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Contribution of various scientists towards the development of atomic structure
The contributions to the atomic model
Scientist contribution toward atomic model
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I am the fourth of the twelve children in my family born in New Zealand on a farm. Throughout my life I have been known as Ernest Rutherford a scientist in the eyes of many. My journey started with listening to the different aspects of the atomic structure which sparked an inspiration in me. I am mostly known for the development of the atoms since I have performed a set of experiments of what the atom might look like. I have made a set of discoveries in the fields of nuclear physics and radioactivity. In order to succeed in my experiments I always say to myself, “We’ve got no money, so we’ve got to think.” It inspires me to think about how to make the world and science more advanced. In 1803 I studied the John Dalton’s model of the atom known …show more content…
Niels Bohr who is a fellow scientist disproved my model in 1912 since the rules of classical physics determined that the model was unstable. He thought that my atom might fall apart when the electrons gave off energy. In the website http://www.pbs.org/wgbh/aso/databank/entries/dp13at.html it presents, “By all rules of classical physics, it should be very unstable. For one thing, the orbiting electrons should give off energy and eventually spiral down into the nucleus, making the atom collapse. Or the electrons could be knocked out of position if a charged particle passed by.” In order to solve the disapproval of the model Bohr used other scientists ideas prove his point and find a solution for the problem. Using Planck’s quantum theory he was able to demonstrate the stability of atoms. Planck’s quantum theory demonstrates how when a black body is heated it releases thermal radiations of different wavelengths or frequency. Bohr was able to develop the ratio of the energy which electron shave plus the frequency of the orbits which was around the nucleus. This was equal to Planck’s constant as it was the light’s energy to its wave frequency. Afterwards, Bohr was able to advocate a theory which suggested that electrons existed in set orbits around the nucleus in which the shells were able to hold a certain number of electrons. As you can see, Bohr
Nikola Tesla was a Serbian American inventor, electrical engineer, mechanical engineer and physicist. He was also considered an eccentric genius and recluse. Tesla is best known for his feud with Thomas Edison over AC power Versus DC Power. He was also well known for inventing the Tesla Coil which is still used in radio technology today. Nikola Tesla was mostly forgotten until the 1990’s when there was a resurgence of interest in popular culture.
Rutherford birchard hayes was born October 4th 1822 in Delaware Ohio. he has not one but
physics. The work of Ernest Rutherford, H. G. J. Moseley, and Niels Bohr on atomic
he found the number of alpha particles emitted per second by a gram of radium.
Dr. J. Robert Oppenheimer was born in the midst of New York City to a wealthy family in 1904. He had German decent on his mother's side whose family had lived in the United States for a few generations, while his father, Julius Oppenheimer, had only recently come from Germany. His father was a farmer and a grain merchant in Germany. When he arrived at New York, He started working at Rothfeldt-Stern Company,a textile import business that was run by two of his uncles. The company changed their business to tailored suits, Julius quickly worked his way up the ranks. When Julius and Ella, Robert's mother, got married in 1903, they lived in an elegant apartment in the Upper West Side of New York City. Julius Oppenheimer was a man of art. He met Ella at a New York Exhibition for European artists. The works of famous artists livened their apartment.
Enrico Fermi’s early education and career greatly impacted the Manhattan Project in Illinois and his work helped push America and the world into the Nuclear Age. Enrico Fermi is not only the Director of the Chicago Pile-1, but of all the Chicago Pile Projects and the Argonne National Laboratory. Enrico Fermi made multiple key discoveries in Nuclear Physics, Nuclear Energy, and the Atom. With Enrico Fermi’s work of Chicago Pile-1, Enrico Fermi pushed the world into the Nuclear Age.
Wilson’s, “ Letters To A Young Scientist”, is a collection of twenty letters from the author about his career of a scientist. Edward talks about his struggles and highs of his career. The author shares his knowledge about science throughout the letters. The Author wrote these letters to motivate young adults to become scientists. He explained that no matter what happens, and what struggles they come upon, never give up and keep trying. Each letter we learn something new from the author. We learn the author's stories and emotions throughout his life. He gives his tips and tricks on how to be a good scientist. The author believes that a successful scientist isn't someone who only focuses on the math and the hard facts, a good scientist is someone with imagination and
The person who changed the history was a guy named, Michael Faraday who was an English scientist. He was the mastermind who conducted three investigations which are very interesting to us. The most important investigations to us are from the fields of electromagnetism and electrochemistry. He brought together the three lines of inquiry, matter, light and electricity which later became known as electromagnetic induction, diamagnetism electrolysis.
