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The resonant cavity magnetron continued to evolve at the Rad Lab. A team led by I.I. Rabi first extended the operation of the magnetron from 10-cm (called S-band), to 6-cm (C-band), then to 3-cm (X-band), and eventually to 1-cm (K-band). To keep pace, all of the other radar sub-systems also were evolving continuously.
The magnetron remains the essential radio tube for shortwave radio signals of all types. It not only changed the course of the war by allowing us to develop airborne radar systems, it remains the key piece of technology that lies at the heart of your microwave oven today. The cavity magnetron's invention changed the world. [5]
Cultural-historical activity theory (CHAT) is a theoretical framework [1] to conceptualize and analyse the relationship between cognition (what people think and feel) and activity (what people do). [2] [3] [4] The theory was founded by L. S. Vygotsky [5] and Aleksei N. Leontiev, who were part of the cultural-historical school of Russian ...
From 1947 to 1974 his academic career culminated at the University of Michigan where he was Professor in the Department of Psychology and fellow at the Institute for Social Research. Here Katz cooperated with Theodore Newcomb, who founded Michigan's doctoral program in social psychology and he chaired the program from 1947 to 1953. In honor of ...
Psychology Today is an American media organization with a focus on psychology and human behavior. The publication began as a bimonthly magazine, which first appeared in 1967. The print magazine's reported circulation is 275,000 as of 2023. [ 2 ]
Mental operations are operations that affect mental contents. Initially, operations of reasoning have been the object of logic alone. Pierre Janet was one of the first to use the concept in psychology. Mental operations have been investigated at a developmental level by Jean Piaget, and from a psychometric perspective by J. P. Guilford. There ...
In McFadden's cemi field theory, as well as in Drs Fingelkurts' Brain-Mind Operational Architectonics theory, the brain's global EM field modifies the electric charges across neural membranes, and thereby influences the probability that particular neurons will fire, providing a feed-back loop that drives free will. However, in the theories of ...
Theoretical psychology is not fundamental or comprehensive theory of psychology, rather, for theoretical psychology to operate correctly it is important to supplement empirical psychology and give reason to topics and produce theories until they can be empirically verified by the other branches of psychology. [1]