Differences Between Carbon-12 and Carbon-14

Differences Between Carbon-12 and Carbon-14 Carbon-12 and carbon-14 are two isotopes of the element carbon. The difference between carbon-12 and carbon-14 is the number of neutrons in each atom. The number given after the atom name (carbon) indicates the number of protons plus neutrons in an atom or ion. Atoms of both isotopes of carbon contain 6 protons. Atoms of carbon-12 have 6 neutrons, while atoms of carbon-14 contain 8 neutrons. A  neutral atom would have the same number of protons and electrons, so a neutral atom of carbon-12 or carbon-14 would have 6 electrons. Although neutrons do not carry an electrical charge, they have a  mass comparable to that of protons, so different isotopes have different atomic weight. Carbon-12 is lighter than carbon-14. Carbon  Isotopes and Radioactivity Because of the different number of neutrons, carbon-12 and carbon-14 differ with respect to radioactivity. Carbon-12 is a stable isotope. Carbon-14, on the other hand, undergoes radioactive decay: 146C → 147N 0-1e (half-life is 5720 years) Other Common Isotopes of Carbon The other common isotope of carbon is carbon-13. Carbon-13 has 6 protons, just like other carbon isotopes, but it has 7 neutrons. It is not radioactive. Although 15 isotopes of carbon are known, the natural form of the element consists of a mixture of only three of them: carbon-12, carbon-13, and carbon-14. Most of the atoms are carbon-12. Measuring the difference in the ratio between carbon-12 and carbon-14 is useful for dating the age of organic matter  since a living organism is exchanging carbon and maintaining a certain ratio of isotopes. In a diseased organism, there is no exchange of carbon, but the carbon-14 that is present undergoes radioactive decay, so over time, the isotope ratio becomes more and more different.

Thirst for Freedom essays

Thirst for Freedom essays Thirst for freedom HARRIET TUBMAN In 1820, Benjamin Ross and Harriet Greene both slaves in Buck Town Maryland gave birth to Araminta Greene also born a slave. Araminta lived some 90 years of hardship and peerless journeys to free her people from slavery. Cruelty and unbearable living conditions were a norm for these times. First, we'll need some background on the institution of slavery, which began in the early 15th and 16th century recorded in the ancient history of Babylon and Rome. Portuguese explores living east of Africa provided slave labor for Whites, West Indies and Spanish Plantation owners; in 1660 Virginia Law decreed slaves would serve their masters for life. With the development of plantation land and its five staples of produce Rice, Cotton, Sugar, Tobacco and Coffee required strenuous work to harvest. At the age of six Araminta was taken from her parents to live with James Cook, whose wife was a weaver, to learn the skills of weaving. James Cook would order her to guard his muskrat traps, which compelled her to wade through the water. Once she was sent when she was ill with the measles, and caught a cold from wading in the water and she grew very sick. Her mother convinced her master to take her away from the Cooks until she could recuperate. After she entered her teens she was hired out as field hand. In the fall of that same year slaves were required to work evenings, cleaning up wheat, husking corn, etc. On one afternoon one of the slaves of a farmer named Barrett, left work and went to the village store without permission. The overseer and Araminta followed him. When the slave was found, the overseer swore he would whip the slave, and called on Araminta and others to help tie him. She refused and as the man ran away the overseer picked up a two-pound ...

