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Material characterization and analysis has been a past user for millimeter-wave sources such as klystrons and BWOs. More compact and stable solid-state sources have been replacing the limited life thermionic devices.
Backward wave oscillators (BWO) became available above 50 GHz in the late 60s and were generally used with the Alfred series of sweep generators.
The first BWOs of the year are a #16, and as the hatch progresses, duns become smaller.
BWOs appear in April and continue until late May when high water washes away the best dry-fly fishing.
There are several species of Bluewinged Olive mayflies (Baetis, BWO) that dribble out all through the season.
This was followed by a burst of activity during the second World War that included the magnetron, traveling wave tube (TWT) and the backward wave oscillator (BWO).
Immediately following the Skwala hatches are the Rhithrogena (March Browns), Ameletus, and Baetis (Bluewinged Olives, BWO) mayflies and swarms of #16 yellow craneflies.
Research is conducted in several types of organizations, including Service laboratories, such as the Army's Harry Diamond Laboratories (BWOs, TWTs and vircators), the Naval Research Laboratory (klystrons, gyrotrons, CARMs and FELs), and the Air Force Weapons Laboratory (magnetically insulated line oscillators (MILOs), split-cavity oscillators (SCOs) and vircators); industrial laboratories, such as Physics International (vircators, magnetrons, klystrons and phase locking), Varian (gyrotrons and magnetrons), Mission Research Corp.
This was followed by a burst of activity during the second World War that included the extrapolation of the magnetron, and the invention of the traveling wave tube (TWT) and the backward wave oscillator (BWO).
For a 600 GHz BWO design, an interdigital transmission line pattern was etched on a type 2A diamond structure using ion-beam assisted etching with a 2 kV Xenon beam.
Both active and reactive types of forces are present in Foucault and Deleuze: in Foucault, the plebs may be said to stand for the Deleuzean BwO; in Deleuze, the plane of stratification for the Foucauldian power-knowledge dispositif .
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