Louis G. Henyey

Louis George Henyey (February 3, 1910 – February 18, 1970) was an American astronomer.

His parents, Albert and Mary Henyey, were immigrants from Hungary. Louis George Henyey married Elizabeth Rose Belak, born in Budapest, on April 28, 1934; they had three children: Thomas Louis, Francis Stephen, and Elizabeth Maryrose.

His undergrad (1932) and masters (1933) were from the Case School of Applied Science.^[1] In Yerkes Observatory of the University of Chicago he earned his doctorate in 1937, with a mathematical thesis on the topic of reflection nebulae. In 1947 he accepted a position as assistant professor in the Department of Astronomy at the University of California, Berkeley, and in 1954 he was promoted to professor. At Berkeley he became head of his own research group in the field of stellar evolution and supervised and collaborated with numerous graduate students, postdoctoral fellows, and scientific visitors. He died unexpectedly of a cerebral hemorrhage on February 18, 1970.

He is best known for his two major scientific contributions in the field of stellar structure and evolution. First, he developed a method for automatic solution of the equations of stellar evolution, suitable for electronic computers and applicable to a wide range of physical conditions and phases in the lifetime of a star. Second, he made new calculation of the evolution of stars during their early history when gravitational contraction provides the main energy source, and during the transition phase when nuclear energy takes over from the gravitational source. His work on the diffusion of the light in galaxies resulted in what is referred to as the Henyey-Greenstein phase function,^[2]^[3] first proposed in a paper he authored.^[4] This scattering model has found use in other scientific disciplines.^[5]

The crater Henyey on the Moon is named after him, as is the asteroid called 1365 Henyey.^[6]

References

^ Hockey, Thomas (2014). The Biographical Encyclopedia of Astronomers. Springer Publishing. ISBN 978-1-4419-9916-0. Retrieved August 22, 2012.
^ "The Henyey-Greenstein scattering function". Archived from the original on 2014-11-02.
^ "The Henyey-Greenstein phase function" (PDF).
^ Henyey, L. C.; Greenstein, J. L. (1941). "Diffuse radiation in the Galaxy". The Astrophysical Journal. 93: 70. Bibcode:1941ApJ....93...70H. doi:10.1086/144246.
^ "Scattering: The Henyey-Greenstein phase function".
^ "Discovery Circumstances: Numbered Minor Planets (1)-(5000)". IAU: Minor Planet Center. Archived from the original on 9 April 2010. Retrieved March 7, 2010.

External links

http://www.nap.edu/readingroom/books/biomems/lhenyey.html

This United States astronomer article is a stub. You can help Wikipedia by expanding it.

Read other articles:

KFLP-FM

For the AM radio station in Floydada, Texas, United States, see KFLP (AM). Radio station in Floydada, TexasKFLP-FMFloydada, TexasBroadcast areaLubbockFrequency106.1 MHzProgrammingFormatTexas CountryOwnershipOwnerParamount Broadcasting Corp.(Anthony L. Ricketts)Sister stationsKFLP-AMHistoryFirst air dateApril 13, 1983Former call signsKLLP (1984-1985)KKAP-FM (1985-1992)KFLL (1992-2001)Call sign meaningFloydada, Lubbock (or Lockney) and PlainviewTechnical informationFacility ID57025ClassC3ERP25,...

Douglas O-46

Artikel ini perlu diwikifikasi agar memenuhi standar kualitas Wikipedia. Anda dapat memberikan bantuan berupa penambahan pranala dalam, atau dengan merapikan tata letak dari artikel ini. Untuk keterangan lebih lanjut, klik [tampil] di bagian kanan. Mengganti markah HTML dengan markah wiki bila dimungkinkan. Tambahkan pranala wiki. Bila dirasa perlu, buatlah pautan ke artikel wiki lainnya dengan cara menambahkan [[ dan ]] pada kata yang bersangkutan (lihat WP:LINK untuk keterangan lebih lanjut...

