Esosfera

Abbozzo scienze della terra
Questa voce sull'argomento scienze della terra è solo un abbozzo.
Contribuisci a migliorarla secondo le convenzioni di Wikipedia.
Niente fonti!
Questa voce o sezione sull'argomento scienze della terra non cita le fonti necessarie o quelle presenti sono insufficienti.
Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti.
Strati dell'atmosfera
L'atmosfera terrestre vista dalla sua sommità (esosfera), sullo sfondo la Luna parzialmente illuminata dal Sole

L'esosfera terrestre è lo strato più esterno dell'atmosfera terrestre[1], a partire da circa 500 km di altezza ed estesa fino a circa 10 000 km. Le particelle gassose che raggiungono e superano la velocità di fuga (11,2 km/s), non partecipano più alla rotazione terrestre, disperdendosi nello spazio interplanetario, e in genere, sono gli elementi più leggeri (idrogeno ed elio) quelli che lasciano più frequentemente e facilmente la nostra atmosfera.

L'esosfera è caratterizzata da una temperatura di circa 700 °C, variabile a seconda dell'attività solare[2]. Ma la temperatura di centinaia di gradi alle altezze maggiori, non indica un "caldo" così enorme; si tratta solamente della temperatura cinetica e cioè, della temperatura che sarebbe necessaria al livello del mare affinché le molecole possedessero la stessa energia cinetica che hanno a queste altezze, ovvero è l'energia "posseduta" dai singoli atomi, i quali però sono molto rarefatti spazialmente; ragion per cui, pur possedendo ciascuno un'energia equivalente a centinaia di gradi, percepibili qualora a livello pressorio del suolo, la loro rarefazione non permette un identico scambio termico con il restante ambiente (es: con la tuta di un astronauta o un termometro).

Note

  1. ^ esosfera nell'Enciclopedia Treccani, su treccani.it. URL consultato il 15 luglio 2018.
  2. ^ L'atmosfera: dalla troposfera all’esosfera. URL consultato il 15 luglio 2018 (archiviato dall'url originale il 15 luglio 2018).

Voci correlate

Collegamenti esterni

Controllo di autoritàGND (DE) 4153339-2
  Portale Scienze della Terra: accedi alle voci di Wikipedia che trattano di Scienze della Terra

Read other articles:

Carl Flügge

Carl Flügge Carl Georg Friedrich Wilhelm Flügge (12 September 1847 – 10 Desember 1923) adalah seorang pakar bakteriologi dan higenitas asal Jerman. Temuannya soal patogen yang ditemukan pada percikan pernapasan menjadi dasar dari konsep percikan pernapasan sebagai jalan bagi penyebaran penyakit infeksi pernapasan. Daftar pustaka Wikimedia Commons memiliki media mengenai Karl Flügge. Lehrbuch der hygienischen Untersuchungsmethoden The Gospel of Germs: Men, Women, and the Mic...

 

العلاقات الإكوادورية الجامايكية

العلاقات الإكوادورية الجامايكية الإكوادور جامايكا   الإكوادور   جامايكا تعديل مصدري - تعديل   العلاقات الإكوادورية الجامايكية هي العلاقات الثنائية التي تجمع بين الإكوادور وجامايكا.[1][2][3][4][5] مقارنة بين البلدين هذه مقارنة عامة ومرجعية لل�...

 

Fallen Angels (Black Veil Brides song)

This article is about the Black Veil Brides song. For other songs, see Fallen Angels§Songs. 2011 single by Black Veil BridesFallen AngelsSingle by Black Veil Bridesfrom the album Set the World on Fire Released2011Recorded2011GenreGlam metalLength3:39LabelLava Music/Universal Republic RecordsSongwriter(s)Black Veil BridesProducer(s)Josh Abraham, Lucian WalkerBlack Veil Brides singles chronology Perfect Weapon (2010) Fallen Angels (2011) The Legacy (2011) Audio sampleFallen Angelsfilehelp Prof...

Mary Mohler

American swimmer Mary MohlerMohler in 2009Personal informationBirth nameMary Elizabeth DeScenzaFull nameMary Elizabeth MohlerNational team United StatesBorn (1984-09-17) September 17, 1984 (age 39)Middlesex, New Jersey, U.S.Height5 ft 10 in (178 cm)SportSportSwimmingStrokesButterfly, backstroke, freestyleClubAthens Bulldog Swim ClubCollege teamUniversity of GeorgiaCoachJack Bauerle Medal record Women's swimming Representing United States World Champions...

