their lives. The Navajo rugs are in demand by the many tourists and collectors who visit the reservation each year. Two predominant colors in the Navajo weaving designs are indigo blue and red. Other colors often used are greys, shades of browns, yellows and golds. Navajo rugs are one of the most popular crafts, not only for a floor rug but to hang as a wall tapestry. Silversmithing Silversmithing is an important art form among Navajo. Silversmithing dates back to the 1800s when Navajo artists began melting silver coins to make jewelry. By the 1890s, Navajo silversmiths had begun setting turquoise into their jewelry. Navajo smiths began adding large chunks of stones, usually turquoise, to the silver in unique designs. Over time, they developed tools and techniques to stamp or engrave the metal. Today, Navajo jewelry is well known and highly valued by both Native and non-Native Americans. It remains a distinctive feature of Navajo history and culture.
· Keemine on vedeliku aurumine kogu vedeliku ulatuses. Sõltub: · rõhust vedeliku pinnal, · kõrgusest üle merepinna, · vedeliku puhtusest. Kondenseerumine on protsess, mille käigus gaasiline aine muutub vedelaks. Sublimeerumine on protsess, mille käigus tahke aine muutub gaasiliseks ilma vahepealse vedela olekuta. Andmed =m/V=>m=V N=1kW=1000W m=1000kg/m³*0,0013 m³=1,3kg t=0,5h=1800s N=A/t=Q/t=>Q=Nt V=1,3l=0,0013m³ Q=1000W*1800s=1800000J H2O Q=Lm t=100°C Q=2300000J/kg*1,3kg=2990000J Q=? Qv>Qp V:Pott ei keenud veest tühjaks, kuna ei saa vajaliku soojushulka. Andmed jää soojen. jää sulam. vee soojem. vee keemine m=200g=0,2kg -20°C(jää)------->0°C-------->100°C
while the American Falls are 1,060 feet (323 m) wide More than six million cubic feet (168,000 m³) of water falls over the crest line every minute in high flow, and almost 4 million cubic feet (110,000 m³) on average Sport Canada is a nation with two official sports: Lacrosse and ice hockey. Ice hockey began in Canada in the late 1800s There are also other sports like football, ice skateing etc. NHL Professional ice hockey league composed of 30 teams in North America The league was formed in 1917 in Montreal, Quebec Commissioner-Gary Bettman The most prestigious team award is the Stanley Cup, which is awarded to the league champion at the end of the Stanley Cup playoffs
Third level Fourth level Fifth level Conclusion Prefer beverages based on natural juices Avoid carbonised drinks Before each use of food drink a glass of water Interesting facts November 19th is National Carbonated Beverage with Caffeine Day President Vargas banned Cola from Brazil Soda fountains were popular in many drugstores in the 1800s and usually offered carbonated beverage flavors such as orange and grape. Sources http://www.ehow.com/info_8240651_composition-carbonated-drinks.html http://www.cdkitchen.com/recipes/articles/view/342/1/National-Carbonated-Beverage-with-Caffeine-Day.html http://formulation.vinensia.com/2011/03/carbonated-drinks-formula-composition.html http://bezdietu.ru/gazirjvannue-napitki.php http://www.medkrug.ru/article/show/97 http://shkolazhizni.ru/archive/0/n-1137/
Early History Ø Trees have been esthetically important to people since the earliest civilization. Ø Botanical gardens began to evolve during the Middle Ages. Ø The first recording of term ,,arborist". Ø Freely planted trees in London. North American History The popular image of a New England town square with trees and grass did not evolve until the late 1700s and early 1800s. First forest areas in eastern North America. Settlers and immigrants often brought seeds of their favorite tree species from thei homeland. Distribution of the urban forest The urban forest includes all woody vegetation within the environs of all populated places, from the tiniest villages to the largest cities. Parks Parks are probably the most relatable as forests. Public buildings and grounds Grounds adjacent to public buildings (Schools and colleges, hospitals, museums).
large, built in a Greek cross style. Traditionally, the church was named after the king that built it. In 1710, right before the invasion of the Russian troops and during the Great Northern War, the church was burnt down along with many buildings surrounding the city fortification wall. The destruction led to decreasing of the congregation - some of the members left to join other neighbouring congregations. Discussions about re-establishing the place began around the middle of the 1800s. By the end of 1850s, money was being raised collectivley in order to build a larger and more durable church for the use of Estonians. The construction lasted from October 1862 to December 1870, the two towers on the west side were enlarged in 1882. The architect of the project was Otto Pius Hippius from St.Petersburg. Along with the reconstruction of Tallinn’s largest place of worship, the Charles congregation was re-established as well.
