An actuator is the mechanism by which a control system acts upon an environment. The control system can be simple (a fixed mechanical or electronic system), software-based (e.g. a printer driver, robot control system), a human, or any other input.
Nomos or Nomoi may refer to: from the Greek term for law (Î½ÏÎ¼Î¿Ï, nÃ³mos; pl. Î½ÏÎ¼Î¿Î¹, nÃ³moi). It is the origin of the suffix -onomy, as in astronomy, economy, or taxonomy.
While the slide rule is intended to be a general-purpose device, a nomogram is designed to perform a specific calculation, with tables of values effectively built into the construction of the scales. Nomograms are typically used in applications where the level of accuracy they offer is sufficient and useful.