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Summary

'Energy' comes from Greek 'energeia', meaning 'work'. Energy effectively describes the force behind anything that happened, happens, will happen, and could happen. More strictly speaking, energy is the capability of work being achieved. This capability, of course, must be linked to something. Energy doesn't come from nowhere. That something is matter. 'Matter' comes from Latin 'materia', meaning 'physical substance'. Matter describes anything that exists physically. Traditionally, matter and energy were considered to be very different things. Matter has energy stored in them according to variables such as position (potential energy), which can be released in action (kinetic energy). As technology progressed, people learned to wield different forms of energy using matter. From simple mechanical tools, science evolved to thermal and chemical energy, then electrical and radiation energy. The study of radiation energy led to nuclear power and the convergence of matter and energy, allowing transformations into each other. They are still very different things, and are treated thusly, but modern science has used this relatively new knowledge to travel to new grounds.

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