country enjoys a diverse, multicultural society, high floral and faunal biodiversity, prize-winning rum, and Demerara sugar. Guyana is a major breeding area for sea turtles and other wildlife. The local climate is tropical and generally hot and humid. The major religions in Guyana are Christianity, Hinduism, Islam and other minor different faiths. Most Guyanese Christians are Protestants and include a mix of all races. Hinduism is dominated by the Indians who came to the country in the early 1800s, while Islam varies between Afro-Guyanese and Indian-Guyanese. When the first Europeans arrived in the area around 1500, Guyana was inhabited by the Arawak and Carib tribes of American Indians. Although Guyana was first sighted by Christopher Columbus during his third voyage in 1498. In 1831 the three separate colonies became a single British colony known as British Guiana. Escaped slaves formed their own settlements known as
Vastus. Võnkumise periood on 1,8 s. Ül. 6 Antud S = 16 cm2 = 16*10-4 m2 h=5m q = 1000 kg/m3 Leida F=? F = p*S Lahendus p = F/S p = qgh p = 1000kg/m3 * 9,8 m/s2 * 5m = 49 000Pa F = p*S F = 49 000 * 16*10-4 = 78,4 N Vastus. Jõud, ava sulgevale korgile mõjuv jõud on 78,4 N. Ül. 7 Antud d = 2 cm = 0,02 m r = 0.01 m t = 30 min = 1800 s m = 0,51 kg q = 7,5 kg/m3 Leida v=? Lahedus q = m/V V = m/q V = 0,51 / 7,5 = 0,068 m3 v = V / t*d v = V / t * pii * r2 v = 0,068 / 1800s * pii * 0,012 V=S*v*t v = V / (t * S) v = 0,068 / (1800*pii*0,012) = 0,12 m/s Vastus. Voolu kiirus on 0,12 m/s Ül. 8 Antud V = 100 l = 0,1 m3 t = 0 0C = 273,15 K p = 30 atm q= 0,00142 kg/m3 Gaasi ideaaltingimused p2= 1 atm = 105 Pa T2 = 0oC = 273, 15 K Leida m=? Lahendus: p1V1/T1 = p2V2/T2 T1 = T2 V2 = p1V1/p2 P2 = 1 atm V2 = 30 atm * 0,1 / 1 atm = 3 m3 q= m/V m=q*V m = 0,00142 kg/m3 * 3 m3 = 0,00426 kg Vastus. Hapniku mass on 0,00426 kg. Ül.9 Antud V1 = 6l = 0,006 m3
moderate risk due to its proximity to Southern California. On the other hand, Northern Arizona is at moderate risk due to numerous faults in the area. The regions that are at lowest risk in the state are near and west of Phoenix. The earliest Arizona earthquakes were recorded at Fort Yuma, on the California side of the Colorado River. They were centered near the Imperial Valley, or Mexico, back in the 1800s. In 1887, Douglas felt the shock of a magnitude 7.2 earthquake with an epicenter 40 miles to the south in the Mexican state of Sonora. The first damaging earthquake known to be centered within Arizona's borders occurred on January 25, 1906, also including a series of other earthquakes centered near Socorro, New Mexico. The shock was violent in Flagstaff. Tourist Attractions in Arizona Grand Canyon Glen Canyon National Recreation Area Monument Valley Hoover Dam Havasu Falls
down the price over the centuries. Surströmming — foul-smelling fish Every culture has at least one culinary specialty that makes both locals and visitors cringe. From late August to early September, a stinky tradition is upheld in Sweden, particularly in the northern part of the country. This is when cans of fermented sour Baltic herring (surströmming) are opened — a tradition dating to the 1800s. The custom always takes place outdoors owing to the overpowering, unpleasant smell, which many compare to rotten eggs and raw sewage. Crisp bread — hard to beat In addition to bread and butter, you’ll often find a type of crisp bread called knäckebröd served alongside your main meal. This is what the Swedes tend to reach for. Once considered poor man’s food, crisp bread has been baked in Sweden for over 500 years,
remainder in the north-east. The first settlements in Ireland date from 8000 BC. By 200 BC Celtic migration and influence had come to dominate the island. Relatively small scale settlement by both the Vikings and Normans in the Middle Ages gave way to complete English domination by the 1600s. Protestant English rule resulted in the marginalisation of the Catholic majority, although in the north-east, Protestants were in the majority. A famine in the mid-1800s caused deaths and emigration. Following a war of independence, Ireland was split into: the independent Irish Free State and Northern Ireland, which remains a part of the United Kingdom. The Free State left the Commonwealth to become a Republic in 1949. In 1973 both parts of Ireland joined the European Economic Community. The Troubles in Northern Ireland led to much unrest from the late 1960s until the 1990s, which subsided following a peace deal in 1998.
