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Posts Tagged ‘1820’

9
Jul

The History of Air Conditioning

   Posted by: Mike    in History Blog, History Today, Modern History, Technology History, World History

Wind Tower in Dubai: Old-fashioned air-conditioning. The tower catches wind from four directions and channels it down into the house.One of the many modern conveniences that people in general appreciate is air conditioning. I live in the South and I appreciate central air conditioning immensely especially during the summer months but the air conditioning we are familiar with is a fairly recent invention even if the idea of artificially cooling a structure is not. In fact, affluent Romans circulated aqueduct water through the walls of their homes to cool them and there were rotary fan devices used in the Chinese Han, Tang, and Song Dynasties from the 2nd century to about 1279. These fans were operated by hand initially and transitioned to water powered systems that were fairly widespread.

Medieval era societies used some ingenious devices to provide cooling. The Persians used large open pools of water called cisterns to collect rainwater. They used a system of windows and vanes to move wind across the evaporating water to cool their buildings. In Egypt, ventilators were developed that were common in homes and helped move warm air out of the houses. British scientist Michael Faraday in 1820 demonstrated that compressing liquefied ammonia and evaporating it could cool the air. Then John Gorrie, a Florida doctor, used the compressor technology to make ice in 1842 and he used it to regulate the temperature at his hospital in Apalachicola, Florida. He was unable to further develop his invention because of his main financier’s untimely demise and after his death in 1855 the whole concept of air conditioning faded for a few years.

diagram of a modern air conditioning unitThe first modern electrical air condition system was designed in 1902 by Willis Haviland Carrier in Syracuse, NY. It was originally invented to control the temperature and humidity in a printing plant to help keep the paper from changing dimensions and throwing off the ink alignment. This technology was soon developed to meet workplace demand and was adapted to provide comfort for homes and automobiles so The Carrier Air Conditioning Company of America was born. The residential application of his technology boomed in the 1950s.

The first air conditioning units used toxic or flammable chemicals such as ammonia, propane and methyl chloride which were dangerous if they leaked. Freon was developed by Thomas Midgley Jr. in 1928 and was a much safer chemical. However it was later found to harm the atmosphere and deplete ozone. Freon is trademarked


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by DuPont and several blends have been developed using a number system such as R-12, R-22, and R134A and these are being fazed out of use. Some more environmentally sound alternatives have been developed by companies like Honeywell and are being offered commercially. Air conditioning technology continues to advance and become more energy efficient but I for one am extremely glad that it makes our modern existence so comfortable.

Tags: 1279 A.D., 1820, 1842, 1855, 1902, 1928, 2 A.D., air conditioning, air conditioning in Chinese Han Dynasty, air conditioning in Song Dynasty, air conditioning in Tang Dynasty, air cooling history, artificial cooling, Carrier Air Conditioning Company of America, Chinese rotary fan devices, circulated aqueduct water, compressor technology, Dupont, Egyptian air conditioning, first modern electrical air condition system, History DVDs, Honeywell, invention of Freon, John Gorrie, medieval air conditioning, medieval air cooling, Michael Faraday, Persian air conditioning, replica guns, Replica Swords, scale model kits, Thomas Midgley Jr., Willis Haviland Carrier, wind tower

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23
Jun

European Colonialism in the Middle East

   Posted by: Administrator    in African History, Colonial History, English History, French History, History Blog, Middle Eastern History, World History

European Colonialism in the Middle EastThe late nineteenth and early twentieth centuries were the height of European colonial activity in the Middle East. This was a period during which the British were involved in the affairs of Egypt and the Sudan as they formed alliances in the region for economic purposes. In 1820 the British and the Gulf-region sheikhs established economic pacts that would guarantee the British access to Gulf-region resources and in 1839 they annexed Aden. The British went to war with Iran in 1856 over rights of way to India and China through Iran and later, in 1907, England and Russia would vie for power in Iran and divide it for their interests. The Italians entered the Middle East also at the beginning of the 20th century, establishing presence in Libya through a series of campaigns over a twenty year period.

The French Conquest of AlgeriaThe French, in turn, gained control over Algiers in 1830 and also pressed into Lebanon in 1860. In 1881 the French established a protectorate in Tunisia and would through the northern gateway of Africa establish a presence in what are today the modern nations Senegal, Mauritania, Chad, the Republic of Congo, the Central African Republic, Niger, Guinea, Mali, Cote d’Ivoire, and Benin. France’s intention was to establish a firm east-west axis of control across the African continent in opposition to the British Empire’s north-south axis of power. The two imperial powers were at odds, though by 1904 the two had reached a series of agreements under the Entente Cordiale which eventually led the way for Britain to support France’s grab for Morocco as a French protectorate. Previously, in 1869, the French and British had collaborated with their financing to assist the Egyptians in construction of the Suez Canal.

