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Fifty Lei
The fifty-lei banknote is one of the circulating denomination of the Romanian leu. It is the same size as the 50 Euro banknote. The main color of the banknote is yellow. It pictures, on the obverse, pilot and engineer Aurel Vlaicu Aurel Vlaicu (; 19 November 1882 – 13 September 1913) was a Romanian engineer, inventor, airplane constructor and early pilot.Gheorghiu, 1960 Early years and education Aurel Vlaicu was born in the village of Binținți in Transylvania, Aus ..., and on the reverse the ''A Vlaicu Nr. II airplane'' design, the head of an eagle, and the sketch of the Gnome motor of his airplane. History In earlier times, the denomination was also in the coin form, as follows: First leu (1867-1947) * banknote issue: 1877 (the hypothecary issue) * coin issues: 1906 (gold, celebration issue), 1937 (re-issue: 1938) Second leu (1947-1952) * no issues Third leu - ROL (1952-2005) * banknote issue: 1966 * coin issue: 1991 (re-issues: 1992, 1993, 1994, 1995, 1996) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romanian Leu
The Romanian leu (, plural lei ; ISO code: RON; numeric code: 946) is the currency of Romania. It is subdivided into 100 (, singular: ), a word that means "money" in Romanian. Etymology The name of the currency means "lion", and is derived from the Dutch thaler ( "lion thaler/dollar"). The Dutch ''leeuwendaalder'' was imitated in several German and Italian cities. These coins circulated in Romania, Moldova and Bulgaria and gave their name to their respective currencies: the ''Romanian leu'', the 'Moldovan leu'' and the ''Bulgarian lev''. History First leu: 1867–1947 In 1860, the Domnitor Alexandru Ioan Cuza attempted to create a national ''românul'' ("the Romanian") and the ''romanat''; however, the project was not approved by the Ottoman Empire. On 22 April 1867, a bimetallic currency was adopted, with the leu equal to 5 grams of 83.5% silver or 0.29032 grams of gold. The first leu coin was minted in Romania in 1870. Before 1878 the silver Imperial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watermark
A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations in the paper. Watermarks have been used on postage stamps, currency, and other government documents to discourage counterfeiting. There are two main ways of producing watermarks in paper; the ''dandy roll process'', and the more complex ''cylinder mould process''. Watermarks vary greatly in their visibility; while some are obvious on casual inspection, others require some study to pick out. Various aids have been developed, such as ''watermark fluid'' that wets the paper without damaging it. A watermark is very useful in the examination of paper because it can be used for dating documents and artworks, identifying sizes, mill trademarks and locations, and determining the quality of a sheet of paper. The word is also used for digital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Security Thread
A security thread is a security feature of many banknotes to protect against counterfeiting, consisting of a thin ribbon that is threaded through the note's paper. Usually, the ribbon runs vertically, and is "woven" into the paper, so that it at some places emerges on the front side and at the remaining places at the rear side of the paper. Usually, it is made of metal foil, but sometimes of plastic. Often, it has some text or numbers (e.g., the denomination) engraved. Threads are embedded within the paper fiber and can be completely invisible or have a star burst effect, where the thread appears to weave in and out of the paper when viewed from one side. However, when held up to the light, the thread will always appear as a solid line. Features can be built into the thread material e.g., microprinting on a transparent plastic thread or adding materials so they fluoresce under ultraviolet light. The thread is a difficult feature to counterfeit but some counterfeiters have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microprinting
Microprinting is the production of recognizable patterns or characters in a printed medium at a scale that requires magnification to read with the naked eye. To the unaided eye, the text may appear as a solid line. Attempts to reproduce by methods of photocopy, image scanning, or pantograph typically translate as a dotted or solid line, unless the reproduction method can identify and recreate patterns to such scale. Microprint is predominantly used as an anti-counterfeiting technique, due to its inability to be easily reproduced by widespread digital methods. While microphotography precedes microprint, microprint was significantly influenced by Albert Boni in 1934 when he was inspired by his friend, writer and editor Manuel Komroff, who was showing his experimentations related to the enlarging of photographs. It occurred to Boni that if he could reduce rather than enlarge photographs, this technology might enable publication companies and libraries to access much greater quant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blacklight
A blacklight, also called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave (UV-A) ultraviolet light and very little visible light. One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV, so the lamp has a dim violet glow when operating. Blacklight lamps which have this filter have a lighting industry designation that includes the letters "BLB". This stands for "blacklight blue". A second type of lamp produces ultraviolet but does not have the filter material, so it produces more visible light and has a blue color when operating. These tubes are made for use in "bug zapper" insect traps, and are identified by the industry designation "BL". This stands for "blacklight". Blacklight sources may be specially designed fluorescent lamps, mercury-vapor lamps, light-emitting diodes (LEDs), lasers, or incandescent lamps. In medicine, for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EURion Constellation
