image attenuation factor
51Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… …
52Amplificateur electronique — Amplificateur électronique Pour les articles homonymes, voir Amplificateur. Un amplificateur Hi Fi à tubes. Un amplificateur électronique (ou amplifica …
53Amplificateur Électronique — Pour les articles homonymes, voir Amplificateur. Un amplificateur Hi Fi à tubes. Un amplificateur électronique (ou amplifica …
54Amplificateur électronique — Pour les articles homonymes, voir Amplificateur. Un amplificateur Hi Fi à tubes. Un amplificateur électronique (ou amplificateur, ou ampli) est un système électronique …
55Amplificateurs — Amplificateur électronique Pour les articles homonymes, voir Amplificateur. Un amplificateur Hi Fi à tubes. Un amplificateur électronique (ou amplifica …
56Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun …
57Estrogen — Estriol. Note two hydroxyl ( OH) groups attached to the D ring (rightmost ring) …
58unit — 1. One; a single person or thing. 2. A standard of measure, weight, or any other quality, by multiplications or fractions of which a scale or system is formed. 3. A group of persons or things considered as a whole because of mutual activities or… …
59Distortion — This article is about technology, especially electrical engineering. For other uses, see Distortion (disambiguation). Distort redirects here. For other uses, see Distort (disambiguation). A distortion is the alteration of the original shape (or… …
60Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A …