to the ground as acid rain or other forms of precipitation. The gases responsible for acid deposition are normally a byproduct of electric power generation and the burning of coal. As such, it began entering the atmosphere in large amounts during the Industrial Revolution and was first discovered by a Scottish chemist, Robert Angus Smith, in 1852. In that year, he discovered the relationship between acid rain and atmospheric pollution in Manchester, England. Although it was discovered in the 1800s, acid deposition did not gain significant public attention until the 1960s and the term acid rain was coined in 1972. Public attention further increased in the 1970s when the New York Times published reports about problems occurring in the Hubbard Brook Experimental Forest in New Hampshire. Effects of Acid Rain Today there are several important impacts of acid deposition on both natural and man-made environments. Aquatic settings are the most clearly impacted by acid deposition though
consisting of a symmetrical building with an iwan, an arch-shaped doorway, topped by a large dome. The base structure is a large, multi-chambered structure. The base is essentially a cube with chamfered edges and is roughly 55 meters on each side (see floor plan, right). On the long sides, a massive pishtaq, or vaulted archway, frames the iwan with a similar arch-shaped balcony. The main dome is crowned by a gilded spire or finial. The finial, made of gold until the early 1800s, is now made of bronze. The finial provides a clear example of integration of traditional Persian and Hindu decorative elements. The finial is topped by a moon, a typical Islamic motif, whose horns point heavenward. Because of its placement on the main spire, the horns of moon and finial point combine to create a trident shape, reminiscent of traditional Hindu symbols of Shiva. Construction The Taj Mahal was built on a parcel of land to the south of the walled city of Agra. An area of
borrowed from Latin, Greek, English etc.; since 1995 the 14th of March is celebrated as the Mother Tongue Day, in 2000 UNESCO declared 21 February World Mother Tongue Day; the first estonian calendar was published in 1731, radio broadcasts started in 1924, book was published in 1535 Population: In the 13th cen. The population numbered between 100000 and 200000, but this figure changed as a result of wars, epidemics, migration and famine during the centuries followed; in the mid-1800s many estonians emigrated to Russia, North-America etc. to find a farmland better living conditions, estonians made 88.2% of the total population of their native land; WW II caused war casualties, deportations and mass emigration of refugees, in 1945 there were 854000 people in Estonia; Estonians, Russians, Ukrainians, Belorussians, Finns and others were the communities; citizenship was given to the poplke who had held it before 16 June 1940 and tgeir descendants
In the west of the U.S.A. there is another big lake called the Great Salt Lake. Hawaii, a chain of islands in the Pacific Ocean, has a tropical climate. Alaska is separated from the continental US by Canada. The history of the USA began when England started creating colonies in the North America in the 1600s. The colonies became independent States and joined to form the "United States" in the 1700s. The USA expanded westward in the 1800s and reached the Pacific Ocean. As it grew, it became the greatest industrial power in the world. It wanted to stay out of European problems, but in the two World Wars, it decided that it could not afford to let Germany win. In the 1940s it became the leader of the West and organized an alliance of the democracies. Today it is the only superpower left in the world. Tensions between American colonials and the British during the revolutionary period of the 1760s and early 1770s led to the
Christmas Annual in 1887. Holmes is famous for his intellectual prowess, and is renowned for his skillful use of "deductive reasoning" while using abductive reasoning (inference to the best explanation) and astute observation to solve difficult cases. John Watson is a fictional character, the friend, confidant and biographer of Sherlock Holmes. In the stories, Watson shared lodgings with Holmes in large parts of the last two decades of the 1800s and soon emerged as the assistant and biographer of the great detective. The Adventures of Sherlock Holmes is a collection of twelve stories by Sir Arthur Conan Doyle, featuring his famous detective and illustrated by Sidney Paget. The 12 stories in this collection are: "A Scandal in Bohemia" "The Red-Headed League" "A Case of Identity" "The Boscombe Valley Mystery" "The Five Orange Pips" "The Man with the Twisted Lip"
Birth of medical domain: 1773 obstetric forceps were invented which gave man midwife a distinct advantage.There was however an urgent need to deconstruct the view that saw birth as `normal' and `natural' physiological event coupled with resistance based on sexual prudery that denied men vital access to the `birthing subject' Creation of Lying in hospitals In England between 1739 and 1765 two lying in wards and four lying in hospitals were created. Provincial hospitals followed in 1800s Hospitals were financed by private capital and, mostly charitable and received patients from the working classes. In the Americas the women of colour and immigrants were. For the first time uninhibited access to female body becomes possible. HOWEVER, o Medical assistance could not improve midwife assisted mortality record. o Toxaemias of pregnancy, sepsis and haemorrhage were noT brought under control till 1930s.
