Renewable energy is the energy that can be replenished or regenerated. Primary energy can be renewable energy and non-renewable energy. Primary energy are converted by energy systems to yield secondary energy which are carried by energy carriers. Primary energy is the form of energy that is found in nature which has not been transformed or converted to other forms of energy. There are two sources of energy- primary energy sources (primary energy) and secondary energy sources (secondary energy). Sources of energy or energy sources refers to how and where the different types of energy are derived. This can be used in generating electricity. It is also called atomic energy because it is released from the nucleus of atoms. Nuclear energy is energy found in the centres of particles resulting from nuclear reaction as either nuclear fission, nuclear fusion or radioactive decay. It includes energy that is stored in food which acts as fuel for the body.

This is the type of energy that is found in molecules. This is energy due to temperature changes of which temperature is a measure of the degree of hotness or coldness of a body or system.

This is the type of energy that exist on surface and this type of energy is proportional to the surface area as seen in surface tension. It is an energy generated and propagated by mechanical vibrations through any mechanical medium. This is the energy due to sound detected by the ear. This is a type of energy that is detected by eyes. An example of radiant energyР’В is the source of energyР’В used in radiation therapy.

Radiant energyР’В is energyР’В that travels by waves or particles, particularly electromagnetic radiation such as heat or x-rays.

This is the energy due to movement of particles resulting to electrical charges moving through electrical wires. Thus the potential energy in springs is called elastic potential energy which form the basis of HookРІР‚в„ўs law which states that the force needed to extend or compress a spring by any distance is proportional to that distance. Potential energy also exist in springs which has elastic properties of compression and extension. The third potential energy field is the magnetic field that give rise to what can be called the magnetic energy which is energy that causes push or pull as observed in magnetic attraction(due to unlike charges) and magnetic repulsion(due to like charges).

The second force field is electrostatic field which give rise to electrostatic potential energy or electric potential energy which according to Wikipedia is defined as a potentialР’В energy, measured in joules, that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within aР’В defined system. The first force field in which potential energy exist is gravitational fields and the energy derived from this field is called gravitational energy (the energy stored in objects when above the earthРІР‚в„ўs surface). It should be noted that potential energy exist in different three force fields. While potential energy is energy due to position (stored energy) on the other hand kinetic energy is energy due to motion or commonly referred to as energy in motion (energy of movement). This is a type of energy made of potential energy and kinetic energy. In the course of this article the different forms of energy identified are as follows. Generally, energy is the ability for a body or system to perform work. The meaning of energy or definition of energy differs and so its meaning is based on different contexts in which it is used. What is Energy? Meaning of Energy or Definition of Energy

Radiant energy examples