...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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...Niels Hedrik David Bohr Niels Hendrik David Bohr was one of the foremost scientists of the 20th century. The Nobel prizewinning physicist was known for his development of the theory of atomic fission that led to the development of the atomic bomb. He was born on Oct. 7, 1885, in Copenhagen, Denmark. His father, Christian, was a professor at the University of Copenhagen and his brother, Harold, was a great mathematician. Bohr and his family grew up in an atmosphere that helped the development of his knowledge. His father was largely responsible for awakening his interest in physics while, his mother came from a family well known in the field of education. After Gammelholm Grammar School in 1903, he entered Copenhagen University where He won a gold medal from the Royal Danish Academy of Sciences for his theoretical analysis of vibrations of water jets as a means of determining surface tension. He received his Master's degree from the University of Copenhagen in 1909 and his doctorate in 1911 with a thesis Studies on the electron theory of metals. Bohr went to England to study with Sir J.J. Thomson at Cambridge. He had intended to spend his entire study period in Cambridge but he did not get on well with Thomson so, after a meeting with Ernest Rutherford in Cambridge in December 1911, Bohr moved to Manchester in 1912. There he worked with Rutherford's group on the structure of the atom. Rutherford became Bohr's role model both for his personal and scientific qualities. Using quantum...
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...Jae Hyeon Park Mr. Tyc Calculus October 30, 2013 Faust in Copenhagen Faust in Copenhagen is story about seven physicists goes to small gathering of the group in Copenhagen and learn much more about themselves and their friends. In the group there were Lise Meitner, female, who is one of the high rank in field of experimentalist. Niels Bohr, Paul Dirac, Werner Heisenberg, and Wolfgang Pauli are the one of the top 10 in country’s physicists’ rank. While they may be the one of the top ten scientists they were also a professor mentored generations of future scientist. In Faust in Copenhagen they mention many of the famous physic equation such as relativity by Einstein, one of the most famous scientists in history. During the meeting in Copenhagen these talented scientist came up with Copenhagen interpretation where it was much more like relativity theory made by Einstein but it was ironed out with group of people struggling to complete the theory. On top of finishing Copenhagen interpretation Pauli, Heisenberg, Dirac, and other has created an inventions it led to implements that affect our life still to these day, activities and tools for future research. Ever since beginning of gathering all the physicists have different points of view and throughout the story the protagonists of the book will resolve around conflicts that would sometime contain love, respect, or theory that they have created. The story of Faust in Copenhagen mostly describes around six scientists who came...
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...10 Filipino and 10 foreign scientist and their contributions to science By : Meg Nina Carlyle Balamon Filipino Scientists and their contributions Magdalena C. Cantoria, Ph.D., Botany — With an extensive education in the fields of pharmacy and botany and degrees in these same fields gathered both here and in the United States, 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...
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...Early Life Niels Bohr was born on the 7th of October 1885 in Copenhagen, Denmark to a Jewish family as the middle child of 3. Bohr’s mother was from a rich Jewish banking family, and father was from a renowned physiologist, so Bohr was situated for success. Bohr attended Copenhagen University to earn his masters and doctorate in physics by 1911. Bohr traveled to Cambridge to work under scientist J.J. Thomson. In 1912, Bohr’s research theorized that atoms give off electromagnetic radiation as electrons jump to different orbit levels. Bohr’s idea deviated from Rutherford’s model, which suggested that atoms had a densely packed positive nucleus surrounded by a cloud of negative electrons; this known as the plumb pudding model. There were a few...
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...detailed, systematic information on the region's plants and animals was one of that expedition's legacies. 3. Alexander Graham Bell developed and patented the telephone and related inventions. 4. Charles Steinmetz developed new alternating-current electrical systems at General Electric Company. 5. The Serb Nikola Tesla went to the United States in 1884, where he brilliantly adapted the principle of rotating magnetic field for the construction of alternating current induction motor and the polyphase system for the generation, transmission, distribution and use of electrical power. 6. Albert Einstein developed the general theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics). 7. Niels Henrik David Bohr was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. 8. Wernher Von Braun had worked on the Aggregate rockets (the first rocket program to reach outer space), and chief designer of the V-2 rocket program. 9. Robert Fulton (November 14, 1765 – February 24, 1815) was an American engineer and inventor who is widely credited with developing a commercially successful steamboat called Clermont. 10. Samuel Finley Breese Morse (April 27, 1791 – April 2, 1872) was an...