Political Violence During Reconstruction Essay Example

Political Violence During Reconstruction Essay Example Political Violence During Reconstruction Paper Political Violence During Reconstruction Paper Political Violence during Reconstruction; makes it obvious that in many ways the struggles of getting along were far from over. The relationship between the white man and black man was In constant turmoil, and the political problems In the South did not help either. Harsh feelings and an extensive struggle for power was the problems which the united States faced. Many often think of the United States as peaceful after the Civil War was over, but this is far from the truth. Hyde shows how evident it was that unity of this nation was far from being reached. The carpetbaggers were northerners who supposedly carried all their belongings in a satchel made of carpet material as they came south to exploit the defeated region of the South. The white Southerners gave them this degrading name to them because they wanted to maintain control in the South. The old ruling aristocracy believed that they were born to govern, without question, not only their slaves but the white people too. The local people who supported the Republican Party and what they were trying to accomplish were known as scalawags. Scalawags and arbitragers were the names given to those by the white people in the South that wanted to keep running things their way. They did not want things to change. They had a lot of power and control not wanting anything to happen to It. One can only imagine the harsh feelings In the middle of these translators after the Civil War. Along with these harsh feelings came the problems with the lower-class Louisianan in dealing with the planter elite. The lower-class Louisianan wanted to create equality between them and the planter elite in their state. They felt that wings were not fair and change was needed for the better of society. They were encouraged to reassess their fealty to these planters. Through newspapers and other ways these Louisianan felt that they needed to raise their own crops and be independent from working under these planters. However, these elite planters presented themselves as victims of tyrannical outsiders who sought not to create equality between them but to make the lower class more dominant In order to make them serve the lower classes needs. The lower class may have wanted to know what It was to be served, or they really did Just ant to have an equal opportunity at life. This proved unsuccessful because of the power and resources the elite planters had already obtained. Another struggle for power resulted in many Florida parishes along with other parts of the country almost immediately after the war was over. Freedmans Bureau agents under the federal government, Federal soldiers, and blacks all suffered attack after attack from anyone who wanted to. Shootings and stabbings were very frequent and almost nothing was done about them. Local law enforcement that tried o do anything about it resulted in utter failure, and many times it was laughed at. Insufficient manpower and a slow-moving bureaucracy were so slow to get a case together to prosecute somebody, many other Incidents had already occurred. People that were taken to court were usually let off with absolutely no charges no matter what had happened. Federal authorities were not respected because It was literally a joke to take seriously. They could not enforce any laws because of its vast weakness. With the weakness and lack of any federal and local authorities, two independent ND separate white supremacy organizations were created. The UK Klux Klan and the Knights of the White Camellia were the two major white supremacy organizations. Each group functioned separately with its own set of methods and even purposes. Reports of these groups started to circulate in the late asses. Members of the UK Klux Klan were so obsessively secret that nobody knew for sure if they even existed in some places. Members of the White Camellia openly admitted their existence and even denied any knowledge of the UK Klux Klan. Both of these organizations believed they needed to preserve the superiority of the white race. The purposes of these organizations did differ greatly. Members of the Knights of the White Camellia committed their lives to defending the social and political superiority of the white and in all places to observe a marked distinction between the white and African races. The UK Klux Klan believed that they must not only make a distinction, but also meet any problems with the black race with death as a traitor. The Klan was more violent than the White Camellia. The White Camellias members ere usually looking to keep leadership in the hands of whites. They controlled a lot of political seats and made up much of the business and professional class. The Klan was mostly younger men who were known as characters who drink and do what they want. Through all of the fighting and struggles that had been going on since the Civil War, many were starting to get used to the idea of fighting as a means to solve their problems. They did not necessarily cause an increase in the amount of fighting internally as a whole for the future, but did cause certain aspects of life to be more seed to the fact of violence. The argument could go either way, but overall influence of fighting in the future did not affect it that much. Through the writings of Samuel C. Hyde a person really get a grasp of what went on after the Civil War. Problems that were thought to have been solved as soon as the war was over resumed for many years to come. The constant struggle of power mainly of the white men led to so many problems and even death in many cases. One can really get a grasp of the true struggles that went on shaping our nation into what it is today.

