Glossary of numismatics
This article is a collection of Numismatic and coin collecting terms with concise explanation for the beginner or professional.
Numismatics (ancient Greek: νομισματική) is the scientific study of money and its history in all its varied forms. While numismatists are often characterized as studying coins, the discipline also includes the study of banknotes, stock certificates, medals, medallions, and tokens (also referred to as Exonumia).
Sub-fields or related fields of numismatics are:
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Type 34
Type 34 may refer to:
QBZ-03
The QBZ-03 assault rifle, also known as the Type 03, is a Chinese gas operated, selective-fire weapon and is the latest assault rifle designed and developed for the 5.8×42mm DBP87 round.
Unlike the bullpup QBZ-95, the QBZ-03 is a weapon of conventional design and is loosely inspired by the Type 81 assault rifle. The weapon is designed to be easily used by soldiers already familiar with previously issued rifles and machine guns. The QBZ-03 has a two-piece receiver largely made up of forged aluminum alloy with the stock, pistol grip, and handguards being made of a polymer compound. The gas block has a two position regulator, one for firing standard ammunition, the other to allow the use of rifle grenades. The sights are of a hooded front sight with a flip up rear diopter sight similar to the American M16 rifle. A scope rail is available to allow the use of various optics. The QBZ-03 has seen some issue within the People's Armed Police, People's Liberation Army Marine Corps, People's Liberation Army Air Force Paratroopers, and second line PLA ground units. An export-aimed version of the QBZ-03 also exists, first introduced in 2005 by the joint CJAIE (China Jing-An Import-Export) and Jiang-She Group Companies. The export version is chambered in 5.56×45mm NATO and feeds by STANAG magazines. The cyclic rate on the issued model is semi-automatic or fully automatic only, while the export model has an integrated three round burst mode. The type's most notable public display was by the PLA Airforce Airborne Troops during the October 1st 2009 60th Anniversary Parade. The assault rifle was also featured in the 2015 Victory Day Parade.
Film (Iranian magazine)
Film (Persian:فیلم) is an Iranian film review magazine published for more than 30 years. The head-editor is Massoud Mehrabi.
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Lubrication theory
In fluid dynamics, lubrication theory describes the flow of fluids (liquids or gases) in a geometry in which one dimension is significantly smaller than the others. An example is the flow above air hockey tables, where the thickness of the air layer beneath the puck is much smaller than the dimensions of the puck itself.
Internal flows are those where the fluid is fully bounded. Internal flow lubrication theory has many industrial applications because of its role in the design of fluid bearings. Here a key goal of lubrication theory is to determine the pressure distribution in the fluid volume, and hence the forces on the bearing components. The working fluid in this case is often termed a lubricant.
Free film lubrication theory is concerned with the case in which one of the surfaces containing the fluid is a free surface. In that case the position of the free surface is itself unknown, and one goal of lubrication theory is then to determine this. Surface tension may then be significant, or even dominant. Issues of wetting and dewetting then arise. For very thin films (thickness less than one micrometre), additional intermolecular forces, such as Van der Waals forces or disjoining forces, may become significant.
List of film periodicals
Film periodicals combine discussion of individual films, genres and directors with in-depth considerations of the medium and the conditions of its production and reception. Their articles contrast with film reviewing in newspapers and magazines which principally serve as a consumer guide to movies.
Magazines and trade publications
Scholarly journals
References
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