The EURion constellation (also known as Omron rings or doughnuts) is a pattern of symbols incorporated into a number of secure documents such as banknotes and ownership title certificates designs worldwide since about 1996. It is added to help imaging software detect the presence of such a document in a digital image. Such software can then block the user from reproducing banknotes to prevent counterfeiting using colour photocopiers. Description The name "EURion constellation" was coined by security researcher Markus Kuhn, who uncovered the pattern on the 10 Euro (€10) banknote in early 2002 while experimenting with a Xerox colour photocopier that refused to reproduce banknotes. Markus KuhnThe EURion constellation Security Group presentation, Computer Laboratory, University of Cambridge, 8 February 2002. The pattern has never been mentioned officially; Kuhn named it the EURion constellation as it resembled the astronomical Orion constellation, and EUR is the ISO 4217 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aurel Vlaicu
Aurel Vlaicu (; 19 November 1882 – 13 September 1913) was a Romanian engineer, inventor, airplane constructor and early pilot.Gheorghiu, 1960 Early years and education Aurel Vlaicu was born in the village of Binținți in Transylvania, Austria-Hungary. In 1925, by then part of Romania, it was renamed ''Aurel Vlaicu'', and is now part of Geoagiu town. He attended a Calvinist high school in Orăștie (renamed Aurel Vlaicu High School in his honor in 1919) and took his Baccalaureate in Sibiu in 1902. He was a high school colleague of Petru Groza, and in Sibiu became friends with Octavian Goga. Vlaicu furthered his studies at Technical University of Budapest and Technische Hochschule München in Germany, earning his engineer's diploma in 1907. Between 1907 and 1908 Vlaicu served in the Austro-Hungarian Navy, and on September 1, 1908, he took an engineer's position with the Opel car factory in Rüsselsheim. Aviation career Vlaicu left Opel in March 1909 and returned to B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edelweiss
EDELWEISS (Expérience pour DEtecter Les WIMPs En Site Souterrain) is a dark matter search experiment located at the Modane Underground Laboratory in France. The experiment uses cryogenic detectors, measuring both the phonon and ionization signals produced by particle interactions in germanium crystals. This technique allows nuclear recoils events to be distinguished from electron recoil events. The EURECA project is a proposed future dark matter experiment, which will involve researchers from EDELWEISS and the CRESST dark matter search. Dark matter Dark matter is material which does not emit or absorb light. Measurements of the rotation curves of spiral galaxies suggest it makes up the majority of the mass of galaxies; and precision measurements of the cosmic microwave background radiation suggest it accounts for a significant fraction of the density of the Universe. A possible explanation of dark matter comes from particle physics. WIMP (Weakly Interacting Massive Particl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller
A propeller (colloquially often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air. The blades are specially shaped so that their rotational motion through the fluid causes a pressure difference between the two surfaces of the blade by Bernoulli's principle which exerts force on the fluid. Most marine propellers are screw propellers with helical blades rotating on a propeller shaft (ship), propeller shaft with an approximately horizontal axis. History Early developments The principle employed in using a screw propeller is derived from sculling. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Bank Of Romania
The National Bank of Romania ( ro, Banca Națională a României, BNR) is the central bank of Romania and was established in April 1880. Its headquarters are located in the capital city of Bucharest. The National Bank of Romania is responsible for the issue of the Romanian leu and as such it sets the monetary policy, holds the currency reserves and manages the exchange rate. History The bank's first governor was Ion Câmpineanu. Eugeniu Carada is associated to the National Bank, as he was the founder of the bank and he was elected director of the bank, but he never accepted the role of Governor. In 1916, in the wake of the Central Powers' invasion, the valuables of the National Bank of Romania, together with many other valuables (the Romanian Treasure) were sent to Moscow for safekeeping, but were never returned (except for the Pietroasele treasure - now on display at the National Museum of Romanian History, the numismatic collection of the National Bank, some paintings and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vlaicu II Airplane
Vlaicu is a Romanian surname. Notable people with the surname include: *Aurel Vlaicu (1882–1913), Romanian engineer, inventor and aviator * Florin Vlaicu (born 1986), Romanian rugby union player *Sorin Vlaicu (born 1965), Romanian footballer as a given name, it may refer to: *Vlaicu Bârna Vlaicu Victor Virgil Bârna (December 4, 1913 – March 11, 1999) was an Austro-Hungarian-born Romanian poet. Born in Crișan, Hunedoara County, in the Transylvania region, his parents Ion Bârna and Maria (''née'' Pavel) were peasants. After ... (1913-1999), poet {{surname, Vlaicu Romanian-language surnames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euro Banknotes
Banknotes of the euro, the common currency of the Eurozone (euro area members), have been in circulation since the first series (also called ''ES1'') was issued in 2002. They are issued by the national central banks of the Eurosystem or the European Central Bank. The euro was established in 1999, but "for the first three years it was an invisible currency, used for accounting purposes only, e.g. in electronic payments". In 2002, notes and coins began to circulate. The euro rapidly took over from the former national currencies and slowly expanded around the European Union. Denominations of the notes range from €5 to €500 and, unlike euro coins, the design is identical across the whole of the Eurozone, although they are issued and printed in various member states. The euro banknotes are pure cotton fibre, which improves their durability as well as giving the banknotes a distinctive feel. They measure from to and have a variety of color schemes. The euro notes contain many c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
