Definitions for f region

This page provides all possible meanings and translations of the word f region

Princeton's WordNet

  1. Appleton layer, F layer, F region(noun)

    the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission

Freebase

  1. F region

    The F region of the ionosphere is home to the F layer of ionization, also called the Appleton layer, after the English physicist Edward Appleton. 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. The F region is the region of the ionosphere which is very important for HF radio wave propagation. This F region is very anomalous in nature.

Numerology

  1. Chaldean Numerology

    The numerical value of f region in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of f region in Pythagorean Numerology is: 2

Sample Sentences & Example Usage

  1. Eric Meyers of the association:

    It is a crisis in the region.

  2. Scott Stewart:

    The region is awash in weapons.

  3. Tokuo Hayakawa:

    This region will definitely go extinct.

  4. Michael Wilkens:

    The whole region is used to being lifted by this company.

  5. Defense Minister Marise Payne:

    We always navigate in a very constructive way in the region.

Images & Illustrations of f region

Translation

Find a translation for the f region definition in other languages:

Select another language:

Discuss these f region definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Citation

Use the citation below to add this definition to your bibliography:

Style:MLAChicagoAPA

"f region." Definitions.net. STANDS4 LLC, 2016. Web. 25 May 2016. <http://www.definitions.net/definition/f region>.

Are we missing a good definition for f region? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for f region:

Thanks for your vote! We truly appreciate your support.