Doppler Shifted Wavelength of Light from Moving HI Region

Drag the yellow dot to explore the wavelength of light emmitted from an HI region and the speed at which the region is moving away from Earth. When speed = 0 the wavelength is 21 cm When speed > 0 the region is moving away from Earth and the wavelength is greater than 21 cm Whens speed < 0 the region is moving towards Earth and the wavelength is less than 21 cm

 

Wolfe Wall

 
Resource Type
Activity
Tags
astronomy  doppler  hi 
Target Group (Age)
19+
Language
English (United Kingdom)
 
 
GeoGebra version
5.0
Views
1350
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