Engineering
Amidst the ongoing energy crisis and under the threat of climate change, exploiting renewable energy sources has quickly become a global necessity. Though our options are varied, solar energy seems to be our best bet—experts ...
Aug 27, 2024
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Energy & Green Tech
Global oil demand is unlikely to fall by 2050 despite progress on renewable energy, the US oil and gas giant ExxonMobil said Monday, pointing to rising population and demand for energy worldwide.
Aug 27, 2024
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Business
With the global push towards renewable energy, the role of critical minerals has never been more heightened. Silicon, in the form of quartz, is a fundamental ingredient for solar cells and other key technologies. It's emerging ...
Aug 26, 2024
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Energy & Green Tech
For the past decade, disordered rock salt has been studied as a potential breakthrough cathode material for use in lithium-ion batteries and a key to creating low-cost, high-energy storage for everything from cell phones ...
Aug 26, 2024
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Energy & Green Tech
Whirring wind turbines in India's Thar desert supply critical green energy for the world's most populous nation, but those living in their shadows say it comes at their expense.
Aug 26, 2024
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Business
New research from Griffith University provides crucial evidence that the early retirement of coal-fired power plants can be financially advantageous for investors, which is contrary to mainstream belief.
Aug 23, 2024
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Energy & Green Tech
With huge data centers set to drive up already outsized energy demand, the tiny city-state of Singapore is looking to Australia's deserts and Malaysia's rainforests for clean power.
Aug 23, 2024
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Energy & Green Tech
Though 2023 was a relatively slow year for new wind power deployment in the United States, the industry continues to see growth, solid performance, expanding supply chains, and attractive prices, according to a report prepared ...
Aug 22, 2024
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Energy & Green Tech
Lithium iron phosphate is one of the most important materials for batteries in electric cars, stationary energy storage systems and tools. It has a long service life, is comparatively inexpensive and does not tend to spontaneously ...
Aug 21, 2024
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Business
Wholesale prices in the New Zealand electricity market have soared over recent weeks, climbing as high as NZ$1,000 per megawatt hour. North Island pulp and paper plants have temporarily closed down because of the spike in ...
Aug 21, 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
