extinction ratio

extinction ratio
коэффициент поглощения (в оптическом волокне)

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  • Extinction ratio — In telecommunications, extinction ratio ( r e ) is the ratio of two optical power levels, of a digital signal generated by an optical source, e.g., a laser diode, where P 1 is the optical power level generated when the light source is on, and P 2 …   Wikipedia

  • Extinction (astronomy) — Extinction is a term used in astronomy to describe the absorption and scattering of electromagnetic radiation by matter (dust and gas) between an emitting astronomical object and the observer. Interstellar extinction also called Galactic… …   Wikipedia

  • Extinction event — …   Wikipedia

  • Extinction Des Espèces — Pour les articles homonymes, voir Extinction. Les mécanismes de l évolution biologique Mécanismes non aléatoires …   Wikipédia en Français

  • Extinction d'espèces — Extinction des espèces Pour les articles homonymes, voir Extinction. Les mécanismes de l évolution biologique Mécanismes non aléatoires …   Wikipédia en Français

  • Extinction des especes — Extinction des espèces Pour les articles homonymes, voir Extinction. Les mécanismes de l évolution biologique Mécanismes non aléatoires …   Wikipédia en Français

  • Extinction vortex — Extinction vortices are a class of models through which conservation biologists, geneticists and ecologists can understand the dynamics of and categorize extinctions in the context of their causes. Developed by M. E. Gilpin and M. E. Soulé in… …   Wikipedia

  • Extinction des espèces — Pour les articles homonymes, voir Extinction. Les mécanismes de l évolution biologique Mécanismes non aléatoires  …   Wikipédia en Français

  • Permian–Triassic extinction event — …   Wikipedia

  • Quaternary extinction event — Late Pleistocene landscape of northern Eurasia The Quaternary period saw the extinctions of numerous predominantly larger, especially megafaunal, species, many of which occurred during the transition from the Pleistocene to the Holocene epoch.… …   Wikipedia

  • Mass-to-light ratio — In astrophysics and physical cosmology the mass to light ratio, normally designated with the symbol Υ[1] is the quotient between the total mass of a spatial volume (typically on the scales of a galaxy or a cluster) and its luminosity. These… …   Wikipedia


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