Géza Toldi

Hungarian footballer The native form of this personal name is Toldi Géza. This article uses Western name order when mentioning individuals. Géza Toldi Geza in 1928Personal informationDate of birth (1909-02-11)11 February 1909Place of birth Budapest, Austria-HungaryDate of death 16 August 1985(1985-08-16) (aged 76)Place of death Budapest, HungaryPosition(s) StrikerSenior career*Years Team Apps (Gls)1927–1939 Ferencvárosi TC 214 (203)1939–1941 Gamma FC 36 (22)1941–1942 Szegedi...

Lukas 18

Lukas 18Injil Lukas 18:37-42a pada Codex Borgianus (facsimile), yang ditulis sekitar abad ke-5 M.KitabInjil LukasKategoriInjilBagian Alkitab KristenPerjanjian BaruUrutan dalamKitab Kristen3← pasal 17 pasal 19 → Lukas 18 (disingkat Luk 18) adalah pasal kedelapan belas Injil Lukas pada Perjanjian Baru dalam Alkitab Kristen. Disusun oleh Lukas, seorang Kristen yang merupakan teman seperjalanan Rasul Paulus.[1][2] Teks Naskah aslinya ditulis dalam bahasa Yunani. Sejuml...

Secret Affair

Secret AffairPoster promosi untuk Secret AffairGenreRomansa MelodramaDitulis olehJung Sung-jooSutradaraAhn Pan-seokPemeranKim Hee-ae Yoo Ah-inNegara asalKorea SelatanBahasa asliKoreaJmlh. episode16ProduksiProduser eksekutifPark Joon-seoProduserKim Eui-seokLokasi produksiKoreaDurasiSenin dan Selasa pukul 21:50 (WSK)Rumah produksiFuture 1 DramahouseRilis asliJaringanjTBCRilis17 Maret (2014-03-17) –13 Mei 2014 (2014-5-13) Secret Affair (Hangul: 밀회; RR: ...

WJFN-FM

News/talk radio station in Goochland, Virginia For other uses, see WJFN. WJFN-FMGoochland, VirginiaBroadcast areaGoochland, VirginiaGoochland County, VirginiaFrequency100.5 MHzBrandingNewstalk WJFNProgrammingFormatConservative talkAffiliationsGenesis Communications NetworkTownhall NewsWestwood OnePittsburgh SteelersWest Virginia MountaineersOwnershipOwnerJohn Fredericks(MAGA Radio Network, LLC)Sister stationsWJFNHistoryFirst air date2001Former call signsWZEZ (2000–2017)WLRB (2017–2018)WVN...

Fanfare Ciocărlia

Romanian Balkan brass band This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Fanfare Ciocărlia – news · newspapers · books · scholar · JSTOR (April 2018) (Learn how and when to remove this message) Fanfare CiocărliaFanfare Ciocărlia in 2017Background informationOriginZece Prăjini, Iași County, RomaniaGenr...

Bordj Badji Mokhtar

Pour les articles homonymes, voir BBM. Cet article est une ébauche concernant une localité algérienne. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Bordj Badji Mokhtar Vue de Bordj Badji Mokhtar en 1990 Noms Nom arabe algérien برج باجى مختار Nom amazigh ⴱⵓⵔⴵ ⴱⴰⴵⵉ ⵎⵓⵅⵜⴰⵔ Administration Pays Algérie Wilaya Bordj Badji Mokhtar Code postal 01010 Code ONS 0125 Indicatif...

Asfar ibn Shiruya

Asfar ibn Shiruya (Gilaki/Persian: اسفار بن شیرویه: died 931) was an Iranian military leader of Gilaki origin, active in northern Iran (esp. Tabaristan and Jibal) in the early 10th century. He played a major role in the succession disputes of the Alids of Tabaristan, and managed to establish himself as the ruler of Tabaristan and northern Jibal briefly from 928 to 930. Name Asfār is a local Caspian form of Middle Persian aswār, which means rider, cavalryman. The New Persian for...

大字 (数字)

この項目には、一部のコンピュータや閲覧ソフトで表示できない文字が含まれています（詳細）。数字の大字（だいじ）は、漢数字の一種。通常用いる単純な字形の漢数字（小字）の代わりに同じ音の別の漢字を用いるものである。概要壱万円日本銀行券（「壱」が大字）弐千円日本銀行券（「弐」が大字）漢数字には「一」「二」「三」と続く小字と、「壱」「�...

