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EJS Galileo Sunspots Model Download
EJS Galileo Sunspots Model
Illustrates the motion and changes in appearance of sunspots.
Last Week downloads: 0
Total downloads: 4
- Last Updated: Jun 1, 2011
- License: GPL Free
- OS: Windows XP/2000/98
- Requirements: Java Runtime Environment 5.0 or higher
- Publisher: Wolfgang Christian (77 more Applications)
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For EJS Galileo Sunspots Model Publisher's description
The simulation shows four randomly generated sunspots, and one sunspot that has a user-defined latitude (to allow the user to examine the behavior of sunspots at various latitudes). All sunspots are oval in shape. As the spots move across the Sun their appearance changes due to foreshortening and a slight tilt as the spots approaches the limb (or edge) of the solar disk. These effects come about because the Sun's surface is spherical, not flat. So the sunspot changes it orientation relative to the viewer as it moves around on the Sun's surface.
In addition to controls that allow the user to define the latitude of one of the sunspots, this model allows the user to set the obliquity of a line representing the Sun's equator. The user can adjust the obliquity of this line until the sunspots all move parallel to the line. In this case the obliquity of the line is the actual obliquity of the Sun. In addition, the model displays the elapsed time (in days) so that the user can determine the rotational period of the Sun by measuring the time required for a sunspot to complete its motion around the Sun. (Note that the period of a sunspots motion is latitude-dependent, as it is in the real Sun.) you can free download EJS Galileo Sunspots Model now.
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