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background absorption

См. также в других словарях:

  • Absorption spectroscopy — An overview of electromagnetic radiation absorption. This example discusses the general principle using visible light as a specific example. A white beam source – emitting light of multiple wavelengths – is focused on a sample (the complementary… …   Wikipedia

  • background —    Apparent absorption caused by anything other than the substance for which the analysis is being made …   Forensic science glossary

  • ALIYAH AND ABSORPTION — GENERAL SURVEY Introduction Aliyah, ascension or going up, is the coming of Jews as individuals or in groups, from exile or diaspora to live in the Land of Israel. Those who go up for this purpose are known as olim – a term used in the Bible for… …   Encyclopedia of Judaism

  • Cosmic microwave background radiation — CMB and Cosmic background radiation redirect here. For other uses see CMB (disambiguation) and Cosmic background (disambiguation). Physical cosmology …   Wikipedia

  • Atomic absorption spectroscopy — In analytical chemistry, atomic absorption spectroscopy is a technique for determining the concentration of a particular metal element in a sample.cite book |author=Sperling, Michael B.; Welz, Bernhard |title=Atomic Absorption Spectrometry… …   Wikipedia

  • Cosmic infrared background — (CIB) is a mysterious infrared light coming from outer space. It is slowly being resolved into specific sources by infrared telescopes. In some ways it is analogous to the cosmic microwave background, but at shorter wavelengths. Contents 1… …   Wikipedia

  • Tunable diode laser absorption spectroscopy — (TDLAS) is a technique for measuring the concentration of certain species such as methane, water vapor and many more, in a gaseous mixture using tunable diode lasers and laser absorption spectrometry. The advantage of TDLAS over other techniques… …   Wikipedia

  • Two-photon absorption — (TPA) is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy electronic state. The energy difference between the involved… …   Wikipedia

  • Timeline of cosmic microwave background astronomy — Timeline of cosmic microwave background astronomyThermal (non microwave background) temperature predictions* 1896 Charles Edouard Guillaume estimates the radiation of the stars to be 5.6K. [Guillaume, C. E., 1896, La Nature 24, series 2, p. 234,… …   Wikipedia

  • Near edge X-ray absorption fine structure — NEXAFS (Near Edge X ray Absorption Fine Structure) is an element specific electron spectroscopic technique which is highly sensitive to bond angles, bond lengths and the presence of adsorbates. It is widely used in surface science and has also… …   Wikipedia

  • Атомно-абсорбционная спектроскопия с источником сплошного спектра — Атомно абсорбционные спектрометры (ААС) с источником сплошного спектра  приборы, предназначенные для проведения количественного элементного анализа по атомным спектрам поглощения, основанные, в отличие от традиционных атомно абсорбционных… …   Википедия

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