Savannas are also characterised by seasonal water availability, with the majority of rainfall being confined to one season of the year. Savannas can be associated with several types of biomes. Savannas are frequently seen as a transitional zone, occurring between forest and desert or prairie. Although the term savanna is believed to have originally come from a Native American word describing "land which is without trees but with much grass either tall or short", by the late 1800s it was used to mean "land with both grass and trees". It now refers to land with grass and either scattered trees or an open canopy of trees. Changes in fire management Savannas are subject to regular fires and the ecosystem appears to be the result of human use of fire. For example Native Americans created
decided to break away from England, form an alliance with France, and form a Union of the colonies. Thomas Jefferson wrote a Declaration of Independence. It was adopted on July 4. This meant war. Britain lost the war and lost America. It recognized the United States as a separate country in 1783. When Independence was declared in 1776, the 13 colonies became 13 States. In each State, the elected Assembly became the basis for a democratic government. Throughout the 1800s, new States kept joining the Union. And America kept gaining new territories. Soon it stretched all the way to the Pacific Ocean. While America expanded to the west, the Northern and Southern States argued over whether slavery should be allowed in the new western States. In 1860, Abraham Lincon was elected President. He was against slavery and promised to stop it from spreading any further. 11 Southern States decided to break away from the Union. The Federal Government did not
R O 100m Rt- 100m(1+4,3*10-3 * 102 kraadi ) + 100m t-100 kraadi cn -4,3*10-3 1/c Rt? Küsimused ja ülesanded 1.Millest sõltub elektrivoolu tugevus ? Vastus: Voolutugevus sõltub elektrijuhi vaadeldavat ristlõiget ajaühikus läbinud laengu suurusest e. Vabade laengukandjate ( näit elektronide ) hulgast. 2.Milline on voolutugevus laevalgusti juhtmes ( ja ka valgusti lambis ) , kui poole tunni jooksul läbib seda laeng 540 C ? Andmed T= 0,5h=1800 s 540C/1800s=0,3A Q=540 C I=? V= 0,3A 3.Kui suur laeng läbis välgukanali ristlõiget 0,9ms jooksul kui voolutugevus selles oli 6*10 5 A? Andmed T=0,9ms=0,9*10-3s Q=6.10 5 A*0,9*10 -3 s = 5,4*10 2 C=540 C I=6*105 A Q=? V: Q=540 C 4.Auto käivitamisel on kävitis voolutugevus 150 A. Kui kaua töötas käiviti , kui aku ja käiviti vahelise get läbis laeng 600 C ? 5.Elektripliidi küttekehas on voolu Andmed I=5A Lahendus Q=N*L-N= 1/E
paid by people when they buy any goods. It is not noticiable because prices already include it. Excise Duties: imposed on alcohol, tobacco, petrol etc. to limit the use of these goods. POPULATION The earliest traces of human habitation date from prehistoric times. In th the 13 century the population numbered between 100 000 and 200 000, but this figure changed as a result of wars, epidemics and migrations. In the mid 1800s many Estonians emigrated in the hope of finding good farmland and better living conditions. The census of 2000 showed that 47 different nationalities live in Estonia: 67,9% Estonians, 25,6% are Russian and also Ukrainians, Belarussians, Finns and Tatars. Estonian citizenship does not depend on ethnicity. It was automatically given to the people who had held it before 1940. at the beginning of 2003, the estimated population was 1 356 045, of which 54% were women.
