and what is that?
It was the first attempt to map the large-scale structure of the universe.
CfA Redshift Survey
The Center for Astrophysics (CfA) Redshift Survey was the first attempt to map the large-scale structure of the universe. 

what is referred to as redshift? It is a phenomenon where electromagnetic radiation (such as light) from an object undergoes an increase in wavelength. whose equations are related to this mentioned radiation? UNANSWERABLE what are the fields connected to this radiation? Physics. can you mention any of the core theories of this branch of science? The theory of classical mechanics and Chaos theory. how can you differentiate between its classical and modern form? The laws of classical physics accurately describe systems whose important length scales are greater than the atomic scale and whose motions are much slower than the speed of light while modern physics is concerned with the behavior of matter and energy under extreme conditions or on a very large or very small scale. where is it applied? Geology or electrical engineering. what are the branches of this last one? broadcast engineering, electrical circuits, generators, motors, electromagnetic/electromechanical devices, electronic devices, electronic circuits, optical fibers, optoelectronic devices, computer systems, telecommunications, instrumentation, control systems, and electronics. how is business connected to it? Business Engineering deals with the relationship between professional engineering, IT systems, business administration and change management. what is meant by this last one? It is a collective term for all approaches to prepare, support, and help individuals, teams, and organizations in making organizational change. tell me any one factor behind its success? UNANSWERABLE any one challenge? Difficulties of integration. mention any one duty of the aforementioned first branch? Maintain radio towers with proper lighting and painting. what services does it provide? Effects processing and TV graphics. the actual phenomena we talked in the first; is any survey done on that? Yes, the CfA Redshift Survey.
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CfA Redshift Survey [SEP] Introduction
This initial data collection was completed by 1982. The second survey (CfA2) was started in 1985 by John Huchra and Margaret Geller and measured the redshifts of 18,000 bright galaxies in the Northern sky by 1995. Data from the second CfA survey showed that galaxies were not evenly distributed but clustered on the spherical surfaces of empty "voids". The project also made the 1989 discovery of the "Great Wall", a supercluster of galaxies surrounded by voids that surprised astronomers because its size was larger than could be produced by gravitational collapse since the beginning of the universe. Since then, superclusters have been described as artifacts of quantum fluctuations in the inflationary epoch of the universe.