The Life and Accomplishments of Marcus Aurelius

The Life and Accomplishments of Marcus Aurelius Marcus Aurelius (r. A.D. 161-180) was a Stoic philosopher and one of the five good Roman emperors (r. A.D. 161-180). He was born on April 26, A.D. 121, according to DIR Marcus Aurelius, or perhaps April 6 or 21. He died on March 17, 180. His Stoic philosophical writings are known as the Meditations of Marcus Aurelius, which were written in Greek. He was succeeded by his son the infamous Roman emperor Commodus. It was during the reign of Marcus Aurelius that the Marcomannic War broke out at the northern frontier of the empire. It was also the time of the important physician Galen who wrote about a particularly virulent pandemic that was given Marcus Aurelius family name. Quick Facts Name at birth: Marcus Annius VerusName as emperor: Caesar Marcus Aurelius Antoninus AugustusDates: April 26, 121 - March 17, 180Parents: Annius Verus and Domitia Lucilla;Adoptive father: (Emperor) Antoninus PiusWife: Faustina, daughter of Hadrian; 13 children, including Commodus Family History and Background Marcus Aurelius, originally Marcus Annius Verus, was the son of the Spanish Annius Verus, who had received patrician rank from Emperor Vespasian, and Domitia Calvilla or Lucilla. Marcus father died when he was three months old, at which time his grandfather adopted him. Later, Titus Antoninus Pius adopted Marcus Aurelius at the age of 17 or 18 as part of an agreement he had made with Emperor Hadrian promoting Antoninus Pius to the status of heir. Career The Augustan History says that it was when Marcus was adopted as heir that he was first called Aurelius instead of Annius. Antoninus Pius made Marcus consul and caesar in A.D. 139. In 145, Aurelius married his sister by adoption, Faustina, daughter of Pius. After they had a daughter, he was granted tribunician power and imperium outside Rome. When Antoninus Pius died in 161, the Senate awarded the imperial power to Marcus Aurelius; however, Marcus Aurelius gave joint power to his brother (by adoption) and called him Lucius Aurelius Verus Commodus. The two co-ruling brothers are referred to as Antonines as in the Antonine plague of 165–180. Marcus Aurelius ruled from A.D. 161-180. Imperial Hotspots SyriaArmenia (Marcus Aurelius took the name Armeniacus)Parthia (took the name Parthicus)Chatti (took the name Germanicus by 172 since the name appears in inscriptions then [Cassius Dio])BritonsMarcomanni (when Aurelius defeated them and freed the Pannonian provinces, he and his son Commodus celebrated a triumph) Plague As Marcus Aurelius was preparing for the Marcommanic War (along the Danube, between Germanic tribes and Rome), a plague broke out killing thousands. The Antonini (Marcus Aurelius and his co-emperor/brother-by adoption) helped with burials expenses. Marcus Aurelius also aided the Romans in time of famine and so is thought of as a particularly benevolent rule. Death Marcus Aurelius died in March 180. Before his funeral, he had been declared a god. When his wife, Faustina, had died in 176, Marcus Aurelius asked the Senate to deify her and built her a temple. The gossipy Augustan History says that Faustina had not been a chaste wife and that it was considered a stain on Marcus Aurelius reputation that he promoted her lovers. Marcus Aurelius ashes were put in Hadrians mausoleum. Marcus Aurelius was succeeded by his biological heir, in contradistinction to the previous four good emperors. Marcus Aurelius son was Commodus. The Column of Marcus Aurelius The Column of Marcus Aurelius had a spiral staircase leading to a top from which one could view the Antonine funerary monuments in the Campus Martius. Marcus Aurelius German and Sarmatian campaigns were shown in relief sculptures spiraling up the 100-Roman-foot column. 'The Meditations' Between 170 and 180, Marcus Aurelians wrote 12 books of generally pithy observations from what is considered a Stoic perspective while emperor, in Greek. These are known as his Meditations. Source â€Å"Marcus Aurelius Antoninus - 1911 Encyclopedia Britannica - Bible Encyclopedia.†Ã‚  StudyLight.org, www.studylight.org/encyclopedias/bri/m/marcus-aurelius-antoninus.html.

