Energy Summary
Evan-Moor Publishing

Nineteenth-Century Development of the Concept of Energy Overview The concept of energy is fundamental to the understanding of all physical motion, whether in nature or derived from humanity's t... Read more

Energy Energy is a fundamental physical element, which can be defined simply as: the capacity of a body or system to accomplish "work." Work is defined as: the result of a force being applied over som... Read more

Energy Transformations Energy is the capacity to do work or to produce heat. There are many forms of energy, each of which can be classified into three categories: radiant energy, kinetic energy, and ... Read more

Energy Transformations Energy is the capacity to do work or to produce heat. There are many forms of energy, each of which can be classified into three categories: radiant energy, kinetic energy, and ... Read more

Energy Energy, from the Greek energeia or activity, denotes the capacity of acting or being active. Aristotle used the term to denote the activity of tending toward or enacting a goal, which differs f... Read more

Units of Energy The joule, symbol J, is the unit of energy in the science community. It is not widely used outside the science community in the United States, but it is elsewhere. For example, in the ... Read more

Energy [addendum] Force is among the most fundamental concepts in Newtonian physics. Energy became an important unifying concept in nineteenth-century physics. Energy and force take on somewhat differ... Read more

Energy Energy is the capacity for doing work. In physics, "work" has a more formal definition than in everyday life: it means the ability to exert a force through a distance. If you pick... Read more