Energy & Green Tech
The constantly growing demand for energy storage is driving research and development in battery technology. The sodium-ion battery is a reliable and affordable replacement for lithium-ion batteries. The easy accessibility ...
Jan 12, 2024
0
80
Engineering
Picture a smartphone clad in a casing that's not just for protection but also doubles as a reservoir of electricity, or an electric car where the doors and floorboard store energy to propel it forward. Such technologies ...
Oct 5, 2023
0
216
Engineering
A project team led by Graz University of Technology (TU Graz) presents the prototype of a flywheel storage system, FlyGrid, that can store electricity locally and deliver it using fast-charging technology.
Jun 15, 2023
0
37
Consumer & Gadgets
Imagine heating your home from the ceiling, not from underfloor heating or radiators. Once installed like wallpaper, hi-tech infrared fabric emits heat in a similar way to the sun's rays. This could be a logical way to add ...
Feb 14, 2024
3
66
Energy & Green Tech
Researchers at the University of Colorado have developed a new and efficient way to produce green hydrogen or green syngas, a precursor to liquid fuels. The findings could open the door for more sustainable energy use in ...
Aug 17, 2023
0
123
Consumer & Gadgets
New research suggests that many households could break even on their solar panels investments as early as 2027, as solar electricity becomes a more competitive electricity source, according to scientists at the University ...
May 10, 2023
0
31
Energy & Green Tech
A European consortium on Wednesday said it had in a world first successfully tested a gas turbine fully powered by hydrogen, opening the way to slashing carbon emissions in energy-intensive industries like cement.
Oct 11, 2023
1
113
Energy & Green Tech
Perovskite solar cells designed by a team of scientists from the National University of Singapore (NUS) have attained a world record efficiency of 24.35% with an active area of 1 cm2. This achievement paves the way for cheaper, ...
Jun 22, 2023
0
1100
Engineering
A group of scientists have found compressed air energy storage systems to have the potential of replacing conventional electrochemical batteries as a cheaper alternative, and with better storage capacity that is even sufficient ...
Feb 5, 2024
0
86
Engineering
Often referred to as the "dream batteries," all-solid-state batteries are the next generation of batteries that many battery manufacturers are competing to bring to market. Unlike lithium-ion batteries, which use a liquid ...
Dec 4, 2023
0
108
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
