Posted by pradee on Saturday, November 27, 2010 at 3:42am.
in pl spectrum what is the red shift and blue shift and also give the interpretaion

physics  drwls, Saturday, November 27, 2010 at 6:00am
I do not know what you mean by a "pl" spectrum
A red shift occurs when the observer and the object are moving apart. Wavelengths of spectroscopic features, such as atomic lines, are shifted to longer values when this happens.
A blue shift occurs if an observed object and the observer are moving towards each other.
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