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Meaning of F region in the English dictionary

Dictionary
DICTIONARY
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PRONUNCIATION OF F REGION

F region play
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GRAMMATICAL CATEGORY OF F REGION

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F region is a noun.
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A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.
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WHAT DOES F REGION MEAN IN ENGLISH?

F region

The F region of the ionosphere is home to the F layer of ionization, also called the Appleton-Barnett layer, after the English physicist Edward Appleton and New Zealander Miles Barnett. As with other ionospheric sectors, 'layer' implies a concentration of plasma, while 'region' is the area that contains the said layer. The F region contains ionized gases at a height of around 150–800 km above sea level, placing it in the Earth’s thermosphere, a hot region in the upper atmosphere, and also in the heterosphere, where chemical composition varies with height. Generally speaking, the F region has the highest concentration of free electrons and ions anywhere in the atmosphere. It may be thought of as comprising two layers, the F1-and F2-layers. The F-region is located directly above the E region and below the protonosphere. It acts as a dependable reflector of radio signals as it is not affected by atmospheric conditions, although its ionic composition varies with the sunspot cycle. It reflects normal-incident frequencies at or below the critical frequency and partially absorbs waves of higher frequency.
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ENGLISH WORDS THAT BEGIN LIKE F REGION

F region
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These words share the same root as F region. Click on the words to load more information.

Synonyms and antonyms of F region in the English dictionary of synonyms

Synonyms
SYNONYMS
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WORDS RELATING TO «F REGION»

F region region ionosphere home layer ionization also called appleton barnett after physicist edward zealander miles with other ionospheric sectors implies concentration plasma while area that contains said science encyclopedia britannica altitudes greater than greatest most features news contacts links sections regions windows universe starts maximum extreme ultra violet radiation absorbed there urban note frequencies critical frequency approximately partially absorbs waves higher general physics extending from about kilometres merriam webster occurring kilometers more first known scientists develop model post sunset irregularities equatorial were observed terrestrial magnetism researchers booker define which forms defined yourdictionary zone within altitude containing electron temperatures theory second part behavior

Translation of «F region» into 20 languages

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TRANSLATION OF F REGION

Find out the translation of F region to 20 languages with our English multilingual translator.
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The translations of F region from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «F region» in English.
Chinese Spanish English Hindi Arabic Russian Portuguese French German Japanese Korean Vietnamese Italian Polish Ukrainian Romanian Greek Afrikaans Swedish Norwegian
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zh

Translator English - Chinese

F层
1,325 millions of speakers
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es

Translator English - Spanish

región F
550 millions of speakers
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en

Translator English - English

F region
510 millions of speakers
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hi

Translator English - Hindi

एफ क्षेत्र
380 millions of speakers
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ar

Translator English - Arabic

المنطقة F
280 millions of speakers
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ru

Translator English - Russian

F область
278 millions of speakers
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pt

Translator English - Portuguese

região F
270 millions of speakers
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fr

Translator English - French

région F
220 millions of speakers
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de

Translator English - German

F-Region
180 millions of speakers
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ja

Translator English - Japanese

F領域
130 millions of speakers
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ko

Translator English - Korean

F 영역
85 millions of speakers
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vi

Translator English - Vietnamese

F khu vực
80 millions of speakers
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it

Translator English - Italian

regione F
65 millions of speakers
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pl

Translator English - Polish

Region F
50 millions of speakers
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uk

Translator English - Ukrainian

F область
40 millions of speakers
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ro

Translator English - Romanian

regiune F
30 millions of speakers
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el

Translator English - Greek

περιοχή F
15 millions of speakers
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af

Translator English - Afrikaans

F -streek
14 millions of speakers
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sv

Translator English - Swedish

F -regionen
10 millions of speakers
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no

Translator English - Norwegian

F -regionen
5 millions of speakers
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Trends of use of F region

Trends
TRENDS
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TENDENCIES OF USE OF THE TERM «F REGION»

The term «F region» is regularly used and occupies the 95.935 position in our list of most widely used terms in the English dictionary.
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The map shown above gives the frequency of use of the term «F region» in the different countries.
Principal search tendencies and common uses of F region
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List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «F region».
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FREQUENCY OF USE OF THE TERM «F REGION» OVER TIME

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The graph expresses the annual evolution of the frequency of use of the word «F region» during the past 500 years. Its implementation is based on analysing how often the term «F region» appears in digitalised printed sources in English between the year 1500 and the present day.

