Help


[permalink] [id link]
+
Page "Cavity magnetron" ¶ 14
from Wikipedia
Edit
Promote Demote Fragment Fix

Some Related Sentences

was and known
He knew who was riding after him -- the men he had known all his life, the men who had worked for him, sworn their loyalty to him.
But she'd known plenty of handsomer guys, and, conceding his good looks, what was there left??
For Matilda, it was the first she had known in many a night.
Even the knowledge that she was losing another boy, as a mother always does when a marriage is made, did not prevent her from having the first carefree, dreamless sleep that she had known since they dropped down the canyon and into Bear Valley, way, way back there when they were crossing those other mountains.
`` Gyp Carmer couldn't have known about Colcord's money unless he was told -- and who else would have told him ''??
When the possibility that he had not given reconsideration to so weighty a decision seemed to disconcert his questioners, Mr. Eisenhower was known to make his characteristic statement to the press that he was not going to talk about the matter any more.
Besides, Miss Henrietta -- as she was generally known since she had put up her hair with a chignon in the back -- had little time to spare them from her teaching and writing ; ;
The contents of this 195-page document would become known to many before it would become known to the man it was written about.
I had known him for some years, when I was a delegate and before, and this manner had never been his ''.
On one visit he stopped at the office of the American, where he was known surreptitiously as `` the Great White Chief '', and for the first time met his managing editor, fat Moses Koenigsberg.
It need hardly be remarked that Thompson was not generally known for his scrupulosity about keeping his social engagements, which makes his irritation in this letter all the more significant.
The internationally known sportsman and traveler Friedrich Gerstacker was typical of its detractors in the mid-thirties.
What is not so well known, however, and what is quite important for understanding the issues of this early quarrel, is the kind of attack on literature that Sidney was answering.
This was accordingly done, and the plight of the grateful Mrs. Morris was much relieved as a result of the generous loan, the amount of which is not known.
In spite of the armistice negotiated by Amadee two years earlier, the war between Bishop Guillaume of Lausanne and Louis of Savoy was still going on, and although little is known about it, that little proves that it was yet another phase of the struggle against French expansion and was closely interwoven with the larger conflict.
And with the publication of E. T. Leeds' Archaeology Of The Anglo-Saxon Settlements the student was presented with an organized synthesis of the archaeological data then known.
The malady was popularly known as the `` Spanish flu '' from the alleged locale of its origin.
He was placed in charge of athletics, and among other things adapted the type of calisthenics known as the daily dozen.
The CTCA program of activities was profuse: William Farnum and Mary Pickford on the screen, Elsie Janis and Harry Lauder on the stage, books provided by the American Library Association, full equipment for games and sports -- except that no `` bones '' were furnished for the all-time favorite pastime played on any floor and known as `` African golf ''.
In light of the scholarly reappraisals engendered by the higher criticism this is a most remarkable statement, particularly coming from one who was well known for his antifundamentalist views.

was and multi-cavity
An early multi-cavity version of the magnetron was reported by Bucharest University Professor Theodor V. Ionescu.

