Side cap

A side cap is a foldable military cap with straight sides and a creased or hollow crown sloping to the back where it is parted. It is known as a garrison cap or flight cap (in the United States), a wedge cap (in Canada), or officially field service cap (in the United Kingdom and Commonwealth countries), but it is more generally known as the side cap. It follows the style which originated with the so-called Austrian Cap in the 1890s. There was also a previous version known as the 'Torin', which had a much more curved top line when viewed from the side. Both Austrian and Torin types were distinguished by the inclusion of a fold-down section for warming the ears and back of the head in inclement weather. These two styles are still used by officers of some British units and continue to include this feature. In appearance the cap is similar to the Glengarry, but differs by a lack of the tartan, or check trim, toorie, and ribbons typical of the Scottish cap. It has been associated with various military forces from the time of World War I to the present day, and various youth organizations. A convenient feature of this cap is that when the owner is indoors and no coat-hook is available, it can be easily stored (by folding it over the belt or, unofficially, by tucking it under a shoulder strap).

Submarine sandwich

A submarine sandwich, also known as a sub, wedge, hoagie, hero, grinder, or one of the many regional naming variations, is a type of sandwich that consists of a long roll of bread split widthwise into two pieces, and filled with a variety of meats, cheeses, vegetables, seasonings, and sauces. The sandwich has no standardized name, and many U.S. regions have their own names for it; one study found 13 different names for the sandwich in the United States. The usage of the several terms varies regionally but not in any pattern, as they have been used variously by the people and enterprises who make and sell them. The terms submarine and sub are widespread and not assignable to any certain region, though many of the localized terms are clustered in the northeastern United States.

History and etymology

The sandwich originated in several different Italian American communities in the Northeastern United States from the late 19th to mid-20th centuries. Portland, Maine claims to be the birthplace of the "Italian sandwich" and it is considered Maine's signature sandwich. The popularity of this Italian-American cuisine has grown from its origins in Connecticut, Pennsylvania, Delaware, New York, New Jersey, and Massachusetts to most parts of the United States, Canada, and with the advent of chain restaurants, is now available in many parts of the world.

Wedge prism

The wedge prism is a prism with a shallow angle between its input and output surfaces. This angle is usually 3 degrees or less. Refraction at the surfaces causes the prism to deflect light by a fixed angle. When viewing a scene through such a prism, objects will appear to be offset by an amount that varies with their distance from the prism.

Deflection angle

For a wedge prism in air, rays of light passing through the prism are deflected by the angle δ, which is approximately given by

where n is the index of refraction of the prism material, and α is the angle between the prism's surfaces.

Applications

The term "optical wedge" refers to any shallow angle between two plane surfaces of a window. This wedge may range from a few millionths of a degree of perfect parallelism to as much as three degrees of angle. Even though high-precision optics, such as optical flats, may be lapped and polished to extremely high levels of parallelism, nearly all optics with parallel faces have some slight wedge. This margin of error is usually listed in minutes or seconds of arc. Windows manufactured with an intentional wedge are often referred to as wedge prisms, and typically come with wedge angles of one, two, or three degrees. Many applications exist for wedge prisms, including laser-beam steering, rangefinding and variable focusing.

Accretionary wedge

An accretionary wedge or accretionary prism is formed from sediments that are accreted onto the non-subducting tectonic plate at a convergent plate boundary. Most of the material in the accretionary wedge consists of marine sediments scraped off from the downgoing slab of oceanic crust but in some cases includes the erosional products of volcanic island arcs formed on the overriding plate.

Materials within an accretionary wedge

Accretionary wedges and accreted terranes are not equivalent to tectonic plates, but rather are associated with tectonic plates and accrete as a result of tectonic collision. Materials incorporated in accretionary wedges include:

Hat

A hat is a head covering which is worn for various reasons, including protection against the elements, ceremonial reasons, religious reasons, safety, or as a fashion accessory. In the past, hats were an indicator of social status. In the military, hats may denote nationality, branch of service, rank and/or regiment.Police typically wear distinctive hats such as peaked caps or brimmed hats, such as those worn by the Royal Canadian Mounted Police. Some hats have a protective function. As examples, the hard hat protects construction workers' heads from injury by falling objects and a British police Custodian helmet protects the officer's head, a sun hat shades the face and shoulders from the sun, a cowboy hat protects against sun and rain and a Ushanka fur hat with fold-down ear-flaps keeps the head and ears warm. Some hats are worn for ceremonial purposes, such as the mortarboard, which is worn (or carried) during university graduation ceremonies. Some hats are worn by members of a certain profession, such as the Toque worn by chefs. Some hats have a religious functions, such as the Mitres worn by Bishops and the turban worn by Sikhs.

Hať

Hať, formerly Haš (German: Haatsch) is a village in the Moravian-Silesian Region of the Czech Republic. It is part of micro-region Hlučínsko. It has around 2,500 inhabitants.

Notable residents

External links

Hat (disambiguation)

A hat is an item of clothing worn on the head.

Hat may also refer to:

HAT or hat is used as an acronym for: