Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Essay on Bohr's atomic model
Essay by Neil Bohr
Essay on Bohr's atomic model
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Essay on Bohr's atomic model
Niels Bohr was a Danish scientist that was responsible for some major contributions to both physics and chemistry. Of course, like all most other scientists, Niels Bohr had some major influences in his life. Bohr made many contributions to science including two of his main contributions, his work with atomic structure and his quantum theory, along with other scientific work in the fields of chemistry and physics. Scientists are still learning about Bohr’s work today.
Neils Bohr is a very important role model to science because of all of his contributions to chemistry and physics. As a result of one of his contributions, Bohr won a Nobel Prize for his work on the structure of atoms in 1922 (“Neils Bohr- Biographical”). Other Examples of Bohr’s work include: the atomic model, the liquid droplet theory, and the quantum theory. Bohr was one of the few scientists to first observe the quantum theory. As a result of his observance of the quantum theory, he created the atomic model.
Bohr’s involvement to atomic structure was his most important piece of work. Bohr completed this theory of atomic structure in 1913 (“Niels Bohr.” Concordia). Bohr came up with this theory by using Rutherford’s idea of the atom and combining it with the quantum theory, which stated that an electron can be viewed in two different ways, either a particle or a wave (Palermo). Another name for Bohr’s atomic structure is the atomic model or the Bohr atomic model. The atomic model shows the atom as a small, positively charged nucleus surrounded by orbiting electrons (Palermo). This means that the electron does in fact orbit the nucleus but only does so in separate paths. When Bohr came up with the idea of the atomic model, he used his quantum theory a...
... middle of paper ...
...t with the quantum theory (“Niels Bohr.” Concordia). Without Bohr’s father and Ernest Rutherford, Bohr would not have accomplished all that he had done.
Niels Bohr, the Danish scientist, was responsible for some major contributions to science. Two of his main contributions were his atomic model and his quantum theory. Niels Bohr also had other contributions that were in the field of chemistry and physics. Bohr was a huge role model to science. Other fellow scientists are still learning about his scientific work today.
Works Cited
“Bohr, Niels.” Encyclopedia Britannica. 1997. Web. 15 Apr. 2014.
“Niels Bohr – Biographical.” Web. 15 Apr. 2014. Nobelprize.org. 2014.
“Niels Bohr.” Concordia College. 2014. Web. 15 Apr. 2014.
Palermo, Elizabeth. “Niels Bohr: Biography and Atomic Theory.” Live Science. Tech Media Network. 14 May 2013. Web. 15 Apr. 2014.
Benjamin Banneker was an astronomer, scientist, mathematician, surveyor, clock-maker, author, and social critic. Most notable about his accomplishments was that despite racial constraints and little formal education, he was a self-taught man. By the end of his life, his achievements were well-known around the world.
Physicist in the 1900 first started to consider the structure of atoms. The recent discovery of J. J. Thomson of the negatively charged electron implied that a neutral atom must also contain an opposite positive charge. In 1903 Thomson had suggested that the atom was a sphere of uniform positive electrification , with electrons scattered across it like plum in an pudding. (Later known as the Plum Pudding Model)
J.J. Thompson didn’t really believe that the atom was the smallest piece to matter. So he did some experiments with running current through a glass tube with the air sucked out of it. That’s what a cathode ray tube is. It has a negative charge attached to the cathode (the metal piece farthest to the side of the tube) and the positive charge attached to the anode (the metal piece closer to the center of the tube). After running current through the cathode he realized that a stream of light was projected from the end that was being charged to the opposite and showing at the inside of the tube. He wasn’t very sure what it meant at first but then he figured it out.
Although the atomic theory was developed in increments, George Johnston Stoney is most famous for contributing the term electron: fundamental unit quantity of electricity. Stoney would develop the concept fourteen years before he coined the term electron. He also made contributions to the theory of gasses, cosmic physics, and estimated the number of molecules in a cubic millimeter of gas.
and opened doors for later scientists that were in his field of organic synthesis. He was a
The amazing transformation the study of physics underwent in the two decades following the turn of the 20th century is a well-known story. Physicists, on the verge of declaring the physical world “understood”, discovered that existing theories failed to describe the behavior of the atom. In a very short time, a more fundamental theory of the ...
