This website uses cookies to ensure you have the best experience. Learn more

Historic Development Of The Atom And Its Implications

1149 words - 5 pages

The atom has been suggested as the smallest complete part of matter since the time of the ancient Greek philosophers but they did not have a clear picture of the nature of the atom or any possible structure because of limitations to their scientific knowledge. Dalton was a scientist who suggested in 1810 that the principal feature of atoms is that an element is a pure substance because it contains identical atoms. This was the first time that atoms were regarded as identifiably unique because Dalton also proposed that atoms of different substances were different to each other, particularly because they had different atomic mass.Dalton's theory lead him to also suggest that compounds consisted of different elements whose atoms had been combined together and he therefore also put forward the idea that different compounds remained consistent in the ratio of the elements involved. Dalton also suggested that chemical equations occurred when combination of atoms were rearranged. Daltons model is shown belowThe problem with Daltons model is that it regarded atoms as units without structure and it needed further research to show that his model was incorrect. Thomson in 1904 put forward a model, which suggested that there were sub-atomic particles. Thomson suggested the atomconsists of a positively charged fluid in which negative electrons are embedded in the same way that fruit can be found throughout the ball of a pudding.For this reason, Thomson's model is sometimes referred to as the plum pudding model. This model was incorrect in the way that he imagined that an atom was structured but the important contribution was recognising that there were negatively charged particles such as electrons, which were balanced against positively charged material.Thomson's model is illustrated belowThis model was supported by Thomson's experiment using a cathode ray, which helped him to conclude that electrons are part of every atom, which was an important step formed and therefore lead to a better understanding of atoms.Thomson's Experiment is shown in the diagram belowThomson's theory suggested that the positive and negative charges were evenly distributed throughout the atom because Thomson argued that each electron repelled all the others and therefore they would be equally distributed in order to keep the forces small. Using this model, Rutherford set up an experiment in which he fixed positive alpha particles at a target of very thin gold sheeting. If Thomson was right, Rutherford expected that the alpha particles would pass straight through with very few deflections by the positive particles.However when the experiment was conducted, Rutherford found that many particles were scattered, that they often went through large angles and that an unexpected percentage actually came back from the foil. His conclusion was that the positive particles were not scattered throughout the atoms as suggested by Thomson but that there was a central positively charged nucleus,...

Find Another Essay On Historic development of the atom and its implications

History of the atom nickel Essay

1410 words - 6 pages model of the atom.1930 Paul DiracProposed anti-particles. Anderson discovered the anti-electron (positron) in 1932 and Segre/Chamberlain detected the anti-proton in 1955.1932 James ChadwickUsing alpha particles discovered a neutral atomic particle with a mass close to a proton. Thus was discovered the neutron.1938 Lise Meitner,Hahn, StrassmanConducted experiments verifying that heavy elements capture neutrons and form unstable

Analysis of the Hydrogen Atom

700 words - 3 pages not available on Earth. Our Sun, and most of our stars generate energy by fusioning hydrogen to helium. It is only available in compound form. Such as, oxygen being combined with hydrogen, making water or H2O. Or Carbon and Hydrogen combining to make Methane, or CH4. Henry Cavendish first discovered the use of Hydrogen energy, in seventeen sixty-six. Even today we use hydrogen as an energy source, because of its high efficient, non-polluting fuel

The Significance of the 14th Amendment and Its Implications on the Constitution

1185 words - 5 pages Bill of Rights to the states. The implications of this clause is felt in context of the implementation of various laws related to privacy laws, sodomy laws, abortion and related issues that pertain to the fundamental rights of individuals and their activities (Moore, 125). Conclusion It is important to note that constitutional values provide a base for constructing the relationship and interaction between the state and its citizens. The freedom and

The Evolutionary Importance of Maternal Anti-Bodies and its Implications on Evolution and Ecology

970 words - 4 pages us to hypothesize that maternal antibodies have a positive outcome on the growth and survival of the offspring. Although it is apparent that maternal antibodies have an effect on the early development of the immune system, research has shown that these antibodies could improve “juvenile immune response… [and thus] have potential for far-reaching fitness consequences.” (Boulinier and Staszewski 2008). There have been genetic factors associated

