The term 'Parts of Joules' can refer to the two units of energy, ergs and joules. Ergs are a unit of energy equal to one dyne-centimeter, or the amount of energy required to move a force of one dyne over a distance of one centimeter. Joules, on the other hand, are a unit of energy equal to one newton-meter, or the amount of energy required to move a force of one newton over a distance of one meter. Both ergs and joules are used to measure energy, but joules are more commonly used in scientific contexts.