Niels Bohr's model of the hydrogen atom, was the primary reason for the understanding of energy levels.Bohr was able to explain the bright line spectrum of hydrogen. Sparked by the recent discovery of the diffraction patterns, scientists believed electrons could be described as waves. Bohr hypothesized that energy is being added to the hydrogen gas in the electricity form, and then leaving the gas in the form of light. He figured the light rays to be quantized, meaning only certain frequencies of the light rays can be seen. In turn, he reasoned that the hydrogen atoms themselves were quantized and, that they only can exist in certain energy levels. When the atoms absorb specific amounts of energy, they exist for a small period of time in higher energy levels. But as soon as these atoms lose their energy, they move back down to the lower levels of energy. His theory went on to state how the hydrogen atom can move up and down the energy levels, one level at a time, and can never stop in between. Every hydrogen atom is made up of a single electron - proton system. Because the negative electron is attracted to the positive proton, potential energy is created inside the atom.He figured that the farther away the electron is from the proton, the greater the potential energy is inside. In conclusion, since hydrogen atoms emit light energy in specific frequencies, the hydrogen atom must be within a specific energy level and nothing else. The different wavelengths help to determine the different colors emitted from the atom. The greater the wavelength, the faster the atom can be filled and jump to a higher level.Bohr developed his theory after studying the work of Einstein's ideas on the photons of energy.
allowed humans to see individual atoms. Binnig and Rohrer both worked as physicists for the
Benjamin Franklin, one of the most important Americans in history, did scientific work before 1790. He had a large impact on America as well as the rest of the world. Europe played a big part of his career because the influences he felt from Europe help him develop and work in science.
In 1907, Einstein used Planck’s hypothesis of quantization to explain why the temperature of a solid changed by different amounts if you put the same amount of heat into the material. Since the early 1800’s, the science of spectroscopy had shown that different elements emit and absorb specific colors of light called “spectral lines.” In 1888, Johannes Rydberg derived an equation that described the spectral lines emitted by hydrogen, though nobody could explain why the equation worked. This changed in 1913 when Danish physicist Niel Bohr applied Planck’s hypothesis of quantization to Ernest Rutherford’s 1911 “planetary” model of the atom, which affirmed that electrons orbited the nucleus the same way that planets orbit the sun. Bohr offered an explanation for why electrical attraction does not make the electrons spiral into the nucleus. He said that electrons in atoms can change their energy only by absorbing or emitting quanta. When an electron absorbs a quantum it moves quickly to orbit farther from nucleus. When an electron emits a quantum the electron jumps to a closer
Dmitri Mendeleev was one of the most famous modern-day scientists of all time who contributed greatly to the world’s fields of science, technology, and politics. He helped modernize the world and set it farther ahead into the future. Mendeleev also made studying chemistry easier, by creating a table with the elements and the atomic weights of them put in order by their properties.
Richard P. Feynman was born in 1918 in Brooklyn; in 1942 he received his Ph.D. from Princeton. Already displaying his brilliance, Feynman played an important role in the development of the atomic bomb through his work in the Manhattan Project. In 1945 he became a physics teacher at Cornell University, and in 1950 he became a professor at the California Institute of Technology. He, along with Sin-Itero and Julian Schwinger, received the Nobel Prize in Physics in 1965 for his work in the field of quantum electrodynamics.
He has significantly altered our view of the world with his Theory of Relativity. The other one is not so well known, his works are commonly associated with Einstein instead. His name is Heisenberg. He is a narrator. He worked mainly in Quantum Physics and was responsible for the development of the Principle of Uncertainty.
Stemming from the first years of the 20th century, quantum mechanics has had a monumental influence on modern science. First explored by Max Planck in the 1900s, Einstein modified and applied much of the research in this field. This begs the question, “how did Einstein contribute to the development and research of quantum mechanics?” Before studying how Einstein’s research contributed to the development of quantum mechanics, it is important to examine the origins of the science itself. Einstein took much of Planck’s experimental “quantum theory” research and applied it in usable ways to existing science. He also greatly contributed to the establishment of the base for quantum mechanics research today. Along with establishing base research in the field, Einstein’s discoveries have been modified and updated to apply to our more advanced understanding of this science today. Einstein greatly contributed to the foundation of quantum mechanics through his research, and his theories and discoveries remain relevant to science even today.
Of all the scientists to emerge from the nineteenth and twentieth centuries there is one whose name is known by almost all living people. While most of these do not understand this mans work, everyone knows that his impact on the world is astonishing.