Electronics & Semiconductors
Over the past few decades, the performance of machine learning models on various real-world tasks has improved significantly. Training and implementing most of these models, however, still requires vast amounts of energy ...
Jan 9, 2023 feature
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234
Engineering
Organic photovoltaics, solar energy devices based on organic semiconductors, have so far achieved very promising results in experimental settings, both in terms of efficiency and stability. However, engineers have not yet ...
Nov 9, 2022 feature
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101
Electronics & Semiconductors
Electronics engineers worldwide are trying to improve the performance of devices, while also lowering their power consumption. Tunnel field-effect transistors (TFETs), an experimental class of transistors with a unique switching ...
Nov 7, 2022 feature
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131
Energy & Green Tech
Recent advancements in the development of machine learning and optimization techniques have opened new and exciting possibilities for identifying suitable molecular designs, compounds, and chemical candidates for different ...
Sep 15, 2022 feature
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90
Electronics & Semiconductors
Machine learning architectures based on convolutional neural networks (CNNs) have proved to be highly valuable for a wide range of applications, ranging from computer vision to the analysis of images and the processing or ...
Sep 1, 2022 feature
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78
Energy & Green Tech
Reducing energy demand worldwide can play a critical role in meeting international climate targets and effectively tackling climate change. Ultimately, such efforts could relieve some of the pressure on governments to decarbonize ...
Jul 18, 2022 feature
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57
Energy & Green Tech
Lightweight and flexible perovskites are highly promising materials for the fabrication of photovoltaics. So far, however, their highest reported efficiencies have been around 20%, which is considerably lower than those of ...
Jul 6, 2022 feature
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71
Energy & Green Tech
In recent years, engineers worldwide have been trying to devise new battery and energy storage technologies that are more sustainable and cost-effective. One of the solutions attracting particular interest is sodium-based ...
Jun 29, 2022 feature
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913
Energy & Green Tech
In recent years, engineers have developed a growing number of alternative energy solutions that source electricity sustainably from sunlight, water, wind, hydrogen and other natural resources. For these technologies to fully ...
Jun 13, 2022 feature
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122
Energy & Green Tech
In recent years, engineers have been developing a wide range of new battery technologies and solutions. One of these are redox flow batteries, devices that can store electrochemical energy by converting chemical energy into ...
May 27, 2022 feature
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67
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