......................................................10 2 Frederick Douglas Frederick Douglass (February 17, 1818 February 20, 1895) was an American abolitionist, editor, orator, author, statesman and reformer. Called "The Sage of Anacostia" and "The Lion of Anacostia," Douglass was one of the most prominent figures of African American history during the 1800s, and one of the most influential lecturers and authors in American history. Douglass was a firm believer in the equality of all people, whether black, female, American Indian, or recent immigrant. He spent his entire life advocating the brotherhood of all humankind. One of his favorite quotations was: "I would unite with anybody to do right and with nobody to do wrong." Life as a slave Frederick Augustus Washington Bailey, who later became known as Frederick Douglass,
Creoles from these two nations emigrated to other African countries, such as Equatorial Guinea, where they were known as Krios; or Nigeria, where they were known as Saros. Some scholars report that a new wave of Krio immigrant descendants of freed slaves of Sierra Leone and Liberia are known as Fernandinos (see Fernando Po).An additional sub-group of African descent from the Americans in Equatorial Guinea were descendants of native Bubi and freed Cuban slaves brought to the islands during the 1800s. People of this specific ancestry were part of the emancipado population which included other distinct groups assimilated into the local colonial society. Brazil In Brazil, the word crioulo came to mean "dark skinned person", that is, a person of mostly African ancestry. In the Colony it was common to refer to a slave born in Brazil as a crioulo and to a slave from Africa as an "African". Thus crioulo came to refer to slaves born and raised in Brazil
was the survivor of a slang fad in Boston and New York where abbreviations of common phrases were deliberately misspelled (O.K. – “oll correct”). Second explanation is from the French expression “au quai” (“to the quay”) which was used when merchandise was finally ready to ship and could be interpreted as “everything is fine”. Tex-Mex – The term was first used in the English language as a nickname for the Texas Mexican Railway, built in 1875 in southern Texas. In the 1800s, the names of railroads were oftentimes abbreviated in newspapers and Texas Mexican Railway was abbreviated as Tex. Mex. In 1914, the term was also used for “Texan of Mexican background”, replacing the earlier term Texican (1863). Later, during the Spanish missions in Texas, the Spanish and Mexican cuisines blended in Texas and, over time, became known as Tex-Mex. Today, the term refers not only to the cuisine but sometimes also to the music of Mexican-American people.
to the Corpus Juris Civilis, and common law with medieval sources. The terms of the Treaty of Union with England in 1707 guaranteed the continued existence of a separate legal system in Scotland from that of England and Wales. Prior to 1611, there were several regional law systems in Scotland, most notably Udal law in Orkney and Shetland, based on old Norse law. Various other systems derived from common Celtic or Brehon laws survived in the Highlands until the 1800s. Scots law provides for three types of courts responsible for the administration of justice: civil, criminal and heraldic. The supreme civil court is the Court of Session, although civil appeals can be taken to the House of Lords. The High Court of Justiciary is the supreme criminal court. Both courts are housed at Parliament House, in Edinburgh, which was the home of the pre-Union Parliament of Scotland. The sheriff court is the main criminal and civil court
· The role of Thomas Jefferson rd 3 president Author of Declaration of Independence Supported French during France-Britain war V North versus South · Different developments in the North and South All over the country School system Women rights South Agriculture: tobacco, rice, cotton (export to England) Cotton gin (1793) Slave labor (economics of south are based on slaves work) · Abolitionist movement Antislavery movement in 1800s Send free slaves to Liberia Help slaves flee their masters · Missouri compromise 5 Forbid slavery above 36°30' latitude Except Missouri · Fugitive Slave Act Fugitive- slave who has fled his master Free citizens should assist the return of fugitive slaves to their masters Result: Mexican American war · Underground Railroad Network of people who helped slaves escape south Hundreds of slaves each year used railroad terminology · Dred Scott case
