass, that are normally destined for landfill.
Apr 23, 2024
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9
Engineering
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 ...
Apr 23, 2024
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Energy & Green Tech
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 ...
Apr 23, 2024
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Energy & Green Tech
The electrode sheet of a thermoelectric device consists of ionic hydrogel, which is sandwiched between the electrodes to form, and the Prussian blue on the electrode undergoes a redox reaction to improve the energy density ...
Apr 22, 2024
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Energy & Green Tech
Ninety miles west of Chicago, the corn and soybean fields stretch to the sky, and dreams of the clean energy future dangle—just out of reach.
Apr 22, 2024
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Energy & Green Tech
Sodium (Na), which is over 500 times more abundant than lithium (Li), has recently garnered significant attention for its potential in sodium-ion battery technologies. However, existing sodium-ion batteries face fundamental ...
Apr 19, 2024
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Energy & Green Tech
The latest wearable devices, such as Samsung's Galaxy Ring and Apple's Vision Pro, are taking health care a step further and even enabling people to work virtually. Given the characteristics of wearable devices that require ...
Apr 19, 2024
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Engineering
A technology that harnesses solar energy to produce high-efficiency ammonia (NH3) has been unveiled by a research team affiliated with UNIST.
Apr 19, 2024
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Business
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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Business
In 1994, apartheid ended and the African National Congress (ANC) won South Africa's first ever democratic elections, promising "Electricity for All" as part of its Reconstruction and Development Program.
Apr 19, 2024
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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