...There are five scientists who helped shape not only atomic theory but also our perspective of the atom. Dalton, Bohr, Rutherford, Planck, and Millikan, each of these scientists contributed to atomic theory in their own way and enhanced our knowledge of the atom. John Dalton is known for his work of gas laws (i.e. Dalton’s law) but also his work to lay the ground work for atomic theory. In the year 1800 Dalton presented a paper which was on the constitution of mixed gasses. This would lead him to develop his gas law and also affect others, such as Charles and Gay-Lussac. This research would also lead him to research atomic weights, which lead to his contribution in 1805. Dalton theorized that elements are made of extremely small particles called atoms. Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass and other properties. Atoms cannot be subdivided, created, or destroyed. Atoms of different elements combine in simple whole-number ratios to form chemical compounds. In chemical reactions, atoms are...
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...The University of Copenhagen is where Niels Bohr went to school following his passion in physics. Bohr would go on to do great things with the help and influence of his father and his father's best friend Professor Hoffding, to steer the way for him to become the person he visualized and set to be. To begin with, Bohr a very educated and sought after education to always learn, was introduced to epistemology, the theory of knowledge that justifies the differences from others opinions, capturing a thought to learn right from wrong. He learned philosophy and became a part of him to discover things himself which he would later on do. Bohr and a classmate name Harald were a part of a class with Professor Hoffding, as they debated philosophy,...
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...OPPapers.com FREE ESSAYS AND RESEARCH PAPERS Join Login Writing Service Resources Help Saved Docs Contact Us SEARCH Get Better Grades Today By Joining OPPapers.com and Accessing Over 650,000 Articles and Essays! GET BETTER GRADES Home Page »Science »Chemistry Research Papers There Is No Hope of Doing Perfect Research (Griffiths, 1998, P97) There Is No Hope of Doing Perfect Research (Griffiths, 1998, P97) Syed Hussamuddin Ahmed Course name: Instructor: Date: 04 / 11 / 2010 There is no hope of doing perfect Research (Griffiths, 1998, p97) Research implies ‘searching again’. It is a careful study of a subject, especially in order to discover new facts or information about it (http://www.oxfordadvancedlearnersdictionary.com/dictionary/research). Research can be Qualitative or Quantitative (Research, wikipedia) It is a methodical investigation into a subject in order to discover facts, to establish or revise a theory or to develop a plan of action based on the facts discovered (Research, Microsoft Encarta Dictionary, 2009). Data is collected on a particular subject from various sources.Psychology differs from person to person, because of this the synthasised information results in inaccuracy. Results derived from a research never change in a perfect research. But this is rare. Thompson laid down his atomic model resembling a water melon, and electrons embedded Is this essay helpful? Join OPPapers to read more and access...
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...Kyle Warmuth Physics 2010 Research Paper John Dalton John Dalton contributed a lot towards advancing in chemistry and in physics. His most well known accomplishment was his work on atomic theory. This theory was based on his studies with gases and their reactions with each other. This theory was the most important discovery of its time, leading the way to what we know chemistry to be today. Dalton also is known for Law of Multiple Proportions, and Law of Partial Pressures. Chemistry was not Dalton’s first interest though; he was first interested in the weather and color blindness, after considering law and medicine (wikipedia). John Dalton was born in Eaglesfield, Cumberland, England, on September 6 1766. His family was Quaker; he was a son of a weaver. He joined his older brother Jonathan and ran a Quaker school in Kendal at the age of 15 (wikipedia). The school taught languages, 21 mathematics, and science courses, at one point they had 60 students. Though the school was popular they did not make any money, so for extra income Dalton wrote answers to “ladies questions” in magazines (Blamire). After teaching for a while he considered taking up medicine or law but his relatives did not show enthusiasm for either subject. He then moved to Manchester where he became a teacher of mathematics and natural philosophy at the “New College.” He got this position through a blind philosopher and polymath John Gough; Dalton owes much of his scientific knowledge to...
