› Forums › General Discussion › Redshift › Reply To: Redshift
21 May 2022 at 5:51 pm
#610435
Dr Andrew Smith
Participant
I think that Robin is right in advocating the operational definition of red shift as fundamental.
In reality this is what we measure and the interpretations are model dependant (cosmological, relative velocity or gravitational for example). They are often mixed together and only individually present in simple situations.
Regards Andrew