rooms were warmed by wood-burning or coal-burning stoves. Beginning with Benjamin Franklin's experiment with a kite one stormy night in Philadelphia, the principles of electricity gradually became understood. Thomas Edison helped change everyone's life -- he perfected his invention -- the electric light bulb. Prior to 1879, direct current (DC) electricity had been used in arc lights for outdoor lighting. In the late-1800s, Nikola Tesla pioneered the generation, transmission, and use of alternating current (AC) electricity, which can be transmitted over much greater distances than direct current. Tesla's inventions used electricity to bring indoor lighting to our homes and to power industrial machines. Despite its great importance in our daily lives, most of us rarely stop to think what life would be like without electricity. Yet like air and water, we tend to take electricity for granted
sunflower and other minor oilseeds. History Sunflower is believed to have been domesticated from wild sunflower around 1000 B.C. in the western U.S. As can be seen along most Missouri roadsides in mid to late summer, wild sunflower is highly branched with small heads and small seeds, in contrast to the large seed head of domesticated sunflower. Spaniards brought the sunflower to Europe in 1510, but it was never really viewed as a food plant by Europeans until it reached Russia in the late 1800s. The process of improving sunflower into a modern crop began in Russia around 1860. By the late 1940s, Americans were able to bring back sunflower varieties with oil contents of nearly 50 percent. American varieties at the time had 20 to 30 percent seed oil content. U.S. production has emphasized oilseed varieties, but sunflower as a snack food has gradually increased. Sunflower acreage peaked in the late 1970s, then fell due to lowered prices and pest problems
early Siamese imports and the extreme modern Siamese. There is a continuum between the old-style and the modern Siamese, with most people considering there to be two types: old and modern. Personally speaking, I find many of the modern showbench Siamese extremely ugly creatures and many owners, as opposed to breeders, prefer a less extreme style of cat. For this reason, there are also traditional (old) style Siamese (Thai Siamese) being bred, recreating the chunkier shape familiar in the late 1800s and early 1900s. Both originate from the same cats. The naturally-occurring colourpoints I have seen in Malaysia and Thailand are closer in type to those being bred to the older (non-ultra-typed) Siamese standard. Of the conformation of Siamese cat, Phyllis Lauder wrote in "The British, European and American Shorthair Cat" (1981): "Cats of eastern provenance have not shown long heads: in the 1930s and 40s there
the partial mechanization of the sowing and reaping processes. (A) created (B) enriched (C) accelerated (D) typified 23. One of the most striking aspects of Indian cultures was the production of ceremonial costumes and ornaments worn during religious rituals. (A) absurd (B) remarkable (C) arbitrary (D) spontaneous 24. The innovative use of iron and steel in construction represented an important advancement in the building industry of the 1800s. (A) improvement (B) element (C) influence (D) occasion 25. Professional interior design assignment are typically complex endeavors that begin with an interview with the client. (A) personal (B) intricate (C) orderly (D) gratifying 26. In antiquity, mosaics were made of uncut pebbles of uniform size. (A) consistent (B) ideal (C) moderate (D) minuscule 27. All organisms must obtain nutrients from the environment in order to sustain themselves.
Karjäärivõimalused, töökoha stabiilsus · Perekonnaelu sissetulek ja vabaaeg, milline on iga täiskasvanud perekonnaliikme roll · Vabaaja tegevused kui palju aega ja jõudu töö võtab, kui palju tehakse ületunde, kas töö on öösel või päeval, vahetustega. Kui palju jääb sissetulekutest alles vaba aja veetmiseks. 15.1.9. Kuidas on muutunud vabaaja veetmine alates 1800st aastast kaasajani? Mis on seda mõjutanud? 1800s, 1900s Töö organiseerimine ja tööle pühendumine Industriaal- ja postindustriaalühiskondade majandust iseloomustab tugev spetsialiseerumine ehk tööjaotus. Traditsioonilistes ühiskondades 20-30 erinevat ametinimetustes, tänapäeval nt Inglismaal juba üle 20 000 erineva ametinimetuse. Masstootmine. Käsitöö mehhaniseerimine liinitootmine automatiseerumine. 15.1.10. Tailorism ja fordism
frantically for new field ciphers. They found many good ideas in the writings of the dilettante cryptographers who had proposed ciphers for the protection of private messages. Soon some of these systems were serving in the various armies of Europe and the Americas. More ideas came from army officers who had studied cryptography in the courses in signal communication that the national military academies, such as St. Cyr, had added in the mid-1800s. Inevitably, cryptanalysts—who were either amateurs or soldiers with a professional interest, for full professionals there were none—replied with new techniques for breaking the new ciphers. From the slow crawl of nomenclator days, when the introduction of a special group meaning Disregard the preceding group would constitute a remarkable technical advance, the race between offense and defense in cryptology acclerated to its modern pace.
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