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Daniel. This is your "boss" ...Mrs. Cooper. I do not have an associate for you to work with but you can assist ME. You and I will work on a project to explain the BOHR Model of the atom. In case you are not aware, here is my introduction to you.

My name is Michelle Cooper. I am the CEO of "Atomic Models, Inc." My associates and I work to create historical models of the atom. I have chosen our associate, Daniel, to work with me to present the Bohr Model. Our head offices are located in Venice, Italy. I look forward to reading the research Daniel completes on the Bohr Model.

Hello my name is Daniel and I am from Berlin, Germany. It has fine weather over here. It is also a great place to live in because it has great people here. The people here are also kind and generous. Berlin is also a beautiful place to live in.

In 1913 Niels Bohr came to work in the laboratory of Ernest Rutherford. Rutherford, who had a few years earlier, discovered the planetary model of the atom asked Bohr to work on it because there were some problems with the model: According to the physics of the time, Rutherford's planetary atom should have an extremely short lifetime. Bohr thought about the problem and knew of the emission spectrum of hydrogen. He quickly realized that the two problems were connected and after some thought came up with the Bohr model of the atom. The **Bohr model** of the [|hydrogen atom] ( //Z// = 1 ) or a hydrogen-like ion ( //Z// > 1 ), where the negatively charged [|electron] confined to an [|atomic shell] encircles a small positively charged [|atomic nucleus], and an electron jump between orbits is accompanied by an emitted or absorbed amount of [|electromagnetic energy] //h//ν. The orbits that the electron may travel in are shown as grey circles; their radius increases as //n//2, where //n// is the [|principal quantum number]. The transition depicted here produces the first line of the [|Balmer series], and for hydrogen ( //Z// = 1 ) results in a photon of [|wavelength] 656 nm (red). ohr's model of the atom revolutionized atomic physics.