Energy
In physics, energy is a property of objects, transferable among them via fundamental interactions, which can be converted into different forms but not created or destroyed. The joule is the SI unit of...
Energy - Wikipedia
All of the electric trains in the Netherlands are completely powered by wind energy.
All of the electric trains in the Netherlands are completely powered by wind energy.
Can We Rely on Wind and Solar Energy?
Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like...
Making metallic hydrogen at Harvard
Nearly a century after it was theorized, Harvard scientists have succeeded in creating metallic hydrogen. In addition to helping scientists answer fundamenta...
Scientists Turn Nuclear Waste Into Long-Lived Diamond Batteries
The diamonds are made from radioactive graphite and can generate a small electric current for thousands of years.
Quantum Physicists Probe Fabric of Spacetime to Solve Mystery of Dark Energy
One of the great mysteries of the cosmos is why it is expanding at an apparently accelerating rate. Physicists have suggested an outward force, dubbed "dark energy," causes this expansion, but they ha...
This Could be the End for Big Oil
Stunning breakthrough in chemical engineering has unleashed a massive supply of fuel… Enough fuel, in fact, to power the entire globe for over 36,000 years. It’s poised to decimate Big Oil’s obscene p...
Some Cities Are Taking Another Look At LED Lighting After AMA Warning
If people are sleepless in Seattle, it may not be only because they have broken hearts. First-generation high-intensity models emit light that may disturb sleep, raise health risks.
The Pressure Is On To Make Metallic Hydrogen
Scientists are getting close to turning hydrogen into a metal — both in liquid form and maybe even solid form. The rewards, if they pull it off, are worth the effort.
BBC Future - The secretive, billionaire-backed plans to harness fusion
The founders of Amazon and Microsoft are putting their fortunes into little-known fusion energy companies - and it has strange parallels with fiction.
Potato battery new and improved Video Reuters
A potato battery can light up a room for over a month.
Five Little Things You Can Do to Make Your Home More Energy Efficient
An informative article about improving the energy efficiency of a house.
An Hour Every Day Workout Can Power Your Home For Twenty-Four Hours
What if you could power your house for an entire day just by exercising for an hour, would that motivate you to do it? I just love this idea, it could even become something that can be done as a famil...
From Allergens To Anodes: Pollen Derived Battery Electrodes
Pollens, the bane of allergy sufferers, could represent a boon for battery makers: Recent research has suggested their potential use as anodes in lithium-ion batteries. 'Our findings have demonstrated...
History of energy
The word energy derives from Greek ἐνέργεια (energeia), which appears for the first time in the work Nicomachean Ethics of Aristotle in the 4th century BCE. The concept of energy emerged from the idea...
Forms of energy
In the context of physical sciences, several forms of energy have been identified. These include:Some entries in the above list constitute or comprise others in the list. The list is not necessarily ...
Potential energy
In physics, potential energy is the energy that an object has due to its position in a force field or that a system has due to the configuration of its parts. Common types include the gravitational po...
Potential energy - Wikipedia
Kinetic energy
In physics, the kinetic energy of an object is the energy that it possesses due to its motion.It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Ha...
Kinetic energy - Wikipedia
Thermal energy
In thermodynamics, thermal energy refers to the internal energy present in a system by virtue of its temperature. The average translational kinetic energy possessed by free particles in a system of ...
Internal energy
In thermodynamics, the internal energy is one of the two cardinal state functions of the state variables of a thermodynamic system. It refers to energy contained within the system, while excluding the...
Chemical energy
In chemistry, Chemical energy is the potential of a chemical substance to undergo a transformation through a chemical reaction or, to transform other chemical substances. Examples include batteries, l...
Nuclear binding energy
Nuclear binding energy is the energy required to split the nucleus of an atom into its component parts. The component parts are neutrons and protons, which are collectively called nucleons. The bind...
Bioenergetics
Bioenergetics is a field in biochemistry that concerns energy flow through living systems. This is an active area of biological research that includes the study of thousands of different cellular proc...
Units of energy
Because energy is defined via work, the SI unit for energy is the same as the unit of work – the joule (J), named in honor of James Prescott Joule and his experiments on the mechanical equivalen...
Energy conversion
Energy transformation or energy conversion is the process of changing one form of energy to another. In physics, the term energy describes the capacity to produce certain changes within a system, wit...
Energy conversion - Wikipedia
Conservation of energy
Prof. Walter Lewin demonstrates the conservation of mechanical energy, touching a wrecking ball with his jaw. (MIT Course 8.01)In physics, the law of conservation of energy states that the total ene...
Conservation of energy - Wikipedia
Mass-energy equivalence
In physics, mass–energy equivalence is the concept that the mass of an object or system is a measure of its energy content. For instance, adding 25 kilowatt-hours (90 megajoules) of any for...
Mass-energy equivalence - Wikipedia
Zero-point energy
Zero-point energy, also called quantum vacuum zero-point energy, is the lowest possible energy that a quantum mechanical physical system may have; it is the energy of its ground state. All quantum mec...