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Observational astronomy is a division of astronomy concerned with getting data, in contrast with theoretical astrophysics which is mainly concerned with finding out the visional implications of physical models.

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Topics: Observational Astronomy, Observational Error, Observational...

Observational errorObservational error is the difference between a measured value of quantity and its true value. There are no perfect instruments in the real world. Every scientist knows this, but as long as he can manage the observational error, research can continue.	Observational learningObservational learning or social learning refers to learning that occurs as a function of observing, retaining and replicating behaviour observed in others. It is most associated with the work of psychologist Albert Bandura, who implemented some of the se	Observational techniquesIn marketing and the social sciences, observational research (or field research) is a social research technique that involves the direct observation of phenomena in their natural setting. This differentiates it from experimental research in which a quasi-
Observational astronomyObservational astronomy is a division of astronomy concerned with getting data, in contrast with theoretical astrophysics which is mainly concerned with finding out the visional implications of physical models. Astronomy.	Observational cosmologyObservational cosmology is the study of the structure, the evolution and the origin of the universe through observation, using instruments such as telescopes and cosmic ray detectors.	Observational equivalenceTwo terms M and N are observationally equivalent if for all contexts C ] where C ''M is a valid term, C ''N is also a valid term with the same value.

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