theoretical frequency
121Sampling (signal processing) — Signal sampling representation. The continuous signal is represented with a green color whereas the discrete samples are in blue. In signal processing, sampling is the reduction of a continuous signal to a discrete signal. A common example is the …
122Optical resolution — This article is about optical resolution in optics. For the method of separating enantiomers in chemistry, see Chiral resolution. Optical resolution describes the ability of an imaging system to resolve detail in the object that is being imaged.… …
123Doubly-fed electric machine — Doubly fed electric machines (i.e., electric motors or electric generators) belong to a category of electric machines that incorporate two multiphase winding sets of similar power rating that have independent means of excitation. As a result,… …
124Modes of mechanical ventilation — Contents 1 Positive and negative pressure ventilation 1.1 Negative pressure ventilation 1.1.1 Types of negat …
125Albert Einstein — Einstein redirects here. For other uses, see Einstein (disambiguation) …
126Industrial and organizational psychology — Psychology …
127Quantum mechanics — For a generally accessible and less technical introduction to the topic, see Introduction to quantum mechanics. Quantum mechanics …
128Chess endgame — In chess and chess like games, the endgame (or end game or ending) is the stage of the game when there are few pieces left on the board. The line between middlegame and endgame is often not clear, and may occur gradually or with the quick… …
