In chemistry, energy, the power for doing work through the motion of an atom or molecule. It can exist in chemical potential, kinetic, potential, electrical, chemical, atomic, and other various types. There are also, other types of energy, e.g., energy during the process of electric transfer between one body and another. In engineering and other scientific disciplines, energy is used to describe the amount of effort required to move an object from a point A to a point B. Some other examples of energy are light, heat, sound, electromagnetic radiation, and action potential.
The different forms of energy can be classified according to their ability to be transformed without changing their state of mass or composition. Kinetic energy is directly associated with the velocity of an object, which can be defined as the rate with which it moves with time. This form of energy is derived from the interaction between two bodies, whether these are solids or liquids. Kinetic energy is the energy that are changed due to the change in velocity, and it can be extracted by a device that employs magnets or other means.
There is also a form of gravitational energy, which is obtained when a body exerts a pressure on another body at a particular point. This form of gravitational energy is known as the potential energy. Potential energy is measured by the amount of force that is exerted by an object on its neighboring objects. The gravitational potential energy of a planet rotating around its sun is much larger than the solar system’s entire potential energy, because the gravitational potential energy of a rotating planet is a multiple of the total gravitational potential energy of the solar system.
The other major form of energy is thermal energy. Thermal energy comes from matter that is hot; examples of such matter are lava, steam, and the fuel gases used in engines. The amount of thermal energy encountered by a body depends on its temperature. Hot matter has more thermal energy than colder matter, and it spirals down to cooler temperatures. The colder it gets, the less thermal energy is available. Heat convection is a mechanism by which heated objects move from hotter regions to cooler areas, and the convective process generates heat energy.
One form of alternative energy is magnet energy. Magnets have the property that they repel each other, and they do so in such a way as to create a magnetic field. The attraction-repulsion relationship of magnets with each other and the relative movement of electric ions in aqueous media that surround them give rise to a powerful electric current. Ionized magnets have been used to create small generators that produce electricity; a commercial generator powered by ionized magnets has been installed at the Large Hadron Collider (LHC), a collaboration among European research laboratories.
Another example of nonrenewable energy is gravitational energy. Gravity energy can be harnessed through the use of large, spinning devices, like spiders or gyroscopes. The spins of these devices tend to attract particles that come nearby, and the particles are pushed by the momentum carried by the device. This type of energy does not need any replenishing, and researchers have even managed to miniaturize these devices for use in space, where mini versions may power an airplane.