Miroir
Un miroir est un objet possédant une surface suffisamment polie pour qu’une image s’y forme par réflexion et conçu à cet effet. C’est souvent une couche métallique fine, qui, pour être protégée, est placée sous une plaque de verre pour les miroirs domestiques (les miroirs utilisés dans les instruments d’optiques comportent la face métallique au-dessus, le verre n’étant qu’un support de qualité mécanique stable).
Mirror
A mirror is an object that reflects light or sound in a way that preserves much of its original quality prior to its contact with the mirror. Some mirrors also filter out some wavelengths, while preserving other wavelengths in the reflection. This is different from other light-reflecting objects that do not preserve much of the original wave signal other than color and diffuse reflected light. The most familiar type of mirror is the plane mirror, which has a flat surface. Curved mirrors are also used, to produce magnified or diminished images or focus light or simply distort the reflected image.
Mirrors are commonly used for personal grooming or admiring oneself (in which case the archaic term looking-glass is sometimes still used), decoration, and architecture. Mirrors are also used in scientific apparatus such as telescopes and lasers, cameras, and industrial machinery. Most mirrors are designed for visible light; however, mirrors designed for other types of waves or other wavelengths of electromagnetic radiation are also used, especially in non-optical instruments.
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Paris Septembre 2011
By Pascal Osten
Paris
By Jean Lebreton
New-York City
Burqa
A Burqa is a piece of clothing. It is for women. They can wear it as an outer garment. It only leaves a semi-transparent mesh in front of the woman’s eyes, so she can see. The rest of the body is covered by it.
Other garments for women, that cover less of their body are the hijab and the niqab.
Burqa
La burqa (en pachto, برقع), parfois orthographié burka, ou plus rarement bourka, est un voile intégral d’origine afghane porté par les femmes principalement en Afghanistan, au Pakistan et en Inde.
En France, le mot a été utilisé improprement par des politiques et journalistes au cours du débat sur la légalité du port du voile intégral islamique, le niqab, comme synonyme de ce dernier.
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By Jean Lebreton
New-York City
Marseille Août 2011
By Pascal Osten
Paris
Lumière
La lumière est l’ensemble des ondes électromagnétiques visibles par l’œil humain, c’est-à-dire comprises dans des longueurs d’onde de 380 nm (violet) à 780 nm (rouge). La lumière est intimement liée à la notion de couleur. C’est Isaac Newton qui propose pour la première fois au XVIIe siècle un cercle des couleurs chromatiques fondé sur la décomposition de la lumière blanche. Elle peut se mesurer en lux.
Light
Light or visible light is the portion of electromagnetic radiation that is visible to the human eye, responsible for the sense of sight. Visible light has a wavelength in a range from about 380 or 400 nanometres to about 760 or 780 nm, with a frequency range of about 405 THz to 790 THz. In physics, the term light often comprises the adjacent radiation regions of infrared (at lower frequencies) and ultraviolet (at higher), not visible to the human eye.
Primary properties of light are intensity, propagation direction, frequency or wavelength spectrum, and polarisation, while its speed, about 300,000,000 meters per second (300,000 kilometers per second) in a vacuum, is one of the fundamental constants of nature.
Light, which is emitted and absorbed in tiny “packets” called photons, exhibits properties of both waves and particles. This property is referred to as the wave–particle duality. The study of light, known as optics, is an important research area in modern physics.
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By Pascal Osten
Paris
By Jean Lebreton
New-York City
Television
Television (TV) is a telecommunication medium for transmitting and receiving moving images that can be monochromatic (shades of grey) or multicolored. Images are usually accompanied by sound. “Television” may also refer specifically to a television set, television programming, television transmission.
The etymology of the word is derived from mixed Latin and Greek origin, meaning “far sight”: Greek tele (τῆλε), far, and Latin visio, sight (from video, vis- to see, or to view in the first person.
Télévision
La télévision est un ensemble de techniques destinées à émettre et recevoir des séquences audiovisuelles, appelées programmes (émissions, films et séquences publicitaires).
La transmission de ces programmes peut se faire par ondes radioélectriques ou par réseau câblé. L’appareil permettant d’afficher les programmes est un téléviseur, ou, par métonymie, une télévision, ou par apocope télé.
La télévision, est tributaire d’un réseau économique (publicité, redevance), politique et culturel (langues nationales ou régionales, genres et formats).
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