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...Aprender a pensar Ernest Rutherford Instituto Internacional para el Desarrollo de la Innovación Académica Cambridge, 26 marzo – 3 abril de 2007 Sir Ernest Rutherford, presidente de la Sociedad Real Británica y Premio Nobel de Química en 1908, contaba la siguiente anécdota: Hace algún tiempo, recibí la llamada de un colega. Estaba a punto de poner un cero a un estudiante por la respuesta que había dado en un problema de física, pese a que éste afirmaba rotundamente que su respuesta era absolutamente acertada. Profesores y estudiantes acordaron pedir arbitraje de alguien imparcial y fui elegido yo. Leí la pregunta del examen y decía: “Demuestre cómo es posible determinar la altura de un edificio con la ayuda de un barómetro”. El estudiante había respondido: “Lleva el barómetro a la azotea del edificio y átale una cuerda muy larga. Descuélgalo hasta la base del edificio, marca y mide. La longitud de la cuerda es igual a la longitud del edificio”. Realmente, el estudiante había planteado un serio problema con la resolución del ejercicio, porque había respondido a la pregunta correcta y completamente. Por otro lado, si se le concedía la máxima puntuación, podría alterar el promedio de sus de estudios, obtener una nota más alta y así certificar su alto nivel en física; pero la respuesta no confirmaba que el estudiante tuviera ese nivel. Sugerí que se le diera al alumno otra oportunidad. Le concedí seis minutos para que me respondiera a la misma pregunta pero esta vez con la...
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...Physics pre-assessment research task 1. Describe de Broglie’s proposal that any kind of particle has both wave and particle properties De Broglie suggested that if light can behave as both a wave and as a photon, particles could also have dual character. He proposed that all particles had wave properties as well as particle properties. He proposed that the wavelength is inversely proportional to the momentum of the particle, now known as the de Broglie wavelength of a particle and given by, λ=hmv. λ= Wavelength of light (m) h= Planck’s constant 6.626 x 10^-34 (J) m= Mass of the particle (kg) V= Speed of the particle (light) mv= Momentum of particle (kg m/s) 2. Define wave diffraction and interference Diffraction-is the bending of waves as they pass around the corner of a barrier or as they move through obstacles such as a slit. Wave interference is the phenomenon that occurs when two waves meet while traveling along the same medium. The interference of waves causes the medium to take on a shape that results from the net effect of the two individual waves upon the particles of the medium. Destructive interference is a type of interference that occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction. For instance, when a sine pulse with a maximum displacement of +1 unit meets a sine pulse with a maximum displacement of -1 unit, destructive interference occurs. This is depicted in the diagram below...
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...Munich and studied theoretical physics. After he graduated, he taught math and physics briefly. Planck completed his habilitation thesis and began lecturing in Munich without getting paid becuase he was waiting to be offered a new postion. He also furthered his work on the field of heat theory. Planck then became a professor at Berlin University and joined the Physical Society. As far as Plancks home life goes, he married and had four children. He was friends with theologian Adolf con Harnack and his home soon because a social center. Famous scientists like Albert Einstein and Otto Hahn all frequently visited. His wife died and he remaired and had his third son. Planck's two sons and two daughters all died. By the end of the 1920s, Bohr, Heisenberg, and Pauli had worked out the interpretation of quantum mechanics, but Planck rejected it. He expected that wave mechanics would render the quantum theory, even though this can not be the case. Further work only cemented quantum theory, even against Einstein's revulsions. He originated quantum theory, which won him the Nobel Prize in Physics in 1918. Max Planck made many contributions to theoretical physics, and is very famous for being the originator of quantum theory. He ended his life at Göttingen on October 4, 1947, but he has contributed so much for the...
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... 23 | HW Due | Ch. 4a Homework 1. Reading notes on Chapter 4. 2. Practice Problems: 11-17, pp. 99-104. | Tests/Quizzes | Quiz: Dalton’s Atomic Theory (see page 89) | Topic in Class | Structure of the Atom | Lab | Very Small Particles, Part I (pp. 108-109) | Thursday, Sept. 24 & Friday, Sept. 25 | HW Due | Ch. 4b Hw 1. Problems 59-69, p. 113. | Tests/Quizzes | None | Topic in Class | Radioactive Decay, Light Particles and Waves | Lab | Very Small Particles, Part II (pp. 108-109) | Tuesday, Sept. 29 & Wednesday, Sept. 30 | HW Due | Ch. 5a Hw 1. Chapter 5 Notes. 2. Practice Problems: 1-6, pp. 121-124; 18-23, pp. 139-141. | Tests/Quizzes | Quiz: Atomic Structure | Topic in Class | The Bohr Model, Electron Configuration | Lab | None | Thursday, Oct. 1 & Friday, Oct. 2 | HW Due | Ch. 5b Hw 1. Problems 65-82, p. 147. | Tests/Quizzes | None | Topic in Class | Test Review | Lab | TBA | Tuesday, Oct. 6 & Wednesday, Oct. 7 | HW Due | Test Review 1. Complete Study Guide. | Tests/Quizzes | Test One | Topic in Class | None | Lab | None | Thursday, Oct. 8 & Friday, Oct. 9 | HW Due | Ch. 6a Hw 1. Chapter Six Notes. 2. Practice Problems: 6-9, p. 162; 16-18, p. 165. | Tests/Quizzes | None | Topic in Class | Periodic Table | Lab | TBA | Tuesday, Oct. 13 & Wednesday, Oct. 14 | HW Due | Ch. 7a Hw 1. Chapter Seven Notes. 2. Periodic Table Handout. | Tests/Quizzes...
