excitation curve
61Self-pulsation — takes place at the beginning of laser action.As the pump is switched on, the gainin the active medium rises and exceeds the steady state value. The number of photons in the cavity increases, depleting the gain below the steady state value, and so …
62Солнечная система — в представлении художника. Масштабы расстояний от Солнца не соблюдены. Общие характеристики Возраст …
63Magnetic field — This article is about a scientific description of the magnetic influence of an electric current or magnetic material. For the physics of magnetic materials, see magnetism. For information about objects that create magnetic fields, see magnet. For …
64Transmission line — This article is about the radio frequency transmission line. For the power transmission line, see electric power transmission. In communications and electronic engineering, a transmission line is a specialized cable designed to carry alternating… …
65Circulatory system — This article is about the organ system. For the band, see Circulatory System. For transport in plants, see Vascular tissue. Circulatory system …
66Double pendulum — A double pendulum consists of two pendulums attached end to end. In mathematics, in the area of dynamical systems, a double pendulum is a pendulum with another pendulum attached to its end, and is a simple physical system that exhibits rich… …
67Magnetic amplifier — The magnetic amplifier (colloquially known as a mag amp ) is an electromagnetic device for amplifying electrical signals. The magnetic amplifier was invented early in the 20th century, and was used as an alternative to vacuum tube amplifiers… …
68NSB El 9 — El 9 El 9.2063 is preserved a …
69Bethe formula — The Bethe formula describes the energy loss per distance travelled of swift charged particles (protons, alpha particles, atomic ions, but not electrons) traversing matter (or, alternatively, the stopping power of the material). The non… …
70Machine vision optical filters — are optical filters used in machine vision applications.Choosing the correct optical filter for machine visionMany of those developing machine vision applications know that considerable emphasis has been placed on choosing the correct lighting to …