 

Синелобый амазон

Синелобый амазон Научная классификация Домен:ЭукариотыЦарство:ЖивотныеПодцарство:ЭуметазоиБез ранга:Двусторонне-симметричныеБез ранга:ВторичноротыеТип:ХордовыеПодтип:ПозвоночныеИнфратип:ЧелюстноротыеНадкласс:ЧетвероногиеКлада:АмниотыКлада:ЗавропсидыКласс:Пт�...

 

John Botts

American politician John Minor BottsMember of the U.S. House of Representativesfrom VirginiaIn officeMarch 4, 1847 – March 3, 1849Preceded byJames SeddonSucceeded byJames SeddonConstituency6th districtIn officeMarch 4, 1839 – March 3, 1843Preceded byJohn RobertsonSucceeded byWilliam TaylorConstituency11th districtChairman of the Committee on Military AffairsIn officeMarch 4, 1847 – March 3, 1849Preceded byHugh HaralsonSucceeded byArmistead BurtMemb...

His Master's Voice

Untuk kegunaan lain, lihat His Master's Voice (disambiguasi). Untuk retailer hiburan, lihat HMV. His Master's VoicePerusahaan indukEMI (Persemakmuran Inggris kecuali Kanada)RCA (hemisfer barat)JVC (Jepang)Didirikan1908 (1908)StatusPenggunaan terbatasGenreBeragamAsal negaraBritania Raya His Master's Voice, disingkat HMV, adalah sebuah merek dagang terkenal dalam industri rekaman dan musik dan merupakan nama tak resmi dari sebuah label rekaman Inggris besar. Nama tersebut dicanangkan pada ...

 

Baited remote underwater video

Equipment for estimating fish populations Divers inspecting a Stereo BRUV during sea trials by the South African Environmental Observation Network Stereo BRUV prototype deployed at the Tsitsikamma National Park Marine protected area Stereo BRUV prototype on trial at Rheeders' Reef, Tsitsikamma Blue shark at Bremer Marine Park Baited remote underwater video (BRUV) is a system used in marine biology research. By attracting fish into the field of view of a remotely controlled camera, the techniq...

 

List of Czech films of the 1930s

Czechcinema List of Czech films Czech Animation Pre 1920 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020svte A List of Czech films of the 1930s. Title Director Cast Genre Notes 1930 Aimless Walk Alexandr Hackenschmied Documentary Short All for Love Martin Frič Suzanne Marwille, Frantisek Klika, Jan W. Speerger Comedy C. a K. polní maršálek(Imperial and Royal Field Marshal) Karel Lamač Vlasta Burian, Theodor Pištěk and Czech actors comedy This is the first Czech soundf...

The Amazing Race 4

Season of television series Season of television series The Amazing Race 4Season 4Region 1 DVD coverPresented byPhil KeoghanNo. of teams12WinnerReichen Lehmkuhl & Chip ArndtNo. of legs13Distance traveled44,000 mi (71,000 km) No. of episodes13ReleaseOriginal networkCBSOriginal releaseMay 29 (2003-05-29) –August 21, 2003 (2003-08-21)Additional informationFilming datesJanuary 18 (2003-01-18) –February 14, 2003 (2003-02-14)Season chronology← ...

 

Ledakan populasi

Grafik populasi manusia dari 10000 SM hingga 2000 SM. Kenaikan eksponensial terjadi sejak abad ke-17. Ledakan populasi atau kelebihan penduduk adalah kondisi terlalu banyak manusia di Bumi sehingga sumber daya yang ada tidak cukup untuk memenuhi kebutuhan mereka.[1] Dengan kondisi saat ini, diperkirakan Bumi masih mampu memenuhii kebutuhan sekitar 11 miliar umat manusia.[2] Setiap tahun populasi dunia bertambah sekitar 80 juta. Sekitar setengah penduduk dunia hidup di negara d...

 

Повітряні сили Збройних сил України

Ця стаття потребує додаткових посилань на джерела для поліпшення її перевірності. Будь ласка, допоможіть удосконалити цю статтю, додавши посилання на надійні (авторитетні) джерела. Зверніться на сторінку обговорення за поясненнями та допоможіть виправити недоліки. Мат...

