Razor

A razor is a bladed tool primarily used in the removal of unwanted body hair through the act of shaving. Kinds of razors include straight razors, disposable razor, and electric razors.

While the razor has been in existence since before the Bronze Age (the oldest razor like-object has been dated to 18,000 B.C.), its modern counterpart was invented in the 18th century, and the 1930s saw the invention of electric razors. In the 21st century, the safety razor – electric or not – is most commonly used by both men and women, but other kinds still exist.

History

Razors have been identified from many Bronze Age cultures. These were made of bronze or obsidian and were generally oval in shape, with a small tang protruding from one of the short ends.

Various forms of razors were used throughout history, which are different in appearance but similar in use to modern straight razors. In prehistoric times clam shells, shark teeth, and flint were sharpened and used to shave with. Drawings of such blades were found in prehistoric caves. Some tribes still use blades made of flint to this day. Excavations in Egypt have unearthed solid gold and copper razors in tombs dating back to the 4th millennium BC. The Roman historian Livy reported that the razor was introduced in ancient Rome in the 6th century BC. by legendary king Lucius Tarquinius Priscus. Priscus was ahead of his time because razors did not come to general use until a century later.

Razor (short story)

"Razor" is a short story by the Russian writer Vladimir Nabokov. It was first published (as Britva) in the expatriate Russian literary magazine Rul' in 1926, but a French translation did not appear until 1991, and an English one (by Dmitri Nabokov, the writer's son) not until 1995.

Plot summary

Ivanov, an exiled Russian and former military officer living in Berlin, has taken up employment as a barber; an apt position, Nabokov notes, as Ivanov's sharp facial appearance had earned him the nickname "Razor" in his earlier life. On a hot day, an unnamed character dressed largely in black enters the barber's, deserted save for Ivanov, and requests a shave. Ivanov quickly realises that the customer is a fellow Russian who, the reader gathers, tortured Ivanov during Russia's period of revolutionary upheaval. With the unnamed character sitting in the chair, his face lathered with shaving cream, Ivanov reminds him of their last encounter. Ivanov then proceeds begins to shave him, recounting their previous meeting while also strongly hinting at the effect that one slip of the razor could have. The reader half expects Ivanov to exact his revenge. But having told his story, Ivanov relents and the terrified and clean-shaven Soviet flees from the barber's.

Safety razor

A safety razor is a shaving implement with a protective device positioned between the edge of the blade and the skin. The initial purpose of these protective devices was to reduce the level of skill needed for injury-free shaving, thereby reducing the reliance on professional barbers for that service and raising grooming standards.

The term was first used in a patent issued in 1880, for a razor in the basic contemporary configuration with a handle attached at right angles to a head in which a removable blade is placed (although this form predated the patent).

Plastic disposable razors, and razors with replaceable blade attachments, are in common use today. Razors commonly include one to five cutting edges (but sometimes up to seven).

History

Early designs

The basic form of a razor, "the cutting blade of which is at right angles with the handle, and resembles somewhat the form of a common hoe", was first described in a patent application in 1847 by William S. Henson. This also covered a "comb tooth guard or protector" which could be attached both to the hoe form and to a conventional straight razor.

ULTra (rapid transit)

ULTra (Urban Light Transit) is a personal rapid transit system developed by the British engineering company ULTra Global PRT (formerly Advanced Transport Systems).

The first public system opened at London's Heathrow Airport in May 2011. It consists of 21 vehicles operating on a 3.9-kilometre (2.4 mi) route connecting Terminal 5 to its business passenger car park, just north of the airport. ULTra is in contention to develop an urban system in Amritsar, India projected to carry up to 100,000 passengers per day using 200 vehicles.

To reduce fabrication costs, ULTra uses largely off-the-shelf technologies, such as rubber tyres running on an open guideway. This approach has resulted in a system that ULTra believes to be economical; the company reports that the total cost (vehicles, infrastructure and control systems) is between £3 million and £5 million per kilometre of guideway.

Inception

The system was originally designed by Martin Lowson and his design team, Lowson having put £10 million into the project. He formed Advanced Transport Systems (ATS) in Cardiff to develop the system, and their site was later the location of its test track. ULTra has twice been awarded funding from the UK National Endowment for Science, Technology and the Arts (NESTA). Much of the original research on ULTra was done by the Aerospace Engineering department at the University of Bristol during the 1990s. Recently the company renamed itself "ULTra PRT Limited" to better reflect its primary business, and moved its corporate headquarters to Bristol.

Pod (Afro Celt Sound System album)

Pod, released May 4, 2004 by Real World Records, is essentially a remix album by Afro Celt Sound System of their first three albums, Volume 1: Sound Magic, Volume 2: Release, and Volume 3: Further in Time, done by members of the band and new artists as well, including some songs previously unavailable. It is also accompanied by a DVD of some music videos and some clips of their live tour.

Track listing

Gun pod

A gun pod is a detachable pod or pack containing machine guns or automatic cannon and ancillaries, mounted externally on a vehicle such as a military aircraft which may or may not also have its own guns.

Description

A gun pod typically contains one or more guns, a supply of ammunition, and, if necessary, a power source. Electrically powered cannon, such as the M61 Vulcan, may be powered from the aircraft's electrical system or by a ram-air turbine.

Gun pods increase a vehicle's firepower without occupying internal volume. When not required for a specific mission they can be omitted to save weight. On some vehicles they isolate delicate internal components such as radar from the weapon's recoil and gases, and for jet aircraft allow the weapons to be mounted away from the intakes of the engines, reducing problems of gun-gas ingestion, which may cause the engine to stall.

When designed to be suspension-mounted on a hardpoint on a typical post-WW II aircraft, gun pods are inherently less accurate than integral guns, or the type of "conformal" gun pods that are faired smoothly into or onto the nearby surfaces of an aircraft, because the "hardpoint" mounting is necessarily less rigid, so that the weapon's recoil produces more deflection. This problem is particularly acute with powerful cannon like the 30mm GPU-5 gun pod. Both hardpoint-mounted and conformal-mount gun pods also cause substantial drag on fast-moving vehicles such as fighter aircraft.