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Monday, 09 June 2014 11:14

N1-03: PRISMATIC SPECTRUM OF WHITE LIGHT - WATER PRISM

n1-03an1-03b

 

Additional Info

  • ID Code: N1-03
  • Purpose: Demonstrate continuous spectrum using water as the dispersing medium.
  • Description: The bright point source is used to provide a continuous white light spectrum. Light from the point source is focused by a condenser lens with iris and a 20 cm focal length cylindrical lens onto a slit. A 20 cm focal length convex lens then images the slit onto the screen through a prism consisting of an equilateral triangular plastic box filled with water. The spectrum created has less dispersion than that of a glass prism due to the smaller index of refraction of water. The spectrum of a quartz glass prism is shown at the right above for comparison.

    Before showing the demonstration, invite students to predict how the different index of refraction will change the spectrum seen.

  • Availability: Available
  • Loc codes: OM1, LS1
Read 1918 times Last modified on Wednesday, 02 September 2020 16:41
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