What is time delay?

Time delay refers to the difference in the time of occurrence of an event and its observation or measurement. It can be caused by various factors, such as the time taken for information to travel from its source to the observer, the inherent nature of the system being observed, or technical limitations in the measuring equipment. Time delays are common in many fields of science, engineering, and technology, including telecommunications, control systems, signal processing, and astronomy. They can have significant impacts on the accuracy, reliability, and efficiency of systems and processes, and are sometimes deliberately introduced or compensated for in order to achieve desired outcomes.