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Visor
A visor (also spelled vizor) is a surface that protects the eyes, such as shading them from the sun or other bright light or protecting them from objects. Nowadays many visors are transparent, but before strong transparent substances such as polycarbonate were invented, visors were opaque like a mask * The part of a helmet in a suit of armor that protects the eyes. *A type of headgear consisting only of a visor and a band as a way to fasten it around the head. *Any such vertical surface on any hat or helmet. *Any such horizontal surface on any hat or helmet (called a '' peak'' in British English). *A device in an automobile A car or automobile is a motor vehicle with wheels. Most definitions of ''cars'' say that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people instead of goods. The year 1886 is regarded ... that the driver or front passenger can lower over part of the windshield to block the sun ( sun visor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sun Visor
A sun visor is a component of an automobile located on the interior just above the windshield (also known as the windscreen). They are designed with a hinged flap that is adjustable to help shade the eyes of drivers and passengers from the glare of sunlight. Design Starting in 1924, automobiles such as the Ford Model T began to include an exterior sun visor on its closed body versions. Other early automobiles also had externally attached sun visors to their windshields until 1931, when interior mounts were introduced. As automobile design advanced with windshields mounted on an angle to lessen wind resistance, the outside or "cadet-type" sun visors were no longer seen on cars starting from 1932. Henceforth, sun visors were mounted inside the vehicle, making the hinged flap easier to reach and adjust. Most modern cars have two sun visors, one for the driver's side and a second for the passenger's side, with the rear-view mirror often mounted in between the two sun visors. Each ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visor (armor)
A visor was an armored covering for the face often used in conjunction with Late Medieval war helmets such as the bascinet or sallet. The visor usually consisted of a hinged piece of steel that contained openings for breathing and vision. Appropriately, ''breaths'' refers to the holes in the metal of the visor. Visors protected the face during battle and could be remarkably durable. One surviving artifact was found to be "equivalent in hardness to cold worked high speed steel." History The first recorded European reference to a helmet's visor in the Middle Ages is found in the 1298 will of Odo de Roussillon, which speaks of "a ''heume a vissere.''" Whether this statement refers to a pivoting visor or a fixed faceplate is not clear; but by the early fourteenth century artistic depictions of moving visors appear quite frequently. The popularization of the visor also increased the practical value of armorial surcoats in battle, since when the visor was down "it was no longer possi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eyeshield
An eyeshield is a piece of football equipment that is also referred to as a visor that was created in the 1980s. In the mid 1990s as an effort to prevent brain and head injuries, headgear became mandatory in the game of football. The eyeshield was created to protect the eyes of football players during games and practices. It is a curved piece of plastic that attaches to the front of a football helmet. Safety equipment such as the facemask, eyeshields, and other face shields have been adopted over time to prevent player injury. The eyeshield leaves the mouth exposed, but covers the eyes and nose. The piece of equipment is made from various materials and by many different brands. Only clear eyeshields are permitted for use in high school football games due to the fact that eyes are needed to be seen while checking for a concussion. For college level players, the eyeshield may be tinted for players with eye problems. Production The first football visors were made by Oakley. Eyesh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peaked Cap
The peaked cap, peaked hat, service cap, barracks cover or combination cap is a form of headgear worn by the armed forces of many nations, as well as many uniformed civilian organisations such as law enforcement agencies and fire departments. It derives its name from its short visor, or peak, which was historically made of polished leather but increasingly is made of a cheaper synthetic substitute. The term forage cap is also used though that also applies to "field service cap" or the side cap. Other principal components are the crown, band and insignia, typically a cap badge and embroidery in proportion to rank. Piping is also often found, typically in contrast to the crown colour, which is usually white for navy, blue for air force and green for army. The band is typically a dark, contrasting colour, often black, but may be patterned or striped. In the British Army, each regiment and corps has a different badge. In the United States Armed Forces, the cap device is unifor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Eyeshade
Green eyeshades are a type of visor that were worn most often from the late 19th century to the mid-20th century by accountants, telegraphers, copy editors and others engaged in vision-intensive, detail-oriented occupations to lessen eye strain due to early incandescent lights and candles, which tended to be harsh (the classic banker's lamp had a green shade for similar reasons). Because they were often worn by people involved in accounting, auditing, economics, and budgeting, they became associated with these activities. Green eyeshades were often made of a transparent dark green or blue-green colored celluloid, although leather and paper were used to make the visor portion as well. One manufacturer, the Featherweight Eyeshade Company, described their eyeshade as "healthful, color peculiarly restful to the eyes". Green eyeshades are still on the market, typically sold as "dealer's visors". They retain some popularity in the gambling community. Several individuals, including Wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visor (ice Hockey)
