Absorption Interstellaire — L absorption interstellaire désigne la quantité de lumière absorbée par le milieu interstellaire et les poussières le long de la ligne de visée d une étoile ou d un objet céleste donnés en astronomie. L absorption est un effet chromatique,… … Wikipédia en Français
Diffuse optical imaging — (DOI) or diffuse optical tomography (DOT) is a medical imaging modality which uses near infrared light to generate images of the body. The technique is sensitive to the optical absorption of some components of the body, such as oxy hemoglobin and … Wikipedia
Absorption — (lat., »Ein , Aufsaugung«). 1) Die A. der Gase durch Flüssigkeiten ist im allgemeinen bei niederer Temperatur größer als bei höherer und wird sehr stark durch den Druck beeinflußt. 1 Lit. Wasser verschluckt bei 15° stets 1 L. Kohlensäure, unter… … Meyers Großes Konversations-Lexikon
Diffuse reflectance infrared fourier transform — Spectroscopy (DRIFTS)[1] is an infrared spectroscopy spectra technique used on powder samples with no preparation. The sample is added to a sample cup and the data is collected on the bulk sample. The infrared light on a sample is reflected and… … Wikipedia
Diffuse interstellar band — Relative strengths of observed diffuse interstellar bands Diffuse interstellar bands (DIBs) are absorption features seen in the spectra of astronomical objects in our galaxy. They are caused by the absorption of light by the interstellar medium.… … Wikipedia
Diffuse Reflexion — Von Reflexion (lat. reflectere: zurückbeugen, drehen) spricht man, wenn Wellen, zum Beispiel elektromagnetische oder Schallwellen, vollständig oder teilweise von einer Oberfläche zurückgeworfen werden. Wasserspiegelung (Reflexion) des Matterhorns … Deutsch Wikipedia
Absorption des rayons X — Spectrométrie d absorption des rayons X La spectrométrie d absorption des rayons X aide à déterminer la structure d un matériau. Elle a l avantage d être sélective quant à l espèce atomique observée. Sommaire 1 Histoire 2 Dispositif expérimental … Wikipédia en Français
Absorption (pharmacokinetics) — In pharmacology (and more specifically pharmacokinetics), absorption is the movement of a drug into the bloodstream. Absorption involves several phases. First, the drug needs to be introduced via some route of administration (oral, via the skin,… … Wikipedia
Absorption band — An absorption band is a range of wavelengths (or, equivalently, frequencies) in the electromagnetic spectrum which are able to excite a particular transition in a substance. See absorption spectrum. Since energetic transitions can take place in… … Wikipedia
Diffuse sky radiation — A spectrum taken of blue sky clearly showing solar Fraunhofer lines and atmospheric water absorption band. Diffuse sky radiation is solar radiation reaching the Earth s surface after having been scattered from the direct solar beam by molecules… … Wikipedia