The State of Nature and its Implications for Civilization in Hobbes and Rousseau

1648 words - 7 pages The State of Nature and its Implications for Civilization in Hobbes and Rousseau In his Leviathan Thomas Hobbes expresses a philosophy of civilization which is both practical and just and stems from a clear moral imperative. He begins with the assertion that in the state of nature man is condemned to live a life “solitary, poore, nasty, brutish, and short.” It is in the interest of every man to rise above this “state of nature” and to give up

The Ethical Implications of the Human Genome Project and its Parallel Efforts

3349 words - 13 pages time when cooperation is of outmost importance. The availability of prenatal testing, and other genetic screening procedures that are already possible raise important and often controversial issues about the implications of the Human Genome Project and its parallel efforts. Genetics has been compared to the Eugenics movement of the 1920's, which eventually led to Hitler's genocide and concentration camps. Most would agree that this is a far off

Merck and Vioxx, the implications of new product development in the pharmaceutical industry

2228 words - 9 pages identified when the product had developed its position in the market (Grabowski, 2002). This paper examines product development processes for Vioxx, and analyses potential causes of the product's failure.Merck's product development processMerck operates in an extremely competitive industry. They are constantly faced with threats of cheap and competitive knock-off drugs upon the expiration of their patented proprietary drugs (Crawford, Benedetto, 2006

The HR Function and Its Implications in the Organization

810 words - 4 pages Summary Statement: This paper examines in detail HR function and its implications in an organization. The paper discusses how the HR function is handled in an organization. The paper explains what are the efficient ways to use it in an organization, its division and supervision strategies. Human resource function is the process by which the HR manager can ensure that the organization has correct number of employees with correct skills in

Evolution of Aesthetic Medicine and its Implications on Modern Society

987 words - 4 pages service rendered to those with the means to obtain it. It is clear that demand for aesthetic surgery has skyrocketed in recent years, an increase caused by modern marketing tactics, technological development, as well as the modern idea of individualism and self-expression through artificial body modification. Evidently, the use of traditional embellishments such as makeup and hairstyling are not enough for certain groups in today’s society. Many men

The Structure of the Atom. Rutherford's Experiment

583 words - 2 pages the footing B. The gold leaf was about 5*10-7 meter thick. The scientist knew that reckoning the scattering angle could say much about the structure of atoms of the gold-leaf.Rutherford made a theoretical analysis of angles of scattering in accordance with Thomson's theory of atom and in accordance with his own theory. Rutherford assumed that the charge of the nucleus was concentrated at its centre and devised a formula for how many particles

Race and its Implications in the Criminal Justice System

1276 words - 5 pages divided the nation and caused public uproar for some time. It did not take long for the trial to become one of race rather than murder. By the end of the trial a guilty versus not guilty verdict meant nothing of a murder but was a pit between blacks and whites and which side would prevail. Race was a part of the OJ trial before it even started and was a core part of the way things went throughout its completion. Blacks used OJ to bring to light the

Similar Essays

The Development Of The Atom Essay

500 words - 2 pages An atom is the smallest particle of an element that retains its identity in a chemical reaction. Also each one element’s atoms are different from another element’s atoms, and each atom of the same element is identical. They can be physically mixed together or chemically combined in simple whole number ratios. Last of all, chemical reactions have occurred when the atoms are joined, separated, or rearranged, but never changed. The

Marx And The Historic Evolution Of Communism

1016 words - 5 pages Marx & Historic Evolution of Communism By: Karl Marx although widely considered the father of Communism (as it is now recognized) was neither the first or last to try and design an equal society based around the state. Although Marx's model is by far the most detailed and widely considered feasible, it is based on the works of many other socialist thinkers through the ages. The goal of this essay is to examine the contributions of as many of

The Cinema And Its Environmental Implications

1248 words - 5 pages Every development project today is creating many implications on the environment, some of which do not entail positive growth but rather cause stress on the natural component. For small island states such as Malta, these implications, particularly in the entertainment sector, are an even greater matter of concern (Briguglio & Briguglio, n.d.). In response to these statements, this essay aims to discuss the processes and impacts of a cinema, both

The Model Of The Atom Essay

1412 words - 6 pages physics, one of the topics was Atomic and Nuclear physics. The topic was mainly about nuclear structure, radioactive decay, nuclear reactions and so on, but there was something in that topic that drew my attention, the model of the Atom. Ever since the fifth century, the understanding of the atom has evolved. The Greeks invented the idea of the atom, and they believed that it wasn’t physically divisible. Then, John Dalton revised the theory and