Department of Physics and Astronomy

Dartmouth

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Solar Rotation

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Prerequisites

Lab Activities

Spacer In this lab, the students are asked to:

  • Measure the rotational velocity of the surface of the sund and teh rotational period of the sun using the motion of sunspots on its surface. The students use daily solar images from various internet sites to make their measurements.

  • Observe the Fraunhofer lines in the spectrum of sunlight, make a sketch of some of the stronger lines, construct a table of their wavelengths and identify the substances producing the lines.

  • Use the Doppler shift of the sprectal lines from reflected sunlight from Saturn and its rings to measure the rotational period of Saturn. The students use instructions in a reprinted document from "Sky and Telescope" and images of Saturn and its rings from the Internet to make their measurements.

Course Level

Introductory

Student Handouts

Equipment

Number of set-ups available:

Per lab station:

1 computer connected to the Internet
1 spectrometer
1 diffraction grating
1 rotating mirror
mirrors

Notes


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