The Elgin marblesThe colonies of the Middle East were exploited for their resources and their strategic location as well as for the wealth of their artistic traditions, brought back to Europe in the antiquities trade. Sometimes with the assistance of their hosts, the British and other European powers returned to their countries with cultural treasures


destined for the museums of the future. This is how the Parthenon’s treasured “Elgin Marbles” were taken from their place of origin at the Acropolis, at the time an Ottoman military fort, to the British Museum.

The colonial era in the Middle East also led to greater European travel in the region and a fascination for all things from Africa and the Near East.

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Tags: 1820, 1839, 1856, 1856 British war against Iran, 1869, 1881 French Tunisian Protectorate, 1904, 19th Century - Authentic Muskat of Oman Coins, Acropolis, Aden, Algerian colony, Algiers history, and Benin, british colonialism in middle east, British Museum, Chad, Cote d'Ivoire, Egypt history, Elgin Marbles, Entente Cordiale, french colonialism in middle east, French conquest of Algeria, Guinea, Gulf region history, Historic Israel on DVD, Historical 1950s Iran Film Series DVD, history of Senegal, Iran history, Lebanon 1860, Libya history, Mali, Mauritania, Middle East CD-ROM Lesson Plan Set 5 with DVD, middle east colonialism, Morocco history, Niger, Ottoman Empire, Parthenon, Russian history in middle east, Suez Canal history, the Central African Republic, the Republic of Congo

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10
Mar

Harriet Tubman and the Underground Railroad

   Posted by: Trish    in American History, Cultural History, History Blog, Holiday History, Personalities in History, U.S. Civil War, World History

Harriet Tubman and the Underground RailroadMarch 10, 1913 saw the death of the one of America’s most inspiring women. A civil rights leader, a freedom fighter, a risk taker and a former slave, Harriet Tubman’s life is commemorated each year on the anniversary of her death. Not only a great woman and an African American icon, Tubman is an American inspiration.

Born into slavery in 1820, Tubman escaped a stifling existence in 1849 when she ran away from the fields to save for a life with the free man she married five years earlier. Tubman traveled night and day by foot all the way to Philadelphia where she found work and set up home.  After saving her money for a year, Tubman journeyed back to Maryland to pick up her sisters and escort them to freedom.

Tubman returned to the south again to pick up her brothers. When she returned once more to the South to get her husband, Tubman discovered he had become a bigamist, remarrying in her absence. Instead of bringing him north to start their life together, Tubman took the rejection in her stride, found other slaves in need of assistance and conducted their safe passage to Pennsylvania. Tubman would make a total of 19 recorded trips to the south to rescue approximately 300 slaves.

Harriet Tubman and the Underground Railroad: The Slave TradeWanted poster’s dotted the south, calling for Tubman’s capture. The reward reached a staggering $40,000, showing the impact of Tubman’s bravery. Others were inspired by her work and her determination and the Underground Railroad blossomed.

The Underground Railroad was one of the first national social networks and consisted of both former slaves and northern abolitionists. Tubman did not start the network but became the poster child for its success. Her work as a conductor (one who entered a plantation posing as a slave and encouraging and guiding others in their escape) led her into danger time and again, but it seemed nothing could stop her efforts.

Running for decades, the railroad conductors and their assistants led thousands of former slaves to freedom.  Conductors acted as guides taking the former slaves from house to house (safe houses were often lit with a single candle in the front window) along well established routes. Tubman conducted both friends and family as well as total strangers to the safety of large northern cities where freed slaves could hide, find work and begin new lives.

Harriet Tubman and with rescued slaved - New York Times10 years passed and Tubman retired from actively conducting slaves to working as a spokeswoman and abolitionist in the north. After all her work and a truly inspiring life, Harriet Tubman became known as a “Moses of the people,” leading folks out of drudgery and imprisonment to freedom and self determination.

During the Civil war, Tubman did not rest on her laurels but worked as a nurse, a cook and a spy for the Union Army. Her work was commemorated by civil rights leaders, American presidents and even in 1990, an act of Congress that declared March 10 Harriet Tubman Day in honor of all that she did for the progression of human rights in America.

When Tubman met up with the escaped slaves who feared recapture, she would always tell them “you’ll live free or die.” Tubman’s words express what it was to be a true American during the violent and trying times of slavery. And whether black, white, former slave or modern American, the words still find resonance today.
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Tags: 1820, 1849, 1913, Abolitionist, African American icon, american civil rights leader, American Civil War Union Artillery Scale Model Kit Italeri 1:72 (25mm), american freedom fighter, civil rights leader, Civil War, Civil War Store, Harriet Tubman, harriet tubman day, live free or die, March 10, Moses of the people, one of the first national social networks, runaway slaves, slave safe houses, Slavery, The Civil War and the Constitution 1859-1865 on CD, The Civil War Omnibus 1 Histories of the Civil War, Underground Railroad, wanted poster of harriet tubman

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