Difficulties with the Classical mechanics theory came right around the 19th century. First was the Ultraviolet Catastrophe. Experimental data when testing blackbody radiation was found to be inconsistent with Classical mechanics. The data showed that as the wavelength of the incoming radiation approaches zero, the amount of energy being radiated also approaches zero, whereas Classical mechanics says the emitted energy is infinite. The second difficulty with the theory was its inability to correctly describe the photoelectric effect. The photoelectric effect says that photons from a surface are released when light hits it. Classical mechanics says that electrons will be emitted from a metal by light waves with any frequency as long as the intensity of the light is strong enough, and even if it is weak over a long enough period of time electrons will eventually be emitted. The theory was proved incorrect after experiments showed that light under certain frequencies did not produce the photoelectric effect on the metal, which meant that the emitting of electrons is related not to intensity but the waves frequency.
As stated earlier, Bohr said that electrons are at a set distance from the nucleus, but this proved to be true only in the hydrogen atom. Bohr’s model of the hydrogen atom explained /observed spectral lines so well that many scientists concluded that the model could be applied to all atoms (pg.103, line 8). It was soon recognized, however, that Bohr’s approach didn’t explain the spectrum of atoms with more than one electron, nor did his theory explain the chemical behavior of atoms (pg.103, line 10). Most significantly, Bohr’s model violates the uncertainty principle because it features electrons with known orbital periods and a definite radius-two attributes which cannot be directly determined simultaneously (aps.org/physics). So basically, Bohr’s model was proved not true, because you cannot know exactly where an electron is at any given moment.
In 1899, Rutherford had hypothesized an atomic model, which he described the hydrogen atom as a small, heavy, and dense nucleus. Electrons were placed on the outside of the atom. Neils Bohr proposed his atomic model in 1913. Bohr adapted the Rutherford model by requiring that the electrons exist in different energy levels, but only certain amounts were possible. So the electrons were narrowed to definite orbits. Therefore, Bohr improved Rutherford’s atomic model by saying that electrons travelled in round orbits with specific energy levels. The Bohr’s models main principles are, “1.) The electron in a hydrogen atom travels around the nucleus in a circular orbit. 2.) The energy of the electron in an orbit is proportional to its distance from
John Dalton, an English schoolteacher and scientist, created the very first atomic model. He believed that atoms could not be divided or created nor destroyed. It was described as an indestructible sphere. However, J.J. Thomson proved his theory wrong in 1897. At t...
Over the course of history, there have been many great scientists. Ranging from Enrico Fermi to Albert Einstein, the contributions made by these men and women have dramatically changed society then, now, and forever in the future There are three characteristics which all the great scientists possess, they are all: intelligent, curious, and persistent. These scientists will all be remembered as pioneers in their respective fields because what they did has changed the world forever. The word “smart” is an understatement when it comes to the likes of Albert Einstein, Isaac Newton, Otto Hahn, and Ernest Rutherford.
The ability to answer profound questions such as the origin of mass and dominance of matter over antimatter and a keen desire to unveil the secrets of our universe motivates me to pursue a PhD and subsequently a research career in Physics. As a PhD candidate I hope to learn about the extremely appealing field of High Energy Physics and make my contribution to it.
Scientists from earlier times helped influence the discoveries that lead to the development of atomic energy. In the late 1800’s, Dalton created the Atomic Theory which explains atoms, elements and compounds (Henderson 1). This was important to the study of and understanding of atoms to future scientists. The Atomic Theory was a list of scientific laws regarding atoms and their potential abilities. Roentagen, used Dalton’s findings and discovered x-rays which could pass through solid objects (Henderson 1). Although he did not discover radiation from the x-rays, he did help lay the foundations for electromagnetic waves. Shortly after Roentagen’s findings, J.J. Thompson discovered the electron which was responsible for defining the atom’s characteristics (Henderson 2). The electron helped scientists uncover why an atom responds to reactions the way it does and how it received its “personality”. Dalton’s, Roentagen’s and Thompson’s findings helped guide other scientists to discovering the uses of atomic energy and reactions. Such applications were discovered in the early 1900’s by using Einstein’s equation, which stated that if a chain reaction occurred, cheap, reliable energy could b...