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Rubidium-caesium spectroscopy, animation

K005/5337

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Credit

RHYS LEWIS, AHS, DECD, UNISA / ANIMATE4.COM / SCIENCE PHOTO LIBRARY RHYS LEWIS, AHS, DECD, UNISA / ANIMATE4.COM / SCIENCE PHOTO LIBRARY

Caption

Rubidium-caesium spectroscopy, animation. The electromagnetic radiation emitted by excited atoms and ions of a chemical element or molecule produce a characteristic spectrum. Such spectra are used to identify chemical elements, both in the laboratory and in distant stars. Here, aqueous ions of caesium (Cs+, left) and rubidium (Rb+, right) are producing characteristic purple-blue and red colours in a flame test, with the resulting emission spectra also shown. This was the method used by Bunsen and Kirchhoff to discover the elements rubidium (1861) and caesium (1860) using spectroscopy.

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Clip Properties:

  • Duration: 00:00:14.14
  • Audio: No
  • Interlaced: No
  • Capture Format: QuickTime Animation
  • Codec: Photo - JPEG

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