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.
Change management
Change management (sometimes abbreviated as CM) is a collective term for all approaches to prepare, support, and help individuals, teams, and organizations in making organizational change. 
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.
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Change management [SEP] Introduction
Change management (sometimes abbreviated as CM) is a collective term for all approaches to prepare, support, and help individuals, teams, and organizations in making organizational change. Drivers of change may include the ongoing evolution of technology, internal reviews of processes, crisis response, customer demand changes, competitive pressure, acquisitions and mergers, and organizational restructuring. It includes methods that redirect or redefine the use of resources, business process, budget allocations, or other modes of operation that significantly change a company or organization. Organizational change management (OCM) considers the full organization and what needs to change, while change management may be used solely to refer to how people and teams are affected by such organizational transition.