Quantum Nature of the Atom (2 Parts)

Synopsis: Two videos introducing spectral analysis and its role in the development of the model of the atom and the exploration of the universe.
Series: Physics: A World in Motion, Series
Language: English
Country: Canada
Year of production: 1997
Uses: A-level students
Subjects: Physics
Keywords: atomic emission spectra; atomic physics; quantum physics; spectra

Title: Atomic Spectra
Synopsis: Demonstrates the visible spectra of a number of gases and the analytical power of spectral analysis. Introduces Rutherford’s model of the atom and explains the significance of his scattering experiments. Shows how elements have unique line spectra and compares continuous and line absorption spectra. Demonstrates the conditions necessary to produce line emission and line absorption spectra. Shows the use of line spectra in the study of the universe and identification of substances.
Duration: 28 mins
Title: Hydrogen Spectrum, The
Synopsis: Demonstrates how to quantitatively analyse the hydrogen gas spectrum using the Rydberg equation. Introduces the idea of energy levels within the hydrogen atom. Uses the Doppler effect to show a connection between absorption spectra and the motion of galaxies. Shows how Maxwell’s theory of electromagnetism undermined the planetary model of the atom. Explains the quantum implications of line absorption and line emission spectra and shows how to use the Balmer equation in relation to wavelength and energy levels.
Duration: 28 mins

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