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...The 20th Century Genius Award Hum/102 October 19, 2011 The 20th Century Genius Award The nominated figure that stands out in my mind as a genius of Western culture would be Albert Einstein. His work and cultural contributions can be classified in both the Age of Modernism and the Age of Pluralism for the 20th Century Genius Award. The following examples will include a synopsis of the life and times of Albert Einstein, A survey of the ideas and works recognizing the reflections of his genius, and an appraisal of his impact on the arts and culture. Albert Einstein was born on March 14, 1879 to Hermann and Pauline Einstein a scientifically minded family, who were non-practicing Jews in Ulm, Wurttemberg Germany. As a child, he was very curious, and lively. Albert attended a Catholic elementary school, and his mother insisted for him to take violin lessons. Although he detested the lessons, and later on decide not to continue with them, he would later on find an appreciation and great comfort in Mozart’s violin sonatas. At the early age of five, Albert was fascinated by complex scientific and mathematical concepts at a very early age. Hermann Einstein shows his son a pocket compass, and Einstein with his sense of wonder, and curiosity realizes that something in “empty” space controlled the needle; he later on describes the experience as a revelation of his life. Albert Einsteins hobbies was to build models and mechanical devices for his amusement although he showed...
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...charged particles is integral to the understanding of electrical forces. The lesson begins with traditional activities of charging objects by friction and comparing electrostatic forces to magnetostatic forces. The traditional experiments are explained in terms of the model of an atom, and the “attract and repel force rules” are explored and expanded. Devices to create, store, and measure charge are utilized in experiments. The formal theory of Coulomb’s law is introduced, and problems are assigned utilizing that theory. Elements of the historical development of electrostatics and planetary model of the atom are researched, and students have an assignment describing contributions of historically important scientists. Additional concepts of electric fields, potential difference, and properties of conductors and insulators are developed through experiment, demonstration, and discussion. TEKS: |P.5 |The student knows the nature of forces in the physical world. The student is expected to: | |P.5A |Research and describe the historical development of the concepts of gravitational, electromagnetic, weak nuclear and strong nuclear | | |forces. Supporting Standard | |P.5C |Describe and calculate how the magnitude of the electrical force between two objects depends on their charges and the distance | |...
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...research papers Acta Crystallographica Section D Biological Crystallography ISSN 0907-4449 Protein imperfections: separating intrinsic from extrinsic variation of torsion angles Glenn L. Butterfoss,a Jane S. Richardsonb and Jan Hermansa* a Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, Chapel Hill, NC 27599-7260, USA, and bDepartment of Biochemistry, Duke University Medical School, Durham, North Carolina 27710-3711, USA Correspondence e-mail: hermans@med.unc.edu In this paper, the variation of the values of dihedral angles in proteins is divided into two categories by analyzing distributions in a database of structures determined at a resolution of Ê 1.8 A or better [Lovell et al. (2003), Proteins Struct. Funct. Genet. 50, 437±450]. The ®rst analysis uses the torsion angle for the CÐC bond (11) of all Gln, Glu, Arg and Lys residues (`unbranched set'). Plateaued values at low B values imply a root-mean-square deviation (RMSD) of just 9 for 11 related to intrinsic structural differences between proteins. Extrapolation to high resolution gives a value of 11 , while over the entire database the RMSD is 13.4 . The assumption that the deviations arise from independent intrinsic and extrinsic sources gives $10 as the RMSD for 11 of these unbranched side chains arising from all disorder and error over the entire set. It is also found that the decrease in 11 deviation that is correlated with higher resolution structures...
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...579 Atomic force microscopy and other scanning probe microscopies Helen G Hansma and Lía Pietrasanta The highlight of the past year is the unfolding and refolding of the muscle protein titin in the atomic force microscope. A related highlight in the intersection between experiment and theory is a recent review of the effects of molecular forces on biochemical kinetics. Other advances in scanning probe microscopy include entropic brushes, molecular sandwiches and applications of atomic force microscopy to gene therapy. Address Department of Physics, University of California, Santa Barbara, CA 93106, USA Current Opinion in Chemical Biology 1998, 2:579–584 http://biomednet.com/elecref/1367593100200579 © Current Biology Ltd ISSN 1367-5931 Abbreviations AFM atomic force microscopy/microscope SFM scanning force microscopy/microscope SICM scanning ion conductance microscopy/microscope SPM scanning probe microscopy/microscope STM scanning tunneling microscopy/microscope A new journal, Probe Microscopy, was launched in 1997 as a forum specifically devoted to the science and technology of SPM. AFM and SFM have been also newsworthy items in Science and Nature in the past year [14••,15•–17•,18••,19]. An introduction to AFM is covered well in a recent issue of Current Opinion in Chemical Biology, which describes and illustrates the design and mode of operation of AFM [4••]. The AFM images sample surfaces by raster-scanning a sharp tip back and forth over the surface. The tip is on...