Examples of use in the English literature, quotes and news about F region

Examples
EXAMPLES
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10 ENGLISH BOOKS RELATING TO «F REGION»

Discover the use of F region in the following bibliographical selection. Books relating to F region and brief extracts from same to provide context of its use in English literature.
1
The Earth's Ionosphere: Plasma Physics and Electrodynamics
The Earth's Ionosphere
autorMichael Kelly, 2012
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2
Analysis of the Day Side Equatorial Anomaly
A third mechanism that contributes or retards plasma moving away from the equatorial region along the magnetic fields is the dragging of the plasma by north -south winds at F-region altitudes. All together these processes lead to the motion of ...
autorJayaprabha Shankar, 2007
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3
Equatorial Electrojet
Of the various suggestions, the most likely is the effect of F region dynamo ( Matuura, 1947; Heelis et al, 1974; Farley et al., 1986). The F region winds drive the F region dynamo whose electric fields are short circuited in daytime but they remain ...
autorC Agodi Onwumechikli, 1998
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4
The Networking of Chaperones by Co-chaperones
The G/F Region To determine whether the G/F regions of Type I and Type II Hsp40s help specify Hsp70 functions the Craig group has carried out a number of complementation studies with Hsp40 fragments.48 In these studies, which were ...
autorGregory L. Blatch, 2010
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5
Handbook of Atmospheric Electrodynamics
Senior, C, J.R. Sharber, O. de la Beaujardiere, R.A. Heelis, D.S. Evans, J.D. Winningham, M. Sugiura, and W.R. Hoegy, E and F region study of the evening sector auroral oval: A Chatanika/Dynamics Explorer 2/NOAA 6 comparison, 7.
autorHans Volland, 1995
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ADVANCES ELECTRONC &ELECTRON PHYSICS
They have also noticed that this is a time of day when the profile of F region ionization density is varying rapidly. Recombination of electrons with ions accounts for a rapid decrease in ionization density at the lower heights. But beyond this the ...
autorLadislaus Marton, 1964
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7
Encyclopedia of the Antarctic
The F region is the most important and most complex ionospheric layer. Fast chemical reactions in the E region (mainly ion-ion recombination) lead to charge neutrality. However, the decrease in atmospheric density means fewer suitable ions ...
autorBeau Riffenburgh, 2007
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8
Atmosphere, Ocean and Climate Dynamics: An Introductory Text
One further point to consider is the effect that the current produced by a structure in the F region might have in the E region. This can be an important consideration because the relatively high collision frequencies in the E region mean that the ...
autorJohn Marshall, R. Alan Plumb, 1989
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9
Dynamics of the Upper Atmosphere
In the F region the reaction of the hydromagnetic force becomes considerable, invalidating the current and electric field distribution which are obtained without considering the interaction between the wind and electric currents. The F region ...
autorS. Kato, 1980
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10
Aeronomy of the Earth's Atmosphere and Ionosphere
The concept of a wind-driven dynamo at F-region altitudes was proposed already several decades ago by Rishbeth (1971). The first observational evidence of the generated currents was deduced from Magsat magnetic field data (Maeda et al.
autorMangalathayil Ali Abdu, Dora Pancheva, 2011
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10 NEWS ITEMS WHICH INCLUDE THE TERM «F REGION»

Find out what the national and international press are talking about and how the term F region is used in the context of the following news items.
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Man from Kansas City drowns in Osage River
This was the second drowning this year in the Highway Patrol's Troop F region which covers several counties in central Missouri. Copyright ... «KY3, May 15»
2
Funds cleared for 35cr radar at CU
... equatorial/planetary waves and ionospheric E and F region irregularities, was approved for CU a couple of years ago by the department of ... «Times of India, Mar 15»
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Why Do Radio Signals Travel Farther at Night Than in the Day?
Without as abundant a source of ionizing rays, the D and E levels (pictured right) of the ionosphere cease to be very ionized, but the F region ... «Gizmodo, Jan 15»
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Sofiane Boufal - Ligue 2's most wanted man
Eventually progressing through the ranks to play for his side's reserve squad in the F region of the CFA 2, the fifth-tier of French football, Boufal ... «Proven Quality, Dec 14»
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Wreck claims four lives
The number of deaths in the Troop F region this year is 61 as of Friday. © 2015 Daily Star-Journal. All rights reserved. This material may not be ... «The Daily Star-Journal, Oct 14»
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Auxvasse man killed in collision with school bus
Ferguson was the first fatality in the patrol's Troop F region this month and the 25th of the year. This article was published in the Friday, June 13, ... «Columbia Daily Tribune, Jun 14»
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Columbia woman dead after Route Z crash
The fatality is the seventh this month in the patrol's Troop F region and the 22nd of the year. This article was published in the Thursday, May 29, ... «Columbia Daily Tribune, May 14»
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Centralia man dies in Boone County crash
The death is the fifth during May in the patrol's Troop F region and the 20th in the region this year. This article was published in the Wednesday, ... «Columbia Daily Tribune, May 14»
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Platinum Group Metals Confirms Waterberg Deposit Expansion And …
... the Super F region in the main Waterberg Deposit. The Extension Intercepts have consistent layering, geology, metal ratios and base metals ... «Marketwired, Mar 14»
10
Mid-Missouri DWI Crashes Down, Fatalities Not
The good news is that in the Highway Patrol's Troop F region, which includes 13 counties in Mid-Missouri, DWI accidents and injuries are down ... «KOMU-TV, May 13»
APA
REFERENCE
«ENGLISH DICTIONARY. F region [online] - Edition 3.3 (Dec 2016). Available <http://englishdictionary.education/en/f-region> »
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