Automotive
In a sprawling circuit near Mount Fuji, a humble Corolla running on liquid hydrogen has made its racing debut, part of a move to bring the futuristic technology into the racing world and to demonstrate Toyota's resolve to ...
Jun 1, 2023
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13
Engineering
Transistors, semiconducting devices that regulate, amplify and generate the flow of electrical current, are central components of most electronics. Electronics engineers have been trying to develop increasingly smaller transistors, ...
May 31, 2023 feature
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76
Robotics
Imagine a world where science fiction meets reality, where cutting-edge technology brings to life the awe-inspiring scenes from movies like Prometheus. This is the groundbreaking research led by Dr. Fu Zhang, Assistant Professor ...
May 30, 2023
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519
Engineering
With summer temperatures soaring, the specter of water scarcity looms large. As a possible solution to increase the availability of clean, potable water, researchers at the Indian Institute of Science (IISc) have developed ...
May 30, 2023
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Energy & Green Tech
The next generation of sustainable energy technology might be built from some low-tech materials: rocks and the sun. Using a new approach known as concentrated solar power, heat from the sun is stored then used to dry foods ...
May 30, 2023
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40
Energy & Green Tech
It is the year 2035. In a world facing climate catastrophe, the human enterprise is powered by fields of wind farms, with turbine blades made from fast-growing grasses and the roots of a million-year-old fungus.
May 30, 2023
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Energy & Green Tech
Wind energy, an important renewable power source, has witnessed rapid growth in recent years due to its abundance, cleanliness, safety, and mature generation technology.
May 30, 2023
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Hardware
Data-intensive computing applications such as pattern recognition, video processing, database engines and network routers have drastically increased due to the rapid development of big data and artificial intelligence (AI), ...
May 30, 2023
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11
Energy & Green Tech
Researchers from The Hong Kong Polytechnic University (PolyU) have achieved a breakthrough power-conversion efficiency (PCE) of 19.31% with organic solar cells (OSCs), also known as polymer solar cells. This remarkable binary ...
May 29, 2023
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Engineering
It is estimated that 55% of the world's population resides in cities and that cities are directly responsible for around two-thirds of global energy consumption.
May 29, 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