A hockey helmet is worn by players of ice hockey, inline hockey, and bandy to help protect the head from potential injury when hit by the puck, sticks, skates, boards, other players, or the ice. The shell of a hockey helmet is generally made of a substance called vinyl nitrile that disperses force from the point of contact, while the liner may be made of either vinyl nitrile foam, expanded polypropylene foam, or other material to absorb the energy, to reduce the chances of concussion. Hockey helmets grip the head from inside by cupping the back of head, or the occipital protuberance. Helmet manufacturers will have a chart that relates their helmet sizes to head measurements. Mt on older models, the helmet size is adjusted by loosening the screws on the side to slide the front portion forward or back. Visors and shields A visor or face shield in ice hockey is a device attached to the front of a helmet to reduce potential of injury to the face. Visors cover the upper half of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorcycle Helmet
A motorcycle helmet is a type of helmet used by motorcycle riders. Motorcycle helmets contribute to motorcycle safety by protecting the rider's head in the event of an impact. They reduce the risk of head injury by 69% and the risk of death by 42%. Their use is required by law in many countries. Motorcycle helmets consist of a polystyrene foam inner shell that absorbs the shock of an impact, and a protective plastic outer layer. Several variations exist, notably helmets that cover the chin area and helmets that do not. Some helmets provide additional conveniences, such as ventilation, face shields, sun visors, ear protection or intercom. Origins The origins of the crash helmet date back to the Brooklands race track in early 1914, when a medical officer, Dr. Eric Gardner, noticed he was seeing a motor cyclist with head injuries about every two weeks. He got a Mr. Moss of Bethnal Green to make canvas and shellac helmets stiff enough to stand a heavy blow and smooth enough to gla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eye Protection
Eye protection is protective gear for the eyes, and sometimes face, designed to reduce the risk of injury. Examples of risks requiring eye protection can include: impact from particles or debris, light or radiation, wind blast, heat, sea spray or impact from some type of ball or puck used in sports. Eye protection are typically separated into categories based on the style of eye wear and the hazard they are designed to reduce. There categories include: Spectacles with side protection; Goggles; Welding helmet; Welding Hand Shields; Non-Rigid Helmets (hoods); Face shield; and Respirator Face pieces. Styles Spectacles Safety glasses or spectacles, although often used as a catch-all term for all types of eye protection, specifically revers to protective equipment that closely resembles common eye wear. To meet most national standards, spectacles must include side shields to reduce the ability of debris to get behind the lenses from the side. Safety glasses can often m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sports Visor
A sports visor, also called a sun visor or visor cap, is a type of crownless hat consisting simply of a visor or brim with a strap or buckle encircling the head. The top of the head is not covered and the visor protects only the face, including eyes, nose, and cheeks, from the sun. The visor portion of a sun visor may be either curved or flat and the strap is often equipped with an adjustable velcro fastener in back. The strap can function as a sweatband although usually not. This type of headgear was designed for use in outdoor sports (especially golf, tennis, volleyball, and softball) where eye protection from direct sunlight is desirable, while the missing crown allows for ventilation. It is now often used by non-athletes at beach and other sunny outdoor events. See also *Green eyeshade *Sportswear *Sun hat A sun hat (also known as the floppy hat, harvest hat or field hat International Hat Company. International Harvest Hat Company: A Brief History, 1917-1942 25th Annive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accountants
An accountant is a practitioner of accounting or accountancy. Accountants who have demonstrated competency through their professional associations' certification exams are certified to use titles such as Chartered Accountant, Chartered Certified Accountant or Certified Public Accountant, or Registered Public Accountant. Such professionals are granted certain responsibilities by statute, such as the ability to certify an organization's financial statements, and may be held liable for professional misconduct. Non-qualified accountants may be employed by a qualified accountant, or may work independently without statutory privileges and obligations. Cahan & Sun (2015) used archival study to find out that accountants’ personal characteristics may exert a very significant impact during the audit process and further influence audit fees and audit quality. Practitioners have been portrayed in popular culture by the stereotype of the humorless, introspective bean-counter. It has been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riotsquad Helmet
A riot protection helmet is a type of helmet designed for law enforcement and military use to protect its wearer's head, face and eyes from handheld melee weapons, and thrown projectiles such as bricks, as may be met in riot control. Many modern riot squad helmets are reinforced with materials that will protect the wearer from dangerous substances such as acids or industrial chemicals. The riot protection helmets are usually made to be able to easily fit a Gas mask, especially when tear gas is being used. There have been rare cases of riot protection helmets being worn to protect against objects blown by tornadoes or fierce storms for example in England in the 18 January 2007 gale. Description The simplest form is a hard shell with reinforced padding, and a chinstrap and a hinge-up (usually polycarbonate) visor, as in this image. These riot protection helmet visors are usually curved sideways and straight up-and-down, not curved both ways like on the older type of motorcycle h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polycarbonate
Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily worked, molded, and thermoformed. Because of these properties, polycarbonates find many applications. Polycarbonates do not have a unique resin identification code (RIC) and are identified as "Other", 7 on the RIC list. Products made from polycarbonate can contain the precursor monomer bisphenol A (BPA). Structure Carbonate esters have planar OC(OC)2 cores, which confers rigidity. The unique O=C bond is short (1.173 Å in the depicted example), while the C-O bonds are more ether-like (the bond distances of 1.326 Å for the example depicted). Polycarbonates received their name because they are polymers containing carbonate groups (−O−(C=O)−O−). A balance of useful features, including temperature resistance, impact resistance and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
