PHYS 101 Pre-Lab #8

PHYS 101 Pre-Lab #8 - PHYS 101-20 Excitations in Atoms...

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11/7/07 PHYS 101-20 Excitations in Atoms: Spectroscopy Objective : To understand the nature of atoms when the electrons in orbit become excited, and to understand how the photons determine the wavelength of emitted light and how it can be measured using a spectrometer. In the early development of quantum mechanics, Niels Bohr proposed his representation of the atom, better known as the planetary model. Unlike those before him, Bohr made the distinction that electrons orbiting the atom were limited to a discrete energy level. He also proposed that the electrons could only change energy levels when an external source of energy was given to them, or vice versa. The energy given or emitted is in the form of light, or more specifically, a photon. The discrete spectrum of light radiation emitted has been thoroughly studied through experimentation for the past 100 years, mainly by constructing an apparatus of a gas-filled tube of glass, and then running an electric current through it, the same way
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PHYS 101 Pre-Lab #8 - PHYS 101-20 Excitations in Atoms...

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