Engineering
A team of physicists and material scientists at the University of Colorado has developed a way to better insulate double-paned glass used for windows by adding a transparent aerogel. In their paper published in the journal ...
Mar 17, 2023 report
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Energy & Green Tech
Hydrogen peroxide (H2O2) is a colorless liquid compound with strong oxidizing properties that can have numerous industrial and medical applications. This compound is generally synthesized through the anthraquinone process, ...
Mar 20, 2023 feature
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Robotics
Unmanned aerial vehicles (UAVs), also known as drones, can help humans to tackle a variety of real-world problems; for instance, assisting them during military operations and search and rescue missions, delivering packages ...
Mar 21, 2023 feature
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Energy & Green Tech
Lithium-ion batteries are ubiquitous today, but that does not mean that they are the best solution for all areas of application. TU Wien has now succeeded in developing an oxygen-ion battery that has some important advantages. ...
Mar 22, 2023
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302
Engineering
University of Minnesota Twin Cities researchers, along with a team at the National Institute of Standards and Technology (NIST), have developed a breakthrough process for making spintronic devices that has the potential to ...
Mar 20, 2023
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108
Energy & Green Tech
Hydrogen can be produced by electrolysis of water, ideally with solar cells or wind power providing the electrical energy required. This "green" hydrogen is expected to play an important role in the energy system of the future. ...
Mar 20, 2023
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969
Energy & Green Tech
Physicist Anders Carlsson, at Washington University in St. Louis, and Sid Redner of the Santa Fe Institute have created a new mathematical model to describe the most reliable, efficient and cost-effective way to harness solar ...
Mar 22, 2023
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Engineering
MechSE Associate Professor Kyle Smith and doctoral student Md Abdul Hamid recently published an article in the Journal of Power Sources.
Mar 21, 2023
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80
Energy & Green Tech
Research conducted by Purdue University's Vilas Pol Energy Research (ViPER) Group shows promise for developing high-energy-density rechargeable lithium-metal batteries and addressing the electrochemical oxidation instability ...
Mar 21, 2023
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Energy & Green Tech
Simon Fraser University professor Vincenzo Pecunia has led a team of more than 100 internationally-recognized scientists in creating a comprehensive "roadmap" to guide global efforts to convert waste energy into clean power.
Mar 22, 2023
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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
