Help


[permalink] [id link]
+
Page "History of radio" ¶ 4
from Wikipedia
Edit
Promote Demote Fragment Fix

Some Related Sentences

field and radio
The bulb is inserted into a coil that is generating an electromagnetic radio frequency field, resulting in a low-pressure inductively coupled discharge in the lamp.
Around the same time as Daihachi Oguchi ’ s Taiko ensemble's name was spreading around Japan via radio and television broadcasts, another pioneer in the field called, Sukeroku Daiko, emerged.
Until 1950 this field was called " radio technology " because its principal application was the design and theory of radio transmitters, receivers and vacuum tubes.
From May 1934 until October 1935, Armstrong conducted the first large scale field tests of his FM radio technology from a laboratory constructed by RCA on the 85th floor of the Empire State Building.
At sixteen years, Hackman left home to join the United States Marine Corps, where he served four-and-a-half years as a field radio operator.
An MRI scanner is a device in which the patient lies within a large, powerful magnet where the magnetic field is used to align the magnetization of some atomic nuclei in the body, and radio frequency fields to systematically alter the alignment of this magnetization.
A radio frequency current is briefly turned on, producing a varying electromagnetic field.
It carried a complement of experiments to probe Venus ' atmosphere with radio waves, scan its brightness in ultraviolet light, and sample the solar particles and magnetic field fluctuations above the planet.
As electrons sweep past these openings, they induce a resonant, high-frequency radio field in the cavity, which in turn causes the electrons to bunch into groups.
He also speaks at numerous conferences and trade shows, including DEF CON, RSA Data Security Conference, on various topics in the computer security field, and has appeared on the cover of Wired Magazine, in numerous television, radio, and print articles on HavenCo and Sealand.
After field tests that lasted into 1982, Suitcase SETI was put into use in 1983 with the 26-meter Harvard / Smithsonian radio telescope at Harvard, Massachusetts.
For instance, electrons spiraling around a field line produce synchrotron radiation which is detectable in radio waves.
A radio science experiment was also performed using the NEAR tracking system to estimate the gravity field of the asteroid.
The post war era also marked the beginning of CBS's dominance in the field of radio as well.
Alternatively, the electrons can be accelerated by the oscillating electric field induced by an alternating magnetic field of a coil, which results in a self-sustaining discharge and omits any cathode ( radio frequency ion thruster ).
Mariner 5 ( Mariner Venus 1967 ) was a spacecraft of the Mariner program that carried a complement of experiments to probe Venus ' atmosphere by radio occultation, measure the hydrogen Lyman-alpha ( hard ultraviolet ) spectrum, and sample the solar particles and magnetic field fluctuations above the planet.
As now witnessed in theradio communications ” field.
In radio frequency telecommunications, field strength is the magnitude of the received electromagnetic field which will excite a receiving antenna and thereby induce a voltage at a specific frequency in order to provide an input signal to a radio receiver for such applications as cellular, broadcasting, wi-fi and a wide variety of other radio-related applications.

field and development
As one development followed another, the company's reputation for precision in the graduating field brought it broader and broader opportunities for expansion in precision manufacture.
Recently added is the Brown & Sharpe turret drilling machine which introduces the company to an entirely new field of tool development.
This has been the aim of the director of the shooting development program, the New York staff of the Sportsmen's Service Bureau, and the SAAMI shooting preserve field consultants since the start of the program in 1954.
L'Institut pour La Recherche Scientifique En Afrique Centrale ( IRSAC ) has sponsored well-designed field investigations and has cooperated closely with the government of Ruanda-Urundi in the development of its official statistics.
Once this was over, a massive development cooperation in the field of health and education brought in numerous civil personnel from Cuba.
* Tax holiday ( or tax abatement ) is used in the field of economic development to encourage businesses to relocate, expand, and more currently to retain facilities in a community
Recently, this field is rapidly progressing because of the rapid development of the computer and camera industries.
Reflecting Archaeoastronomy's development as an interdisciplinary subject, research in the field is conducted by investigators trained in a wide range of disciplines.
The development of new antipsychotics with fewer of these adverse effects and with greater relative effectiveness as compared to existing antipsychotics ( efficacy ), is an ongoing field of research.
The growing threat of biowarfare agents and bioterrorism has led to the development of specific field tools that perform on-the-spot analysis and identification of encountered suspect materials.
* Ascher Shapiro ( deceased )-Institute Professor at MIT, contributed to the development of the BME field, medical devices ( e. g. intra-aortic balloons )
In 1879, Edwin Herbert Hall working at the Johns Hopkins University discovered the development of a voltage across conductors transverse to an electric current in the conductor and magnetic field perpendicular to the current.
In The United Kingdom, Oxford University has led in providing extensive research in the field through its Community Development Journal, used worldwide by sociologists and community development practitioners.
The subsequent development of category theory was powered first by the computational needs of homological algebra, and later by the axiomatic needs of algebraic geometry, the field most resistant to being grounded in either axiomatic set theory or the Russell-Whitehead view of united foundations.
It also covers the rapidly expanding field of biotechnology through its Cartagena Protocol on Biosafety, addressing technology development and transfer, benefit-sharing and biosafety issues.
" Other, more radical critiques of development studies, have to do with the field of study itself.
A theme in the development of this field has been to duplicate the abilities of human vision by electronically perceiving and understanding an image.
Though the model comes from the field of software development, it is also used as a general model to aid in business processes generally, and has been used extensively worldwide in government offices, commerce, industry and software-development organizations.
The DSM-IV does not specifically cite its sources, but there are four volumes of " sourcebooks " intended to be APA's documentation of the guideline development process and supporting evidence, including literature reviews, data analyses and field trials.
Originally concerned with infants and children, the field has expanded to include adolescence, adult development, aging, and the entire life span.
This field examines change across a broad range of topics including motor skills and other psycho-physiological processes ; cognitive development involving areas such as problem solving, moral understanding, and conceptual understanding ; language acquisition ; social, personality, and emotional development ; and self-concept and identity formation.
Some of the main topics of the field are moral responsibility, moral development, moral character ( especially as related to virtue ethics ), altruism, psychological egoism, moral luck, and moral disagreement.
The efforts of the two did much to further electrical engineering — Tesla's work on induction motors and polyphase systems influenced the field for years to come, while Edison's work on telegraphy and his development of the stock ticker proved lucrative for his company, which ultimately became General Electric.
The capacitor is a development of the Leyden jar and is a device capable of storing charge, and thereby storing electrical energy in the resulting field.

0.235 seconds.