Quote by Bill Cosby on Success Assignment Example | Topics and Well Written Essays - 250 words

Quote by Bill Cosby on Success - Assignment Example During that time, I experienced the fear of failure many times. I was often not sure whether I had made the right decision or not. The first year that I was here, the language year, I studied and worked hard without thinking about my fears. I attempted to make my desire to succeed more than my fear of failure, and so that’s what I did. I had expected to be studying language for a whole year, but after only six months I passed the TOEFL test needed to enroll in Embry-Riddle. After taking some time for reflection, I realize that if I did not make my desire for success greater than my fear of failure, then I never would have made it to ERAU. When Christopher Columbus set out to find India, he was not sure of what he was getting himself into. No one had ever sailed far enough west before to discover new lands. Columbus already knew that the world was round (he also knew that India was in the east), so if he sailed west he would eventually find it. There was a chance that Columbus would die in his voyage to discover India. However, Columbus was determined enough to travel through uncharted waters that his desire for success was greater than his fear of failure. Of course, we all know that Columbus did not find India, but in fact discovered the Caribbean and then what is now known as the United

Unit 6 n&w Coursework Example | Topics and Well Written Essays - 2000 words

Unit 6 n&w - Coursework Example For instance if the calcium intake is poor, the baby will draw calcium from the mother’s bones. Low folate levels can lead to birth defects. The article specifies the quantity of each of the nutrients essential for a healthy baby and a healthy pregnancy term. The article does suggest recommended servings but does not specify what food should be avoided during pregnancy. As far as exercises and weight gain is concerned, it has been suggested to consult the doctor. Another article, written for BabyCenter (2008), details exactly what should and should not be eaten during pregnancy. While the first article suggests that extra 300 calories are required from the second trimester, this article suggests that 200 calories are required from the third trimester only. The article for BabyCenter gives more importance to the quality of food than to the quantity. It highlights the food that should particularly be avoided and advises some antenatal vitamin-mineral supplement along with food. It strongly advises against weight loss during pregnancy and weight gain should be gradual. The second article is much more comprehensive as it gives more details on a balanced diet while suggesting against particular foods during pregnancy. It also explains the reasons behind its advices. Thus, comparing it with what we have learned, it is not only important to know whet to eat but equally important to know what should be avoided. Secondly, it is not important to adhere to 3 to 5 meals per day but it should be tailored according to what the body can take. An individual body may take food in small quantities 5 to 6 times a day and this is considered normal. However, alcohol, caffeine and junk food should be avoided as far as possible during pregnancy. According to World Health Organization infants should be exclusively breastfed for the first six months for optimal growth, health and development (Health Canada, 2005). Thereafter they should be gradually introduced to

Slavery and the Constitution Essay Example | Topics and Well Written Essays - 500 words - 1

Slavery and the Constitution - Essay Example Thomas Jefferson, a former president of the United States did not support slavery. He considered slavery as a breach of the laws of the nature (Beamount 4). Jefferson had taken actions that he thought would end servitude and slavery. One of his moves was the drafting of the law in Virginia in the 1700s. These laws forbid the transportation of African slaves. He started plan for slower redemption of slaves by indicated that after certain period they would go free. However, regardless of his labors Jefferson found himself retaining slaves. He was not successful and died before implementing his decisions. President Lincoln was another person who advocated for the elimination of slavery. During the civil war, Lincoln issued a liberation proclamation. This order advocated for the release of many slaves that were subjected to the acts of slavery and servitude. Other people such as the spiritual leaders were in opposition to slavery (Finkelman 18). They found that the act were against their sacred teachings. They thus made moves that helped to end slavery. Most people in the south, especially owners of plantations wanted the prolongation of slavery because they benefited from the labor that the slaves offered. Even the white southerners who did not own plantations felt that the abolition of slavery would have led to decline of their economy. The southerners had commenced to incorporate slavery and assumed that they had the right to own slaves. Most southerners thought that slavery plus servitude should proceed. The criticisms of slavery by people who were against it led to a need of constitution amendment. Various leaders including President Lincoln had pressed for the changes of the constitution. Religious leaders also contributed by preaching the negatives of slavery. They advocated for immediate changes of the constitution to end the sufferings that slaves went through