The collapse of the 1940 Tacoma Narrows Bridge stunned everyone‚ especially engineers. How could the most "modern" suspension bridge‚ with the most advanced design‚ suffer catastrophic failure in a relatively light wind? The State of Washington‚ the insurance companies‚ and the United States government appointed boards of experts to investigate the collapse of the Narrows Bridge. The Federal Works Administration (FWA) appointed a 3-member panel of top-ranking engineers: Othmar Amman‚ Dr. Theodore
Premium Suspension bridge Golden Gate Bridge Bridge
To begin‚ the Tang and the Song dynasty both overlapped the Tang dynasty was coming out and then the Song dynasty was coming in. The Tang dynasty 618-907 CE had many good things happen during the Period of Prosperity. One example is the Tang felt strongly about following the code of relationship the leaders would “father the empire and do there part. Another example where the Period of Prosperity happened in The Tang dynasty was the people would listen and obey to the quality leaders and that would
Premium China Tang Dynasty Han Dynasty
I am going to be talking about two dynasty’s‚ they are the Song and Tang dynasty. First‚ I’m going to talk about the Song dynasty. The Song Dynasty was during 960-1279 CE. They took power after rebellions and Tang on Tang warfare tore apart the Tang dynasty. The Song believed in educated leadership over a strong military. They also had a test for government leaders to prove if the men were smart enough to lead. That led to strong educated government. Under strong educated government the economy flourished
Premium China Han Dynasty Tang Dynasty
Spanish philosopher‚ George Santayana once wrote‚ “Those who cannot remember the past are condemned to repeat it.” This quote is widely used because of its relevance to a variety of topics. Engineers use reverse engineering to investigate an engineering failure and prevent it from happening again. We remember the tenth mission of the space shuttle Challenger that ended on January 28‚ 1986 in a catastrophic disaster. Seven astronauts were killed that day when the Challenger they were piloting‚ exploded
Premium Space Shuttle Space Shuttle Columbia Space Shuttle Challenger
The Collapse of the Ancient Regime. The memorandum sent to the king by the princes of the blood in December 1788 is a document of record; as it is the petition itself‚ not a record of it and it is a private source as it was generated solely for the use of the king‚ although the petition was published shortly afterwards‚ and therefore became a public source. The source was written in the period of the ancient regime‚ a month before the French revolution occurred in 1789 and is a strong
Premium Feudalism Estates of the realm French Revolution
The events that led to the collapse of the Roman Republic were as follows: During the early 1st century‚ there were many uprisings among non-Romans in Italy and Asia Minor due to their inability to vote since they were not Roman citizens; they had no voice in rulings that affected them. In addition‚ the citizens refused the non-Romans’ demands for citizenship purely out of greed as they wanted the spoils of war for themselves. At this tumultuous time‚ Lucius Cornelius Sulla‚ with his client army
Premium Roman Empire Ancient Rome Roman Republic
The Two dynasties that fascinate me the most are the Qin and the Tang Dynasty. These two dynasties separated by almost four hundred years developed themselves so drastically different that if they did not define themselves as Chinese they could be seen as two different empires. The Qin dynasty in particular took advantage of the confusion of the warring states period and using the mandate of heaven declared themselves the rulers of China. The Qin dynasty is extraordinary in what it achieved in such
Premium China People's Republic of China Han Dynasty
The Sui‚ Tang‚ and Song dynasties were historical Chinese Empires. The Sui Empire ruled from 581 to 618 A.D after the fall of the Han dynasty (Skaff‚ 2012‚ p5.). The Tang Empire‚ on its part‚ ruled China from 618 to 907 A.D after defeating Emperor Yang‚ the last Sui Empire (Skaff‚ 2012‚ p5). After the fall of the Tang Dynasty‚ the next half century in China experienced the division of the country into several kingdoms. In 960 A.D.‚ the Song dynasty came into power and reunified China. It lasted from
Premium Tang Dynasty China Song Dynasty
Several WAISers disagreed with Christopher Jones‚ who denied Reagan’s role in the collapse of the Soviet Union. Harry Papasotiriou writes: "The Soviet Union certainly collapsed of its own weight‚ but Reagan helped speed up the process. The following paragraphs are from a forthcoming book that I am co-authoring. Reagan’s conviction that the Soviet Union was both a dangerous military power and a collapsing economic system derived not from any deep knowledge of the Soviet Union. Yet he proved to be
Premium Ronald Reagan Cold War Mikhail Gorbachev
The Roman Empire and the Han dynasty were two of the most influential civilizations of all time. Their government‚ cultural ways of life‚ and philosophies are still used and widely practiced in today’s world. Even though the empires were many miles a part‚ they both shared similarities in running their empires. Also despite the very strong numbers and size of each society‚ both eventually fell under. The decline of each empire is very unique though the empires had many differences in the reasons
Premium Roman Empire Julius Caesar Roman Republic