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The cavity magnetron is a high-power vacuum tube used in early radar systems and subsequently in microwave ovens and in linear particle accelerators. A cavity magnetron generates microwaves using the interaction of a stream of electrons with a magnetic field, while moving past a series of cavity resonators, which are small, open cavities in a ...
An operational definition is designed to model or represent a concept or theoretical definition, also known as a construct.Scientists should describe the operations (procedures, actions, or processes) that define the concept with enough specificity such that other investigators can replicate their research.
The use of psychology in behavioral operations research links to the idea of judging the relationship between people's mental health and wellbeing and their behavior at work. Psychology experts often set up indicators to evaluate how an employee's surroundings, such as working environment and noise, can affect their productivity. [13]
During his four decades at UCSD, Kroll continued his research in QED, developed with Marshall Rosenbluth a theory of the free electron laser, and participated in the design of particle accelerators. In addition, he made numerous contributions to the development of UCSD as one of the nation's leading research universities and twice served as ...
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.
Theoretical Psychology also deals with manipulating non-scientific, common words (hypothetical constructs) into scientifically objective terms (intervening variables). Theoretical psychology requires full agreement on the different viewpoints to be able to see the point as a theory. As a result, many of its topics remain in continuous debate.
As with many British inventions of this period, the magnetron was provided to the US for free when they entered World War II. [4] Initially Boot and Randall were awarded £50 each for the magnetron for "improving the safety of life at sea", but in 1949 Boot, Randall and Sayers received a £36,000 prize for their work.
Crossed-field amplifier internal operation. A CFA's electric and magnetic fields are perpendicular to each other ("crossed fields"). This is the same type of field interaction used in a magnetron; as a result, the two devices share many characteristics (such as high peak power and efficiency), and they have similar physical appearances.