Factory pattern should be used when: - a framework delegate the creation of objects derived from a common superclass to the factory - we need flexibility in adding new types of objects that must be created by the class. Along with singleton pattern the factory is one of the most used patterns.
In thermodynamics, the term exothermic process (exo- : outside) describes a process or reaction that releases energy from the system to its surroundings, usually in the form of heat, but also in a form of light (e.g. a spark, flame, or flash), electricity (e.g. a battery), or sound (e.g. explosion heard when burning hydrogen).
Nuclear energy â the energy stored in the nucleus (centre) of an atom17. Energy is released when either the nucleus is split apart (called nuclear fission18) or when nuclei19 are combined (nuclear fusion20). Power21 plants that use nuclear power do so by the fission of uranium atoms.