National Meeting Program Schedule

2010 Summer Meeting

2011 AAPT Summer Meeting
July 30-August 3, 2011
Omaha, Nebraska

Sign In

Total Number of Records Found: 1


Add Items View Itinerary New Search


Measuring the Temperature of a Star from Its Continuous Spectrum
  Location: HC 3029
  Date: Wednesday, Aug.3
  Time: 2:10 PM -2:20 PM
  Author: John Shaw, Northwest Missouri State University
  Co-Author(s): David Richardson
  Abstract: One way to measure the surface temperature of a star is to measure the ratio of intensities of light through a blue filter compared to a green filter. Assuming the star behaves as an ideal blackbody, Planck's formula can be used to calculate the temperature at the surface of the star. A similar activity can be done in the laboratory by measuring the intensities of light from an incandescent light bulb through infrared, red, green, and blue filters. The students can use the ratio of two of these as a way of determining the temperature of the tungsten filament of the light bulb. A spreadsheet is used to illustrate the predictions of the spectra of a blackbody at different temperatures from Planck's formula.
  Footnotes: None
Select Item
2011 AAPT Winter Meeting Past Meeting Info Help Sign In

© 2018 American Association of Physics Teachers
Have questions about this site? Email the webmaster.