Helmet
A helmet is a form of protective gear worn on the head to protect it from injuries.
Ceremonial or symbolic helmets (e.g., English policeman’s helmet) without protective function are sometimes used. The oldest known use of helmets was by Assyrian soldiers in 900BC, who wore thick leather or bronze helmets to protect the head from blunt object and sword blows and arrow strikes in combat. Soldiers still wear helmets, now often made from lightweight plastic materials.
In civilian life, helmets are used for recreational activities and sports (e.g., jockeys in horse racing, American football, ice hockey, cricket, baseball, and rock climbing); dangerous work activities (e.g., construction, mining, riot police); and transportation (e.g., Motorcycle helmets and bicycle helmets). Since the 1990s, most helmets are made from resin or plastic, which may be reinforced with fibers such as aramids.
Casque
Un casque est une pièce d’armure ou un équipement de protection individuelle destiné à protéger la tête contre les conséquences d’un traumatisme crânien. Les casques sont souvent munis d’une sangle évitant la chute du casque ; jugulaire (la sangle passe sous le menton) ou mentonnière (la sangle passe sur la pointe du menton).
Initialement, les casques étaient en métal. De nos jours, ils sont faits de matière plastique (moulés) ou de matériaux composites (moulés ou fabriqués par couches successives - fibre de verre, Kevlar, ou fibre de carbone), ce qui permet de les rendre plus légers.
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By Jean Lebreton
New-York City
By Pascal Osten
Champs-Elysées - Paris
Grue
La grue est un appareil de levage et de manutention réservé aux lourdes charges ; les entreprises de génie civil emploient couramment un type de grue particulier, démontable et utilisable en milieu urbain : la grue de chantier.
Crane
A crane is a type of machine, generally equipped with a hoist, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally. It is mainly used for lifting heavy things and transporting them to other places. It uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability of a man. Cranes are commonly employed in the transport industry for the loading and unloading of freight, in the construction industry for the movement of materials and in the manufacturing industry for the assembling of heavy equipment.
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By Pascal Osten
Musée Beaubourg - Metz
By Jean Lebreton
New-York City - Red Hook - Brooklyn
Girl
A girl is any female human from birth through childhood and adolescence to attainment of adulthood when she becomes a woman. The term may also be used to mean a young woman.
Fille
Une fille désigne communément une jeune personne de sexe féminin. En général, ce terme s’emploie pour une enfant ou une adolescente et couramment aussi pour une adulte non mariée.
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By Jean Lebreton
New-York City - Chelsea
By Pascal Osten
Paris
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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