7B11.60 - Spectral Lines/Spectroscopy - "Glo-doodler"

Code Number:
Demo Title:
Spectral Lines/Spectroscopy - "Glo-doodler"
Spectra of Various Gases, Spectral Lines of Elements
Area of Study:
Optics, Astronomy
Holographic grating, overhead slit mask, Glo-doodler.

See also 7B11.60 in Astronomy.

Set the equipment up as shown in the picture and position the Glo-doodler over the slit.  If desired, only position Glo-doodler over half of the slit so that you can see the continuous white light spectrum and the absorption spectrum at the same time.

  • "Figuring Physics", TPT, Vol. 43, # 2, Feb. 2005, p. 117.
  • Kenneth Brecher, "Do Atoms Really "Emit" Absorption Lines?", TPT, Vol. 29, # 7, July 1991, p. 454.
  • O-740:  "Fabrics & Theatrical Filters",  DICK and RAE Physics Demo Notebook.
  • Jodi and Roy McCullough, "Absorption with a Glo-Doodler", The Role of Toys in Teaching Physics, p. 4.148.
  • James C. Kernohan, "Astronomy Demonstration", PIRA News, Vol. 9. No 3, pp. 21.

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