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).
Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic. Key Terms. endothermic: A description of a chemical reaction that absorbs heat energy from its surroundings. enthalpy: In thermodynamics, a measure of the heat content of a chemical or physical system.