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... Cantoria focused her research efforts on the morphology, physiology and biochemistry of drug plants. She has done basic studies on the pharmacognosy (study of medicines derived from natural sources) of agar, rauwolfia, datura, mint and Piper species. For her research paper on the morphology and anatomy of rauwolfia vomitoria Afz., Cantoria received the Edwin Leigh Newcomb Award in pharmacognosy given by the American Foundation for Pharmaceutical Education in 1954. She again received this award in 1962 for her research work on the growth and development of Daturia strasmodium L. She is also the recipient of the Phi Sigma awards for marked distinction in biology in in 1951 and was proclaimed the Most Outstanding Phi Sigman in 1977. Paulo C. Campos, MD is noted for his work in nuclear medicine. As a health scientist, Campos authored and co-authored 75 scientific publications, some of which have won awards. Three of his works, titled Observation of Some Parameter of Insulin Action, Cr-51 Tagged Red Cell Studies and The Genetic Factor in Endemic Goiter, have won the first prize in Research Award. For his achievements in the field of medical research, Campos was named conferred the Gregorio Y Zara award as an outstanding scientist by the Philippine Association for the Advancement of Science (PAAS). He was credited for establishing the first known radioisotope laboratory in the country and the first research laboratory of the University...
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...Other academic advisors | László Rátz | Doctoral students | Donald B. Gillies Israel Halperin | Other notable students | Paul Halmos Clifford Hugh Dowker Benoit Mandelbrot[1] | Known for | [show] | Notable awards | Bôcher Memorial Prize (1938) Enrico Fermi Award (1956) | Signature | John von Neumann (/vɒn ˈnɔɪmən/; December 28, 1903 – February 8, 1957) was a Hungarian and American pure and applied mathematician, physicist, inventor and polymath. He made major contributions to a number of fields,[2] including mathematics (foundations of mathematics, functional analysis, ergodic theory, geometry, topology, and numerical analysis), physics (quantum mechanics, hydrodynamics, and fluid dynamics), economics (game theory), computing (Von Neumann architecture, linear programming, self-replicating machines, stochastic computing), and statistics.[3] He was a pioneer of the application of operator theory to quantum mechanics, in the development of functional analysis, a principal member of the Manhattan Project and the Institute for Advanced Study in Princeton (as one of the few...
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...discoveries of Radium and Polonium. Paul Dirac (England) - An important contributor in the fields of QuantumMechanics and Electro Dynamics, Dirac was co-winner of the Nobel Prize inPhysics (1933). Albert Einstein (Germany) - Arguably needing no introduction, the most famous scientist that lived and a name that has become synonymous in popular culture with the highest intelligence. Enrico Fermi (Italy) - Heavily involved in the development of the world's first nuclear reactor and his work in induced radioactivity saw him awarded with the 1938 Nobel Prize in Physics. Vitaly Ginzburg (Russia) - One of three recipients of the 2003 Nobel inPhysics for their pioneering work in the theory of superconductors and superfluids. Christiaan Huygens (Netherlands) - Most well known for his wave theory of light, Huygens is credited with discovering the first of Saturn's moons. Werner Israel (Canada) - In 1990 Israel co-pioneered a study on black hole interiors. Ali Javan (Iran) - Born in Tehran, Ali Javan is listed as one of the top 100 living geniuses and co-inventor of the helium-neon laser. Makoto Kobayashi (Japan) - In 2008 Kobayshi shared the Nobel Prize inPhysics for his contribution in the discovery of the origin of broken symmetry. Philipp Lenard (Hungary) - 1905 recipient of Nobel Prize in Physics for his work with Cathode Rays. Felix Maramba (Philippines) - Built a coconut oil fuelled power generator. Holger...