was and resonant
* A " Jumbo " body style is bigger again than a Grand Auditorium but similarly proportioned, and is generally designed to provide a deeper tone, similar to a dreadnought ( the body style was designed by Gibson to compete with the dreadnought ) but with maximum resonant space for greater volume and sustain.
However this introduced a new resonant mode, and a number of planes were lost before this was discovered.
The scene in which, returning to her apartment, Bardot's character is harangued in the elevator by a middle-aged cleaning lady calling her offensive names, was based on an actual incident, and is a resonant image of celebrity in the mid-20th century.
The torque was greatly enhanced by the resonant coupling of the incident light to plasmonic waves in the gold structure.
Haumea ( 2003 EL < sub > 61 </ sub >) was provisionally listed as a cubewano by the Minor Planet Center in 2006, but turned out to be resonant.
The use of only the top three strings was popular for bass soloists and Principal bassists in orchestras in the 19th century, because it reduced the pressure on the wooden top of the bass, which was thought to create a more resonant sound.
The song was made famous by Paul Robeson whose voice, deep and resonant as it was, was said by some to have attained the status of the voice of God.
A still more resonant aspect of his legacy was the uniform rewriting of Roman law, the Corpus Juris Civilis, which is still the basis of civil law in many modern states.
The ' resonant ' cavity magnetron variant of the earlier magnetron tube was invented by John Randall and Harry Boot in 1940 at the University of Birmingham, England.
The spacious, resonant interior was one of the inspirations for the music of the Venetian School.
The otherwise undesirable negative resistance was exploited to produce an extremely simple oscillator circuit only requiring connection of the plate to a resonant LC circuit to oscillate ; this was effective over a wide frequency range.
At 1998's Burning Man, a pyrophone referred to as " Satan's Calliope " was powered by ignition of propane inside resonant cavities.
An important goal in antihydrogen research was published on March 7th, 2012, where researchers on ALPHA explored the internal structure of by modifying the apparatus to use resonant microwave radiation on the magnetically trapped anti-atoms.
One of the earliest synthesizers to be employed in acid music was the Roland TB-303, which makes use of a resonant low-pass filter to emphasize the harmonics of the sound.
It was during the sessions for this single that Brian made the production decision from that point on to use doubletracking on the group's vocals, resulting in a deeper and more resonant sound.
The bug was unusual in that it had no power source or transmitter, making it much harder to detect – it was a new type of device, called a passive resonant cavity bug.
Although he was a huge success in silent films, he was unable to capitalize on one of his chief assets until the advent of the talking picture, " his beautifully modulated and cultured voice ", also described as " a bewitching, finely-modulated, resonant voice ".
) In private, Harpo actually had a much deeper and more resonant speaking voice than Groucho, which some suspect may be the real reason he was dissuaded from ever speaking in the act.

was and magnetron
The first simple, two-pole magnetron was developed in 1920 by Albert Hull at General Electric's Research Laboratories ( Schenectady, New York ), as an outgrowth of his work on the magnetic control of vacuum tubes in an attempt to work around the patents held by Lee De Forest on electrostatic control.
Hull's magnetron was not originally intended to generate VHF ( very-high-frequency ) electromagnetic waves.
Instead of abandoning the magnetron due to its frequency instability, they sampled the output signal and synchronized their receiver to whatever frequency was actually being generated.
In 1941, the problem of frequency instability was solved by coupling (" strapping ") alternate cavities within the magnetron.
The cavity magnetron was widely used during World War II in microwave radar equipment and is often credited with giving Allied radar a considerable performance advantage over German and Japanese radars, thus directly influencing the outcome of the war.
The specific heating effect of a beam of high-power microwaves was discovered accidentally in 1945, shortly after high-powered microwave radar transmitters were developed and widely disseminated by the Allies of World War II, using the British magnetron technology that was shared with the United States company, Raytheon, in order to secure production facilities to produce the magnetron.
On October 8, 1945 Raytheon filed a US patent for Spencer's microwave cooking-process, and an oven that heated food using microwave energy from a magnetron was soon placed in a Boston restaurant for testing.
The development of radar before and during World War II was a great stimulus to the evolution of high frequency transmitters in the UHF and microwave ranges, using new devices such as the magnetron and traveling wave tube.
This was called a " Trochotron ", in later form known as the " Beam-X Switch " counter tube ; another name was " magnetron beam-switching tube ", referring to their similarity to a cavity magnetron.
He was also involved in the development of the cavity magnetron, which is used in microwave radar and microwave ovens.
His assignment was to study the magnetron, which was so secret that it had to be kept in a safe.
The magnetron was developed to permit a reduction in wavelength from 150 cm to 10 cm, and then to 3 cm.
The cavity magnetron was developed at the university in the Physics Department by John Randall, Harry Boot and James Sayers.
It was at this time that the Germans also abandoned their magnetron and microwave radar development teams and programs.

0.090 seconds.