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...Pontificia Universidad Católica de Puerto Rico Extensión Coamo Teoría Atómica María Isabel Rodríguez Goncalves A00214885 CHEM 117 – Prof. Correa Introducción Cada sustancia del universo, están enteramente formada por pequeñas partículas llamadas átomos. Son tan pequeñas que no es posible tirarle una foto. Estas pequeñas partículas son estudiadas por la química, ciencia que surgió en la edad media y que estudia la materia. Para comprender estos átomos a lo largo de la historia diferentes científicos han enunciado una serie de teorías que nos ayudan a comprender la complejidad de estas partículas. Estas teorías significan el asentamiento de la química moderna. Ya se conocía el átomo pero no del todo. Posteriormente a fines del siglo XVIII se descubren un gran número de elementos, pero este no es el avance más notable. Ya en el siglo XIX se establecen diferentes leyes de la combinación y con la clasificación periódica de los elementos (1871). Actualmente su objetivo es cooperar a la interpretación de la composición, propiedades, estructura y transformaciones del universo, pero para hacer todo esto hemos de empezar de lo más simple y eso son los átomos, que hoy conocemos gracias a esas teorías enunciadas a lo largo de la historia. Estas teorías que tanto significan para la química es lo que vamos a estudiar en las próximas hojas de este trabajo. ¿Qué es una teoría? Es una explicación basada en las observaciones y experimentos. La misma no es final, no es única y puede cambiar...
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...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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...THOMPSON, RUTHERFORD, AND BOHR Three scientists of the late 1800’s and early 1900’s help us with discovering what we know today about the atom. These three scientists are JJ Thompson, Ernest Rutherford, and Niels Bohr. They used and created models of the atom and ideas we still use today. JJ Thompson used the cathode ray and its electric currents for his experiments. Above the tube, he placed one positively charged plate and one negatively charged one. He found that the ray bent in the direction of the positive plate instead of straight down the tube. He found that the particles in the cathode ray must be negative because opposite charges attract. He named the negative charges electrons. Using the cathode ray, Thompson also discovered the mass of an electron is smaller than the mass of an atom. Also that the atom is NOT indivisible, proving Dalton wrong. And he proposed since there is a negative charge in the atom, there must be a positive one to balance the neutral atom out. The previous model of the atom was a solid, neutral sphere with the same matter all throughout, but, with Thompson’s new findings he created a new model. His new model of the atom was a positively charged sphere with both positive and negative charges and electrons all mixed through. His findings created Thompson’s model of the atom. Ernest Rutherford, one of Thompson’s students, worked off Thompson’s model and idea to help understand the atom, and in the future teach his own students. Two of...
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...While he worked on the project, he went by the name of Nicholas Baker for security reasons (“Niels Bohr – The Manhattan Project”). He did not stay at Los Alamos, but visited it from time to time. Robert Oppenheimer said that Bohr acted "as a scientific father figure to the younger men” (Pais) and Bohr stated, "They didn't need my help in making the atom bomb" (Pais). Oppenheimer credited Bohr for being a vital role to the work on modulated neutron initiators involved in the project. Bohr wanted to share the Manhattan Project with the world, but his idea was...
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...are the words of Democritus, one of the founding fathers of the ancient atomic theory, on his philosophical viewpoint on the nature of matter. It began as a philosophical concept in ancient Greece and India, but today, the atomic theory is not mere philosophy, but a scientific concept or model of the fundamental nature of matter. How it went from a philosophical belief called atomism to an empirically-proven, well-studied, scientific concept is what I’m going to explain throughout this essay; focusing on two renowned scientists of the early 20th century, Ernest Rutherford and Niels Bohr, who made significant contributions to this growing theory of the atom and its structure (the composition of the atom). The Atom before Bohr and Rutherford The modern model of the atom was built upon the many vital discoveries of the major scientists throughout history since the birth of the theory in ancient Greece. Bohr and Rutherford were able to make the discoveries and scientific conclusions they made because they were “standing on the shoulders of giants.” To begin with, Democritus, although not entirely correct, laid a philosophical foundation for the scientists-to-come on the fundamental nature of matter. Fast forward to two thousand years later, in 1803, John Dalton publishes the first evidence-based theory of the atom in a set of five principles about the atom, coining it as the atomic theory. Although having a few critical mistakes, he further developed Democritus’ plain philosophy...
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