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...one of the more famous, present day Jewish professionals. Born in Germany, He was the eldest of two children born to Hermann and Pauline Einstein. Mostly known for his “Theory of Relativity”, which challenged all ideas of space and time once set by Sir Isaac Newton, Albert took an early interest in science. At age five, when he was intrigued by a compass’s invisible forces, and again at age twelve, when he found a book on geometry. At sixteen, he wrote his first scientific paper titled: “The Investigation of the State of Aether in Magnetic Fields.". In which he questioned “If the light were a wave, then the light beam should appear stationary, like a frozen wave. In reality, the light beam is moving.” This paradox would dominate his thinking for the next ten years. In 1905, while working in a patent office, Einstein submitted a paper for his doctorate and had four other papers published. It was four articles that would present grant Einstein his academic recognition, and where the famous “E=mc2” equation first appeared. The physics community initially dispelled Einstein until the founder of quantum theory Max Planck, garnered his attention. Einstein’s success continued to rise equally as fast as the Nazi regime began to take power in Germany. In 1920, Hitler and the Nazi regime began to denounce Einstein’s theories as “Jewish Physics”. They gained control of the German government and prevented any Jew from holding any official position, including teaching in Universities. Despite...
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...University of Zurich * Charles University in Prague * ETH Zurich * Caltech * Prussian Academy of Sciences * Kaiser Wilhelm Institute * University of Leiden * Institute for Advanced Study | Alma mater | * ETH Zurich * University of Zurich | Thesis | Folgerungen aus den Capillaritatserscheinungen (1901) | Doctoral advisor | Alfred Kleiner | Other academic advisors | Heinrich Friedrich Weber | Notable students | * Abdul Jabbar Abdullah * Ernst G. Straus * Nathan Rosen * Leó Szilárd * Raziuddin Siddiqui[1] | Known for | * General relativity and special relativity * Photoelectric effect * Mass-energy equivalence * Theory of Brownian Motion * Einstein field equations * Bose–Einstein statistics * Bose–Einstein condensate * Bose–Einstein correlations * Unified Field Theory * EPR paradox | Notable awards | * Nobel Prize in Physics (1921) * Matteucci Medal (1921) * Copley Medal (1925)[2] * Max Planck Medal (1929) * Time Person of the Century (1999) | Spouse | Mileva Marić (1903–1919) Elsa Löwenthal (1919–1936) | Children | "Lieserl" (1902–1903?) Hans Albert (1904–1973) Eduard "Tete" (1910–1965) | Signature | Albert...
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...started building models and mechanical devices, showing deep interest in mathematics. By the age of twelve, he had learnt Euclidean geometry and studied calculus. After his father’s business failed, Einstein’s family moved to Pavia. During this time, he wrote his first scientific work, "The Investigation of the State of Aether in Magnetic Fields. Einstein did not even complete his high school and he later applied to ETH, the Swiss Federal Institute of Technology. Einstein met his future wife, Mileva Mari in 1896. She was the only woman studying mathematics at ETH. Within a few years, both of them grew loving each other and finally fell in love. In 1900, Einstein graduated with a degree in physics. During 1909, Einstein wrote another paper, this time explaining the photon...
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...d. Surface temperature drops e. Upper atmosphere heats causing ozone loss III. Fallout and its effects on the environment f. How people are exposed to fallout g. The effects of this exposure h. How long nuclear fallout last The atomic bomb is our single greatest piece of technology and also the worst piece of destruction we have ever created. It is because of the research in to nuclear weapons that we have had some of our greatest technological breakthroughs in electrical power and medicine. On the other hand, it is this research and testing that have changed our world completely and not for the better. According to Ramesh Thakur “When Manhattan project director J Robert Oppenheim first saw a nuclear explosion he quoted the bhagavad gita”Now I am become death, the shatterer of worlds”” (28). Because of all the superpowers dependence on nuclear weapons we are getting closer to seeing our worst nightmares of an all-out nuclear war becoming a reality. It is through the accident at the Chernobyl power plant and the dropping of the atomic weapons on Hiroshima and Nagasaki that gave scientist insight into the short and long term effects of nuclear war on the environment. Through research it has been determined that if enough nuclear weapons were exploded in a large scale nuclear war, it would make large areas of our planet uninhabitable and almost completely destroy our environment. First off there are...
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