Students for a Free Tibet

Global network for the independence of Tibet Students for a Free TibetFounded1994TypeNon-profitHeadquarters602 East 14th Street, 2nd Floor New York, NY, USAFieldsHuman rights in Tibet, Tibetan independenceWebsitestudentsforafreetibet.org Students for a Free Tibet members protested against China in front of the White House Students for a Free Tibet Protesters marched to Lafayette Park from the Chinese Embassy in Washington D.C. Students For a Free Tibet (SFT) is a global grassroots network of ...

 

2019–20 FA Cup

For the women's event, see 2019–20 Women's FA Cup. Football tournament season 2019–20 FA CupFootball Association Challenge CupTournament detailsCountryEnglandWalesDates10 August 2019 –1 August 2020Teams735 (all)644 (qualifying competition)123 (main competition)Final positionsChampionsArsenal (14th title)Runner-upChelseaTournament statisticsMatches played156Goals scored429 (2.75 per match)Top goal scorer(s)James BallHarry McKirdy(5 goals each)(Note: All statistics do not ...

 

Black Perl

Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada Januari 2023. Black Perl adalah salah satu Puisi Perl yang terkenal. Puisi ini di poskan di Usenet pada 1 April 1990. Puisi ini ditulis dalam Perl 3 dan tidak akan bisa diurai dengan Perl 5. Beberapa pembaruan independen telah diterbitkan untuk membuatnya bisa diura...

Beaver, Pennsylvania

Borough in Pennsylvania, United StatesBeaver, PennsylvaniaBoroughThird Street (Pennsylvania Route 68) within the Beaver Historic DistrictLocation in Beaver County and the U.S. state of Pennsylvania.Coordinates: 40°41′41″N 80°18′27″W / 40.69472°N 80.30750°W / 40.69472; -80.30750CountryUnited StatesStatePennsylvaniaCountyBeaverSettled1792Incorporated1802Area[1] • Total1.12 sq mi (2.91 km2) • Land0.92 sq...

 

Mayenne (département)

Pour les articles homonymes, voir Mayenne. Mayenne Administration Pays France Région Pays de la Loire Création du département 4 mars 1790 Chef-lieu(Préfecture) Laval Sous-préfectures Château-Gontier-sur-MayenneMayenne Président duconseil départemental Olivier Richefou (UDI) Préfète Marie-Aimée Gaspari Code Insee 53 Code ISO 3166-2 FR-53 Code Eurostat NUTS-3 FR513 Démographie Gentilé Mayennais Population 305 933 hab. (2021) Densité 59 hab./km2 Géographie Coordonn...

 

Ludwig Beck

Chief of Staff of the German Army between 1935 and 1938 Ludwig BeckBeck in 1936 as GeneraloberstChief of the General Staff of the German Army High CommandIn office1 July 1935 – 31 August 1938ChancellorAdolf HitlerLeaderWerner von Fritsch as Supreme Commander of the ArmyPreceded byOffice establishedSucceeded byFranz HalderChief of the Troop OfficeIn office1 October 1933 – 1 July 1935PresidentPaul von HindenburgChancellorAdolf HitlerPreceded byWilhelm AdamSucceeded byHimse...

Franz Rogowski

Cet article est une ébauche concernant un acteur et un danseur allemand. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les conventions filmographiques. Franz RogowskiBiographieNaissance 2 février 1986 (38 ans)Fribourg-en-BrisgauNationalité allemandeActivités Danseur, acteur, chorégraphePériode d'activité Depuis 2007Autres informationsDistinctions Liste détailléePrix Neues Deutsches Kino (2013)Prix Günter-Rohrbach (2018)Prix du film allemand (...

 

Antoine Le Maistre

French translator, writer and lawyer (1608–1658) Engraving by Charles Louis Simonneau, c. 1695, after a portrait by Philippe de Champaigne Antoine Le Maistre (2 May 1608 – 4 November 1658)[1] was a French Jansenist lawyer, author and translator. His name has also been written as Lemaistre and Le Maître, and he sometimes used the pseudonym of Lamy. Background and early life Le Maistre was the son of Isaac Le Maistre, a king’s counsellor, and of Catherine Arnauld, who was t...