Madurantakam railway station

Railway station in Tamil Nadu, India This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article may rely excessively on sources too closely associated with the subject, potentially preventing the article from being verifiable and neutral. Please help improve it by replacing them with more appropriate citations to reliable, independent, third-party sources. (February 2019) (Learn how and...

Puntland

Republik Puntland adalah sebuah sebuah negara pengakuan terbatas di bagian timur laut Somalia yang tidak diakui oleh siapapun. Nama Puntland diambil dari Negeri Punt, kini mencakupi wilayah Somalia, yang berasal dari narasumber pada zaman Mesir kuno. Republik PuntlandJamhuuriyadda Putland Bendera Lambang Semboyan: Nabad iyo nolol(Indonesia: Kedamaian dan kehidupan)Lagu kebangsaan: Qolobaa Calankeed (Indonesia: Memuji Tanah Air) Ibu kotaGarooweBahasa resmiSomali, Arab, InggrisAgama ...

كلية طب الأسنان (الجامعة الأردنية)

لمعانٍ أخرى، طالع كلية طب الأسنان (توضيح). كلية طب الأسنان شعار كلية طب الأسنان (الجامعة الأردنية)شعار الكلية مبنى كلية طب الأسنان من الجهة الشرقية. الشعار تطوير الرعاية الصحية السنية من خلال تدريب أطباء أسنان متميزين، وإجراء بحوث علمية ذات جودة عالية.[1] معلومات �...

Criminal tattoo

Tattoos associated with criminal activity and gang membership Not to be confused with Prison tattooing. This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Criminal tattoo – news ...

Pelham Bay Park

Large public park in the Bronx, New York Pelham Bay ParkNorthern tip of Hunter Island in Pelham Bay ParkTypeMunicipalLocationThe Bronx, New York, USCoordinates40°51′56″N 73°48′30″W / 40.86556°N 73.80833°W / 40.86556; -73.80833Area2,772 acres (1,122 ha)[a]Created1888Operated byNew York City Department of Parks and RecreationPublic transit accessSubway: Pelham Bay Park ()MTA New York City Bus: Bx29Bee-Line Bus: 45 Pelham Bay Park is a...

Danh sách nhà vô địch bóng đá Anh

Vô địch Anh (hạng cao nhất) Football League (1888–1892)Football League First Division (1892–1992)Ngoại hạng Anh (1992–nay) Quốc gia Anh Thành lập 1888 Số đội tranh tài 20 (kể từ mùa giải 1995–96) Đương kim vô địch Manchester City (2023–24) Đội thành công nhất Manchester United(20 chức vô địch) Leicester City ăn mừng chức vô địch Ngoại hạng Anh mùa giải 2015–16 Các nhà vô địch bóng đá Anh là những ...

اصطناع كيميائي

عالم كيمياء أو مهني متخصص يضيف كمية محددة من مادة كيميائية لصنع مركب معين - مكون دواء في هذه الحالة. الاصطناع[1] أو التخليق الكيميائي (بالإنجليزية: Chemical synthesis)‏ مصطلح يطلق على عملية تصنيع مادة كيميائية ما اعتبارا من مركبات كيميائية أولية غاية في البساطة، تتضمن العملية اس...

List of districts of Jammu and Kashmir

Districts of Jammu and Kashmir The Indian union territory of Jammu and Kashmir consists of two divisions: Jammu Division and Kashmir Division, and is further divided into 20 districts:[1] History Princely state of Jammu and Kashmir Main article: Jammu and Kashmir (princely state) Prior to 1947, Kashmir was a princely state under the paramountcy of the British Indian Empire. The central part of the princely state was administratively divided into the provinces Jammu and Kashmir. In ad...

Raoult's law

Law of thermodynamics for vapour pressure of a mixture Raoult's law (/ˈrɑːuːlz/ law) is a relation of physical chemistry, with implications in thermodynamics. Proposed by French chemist François-Marie Raoult in 1887,[1][2] it states that the partial pressure of each component of an ideal mixture of liquids is equal to the vapor pressure of the pure component (liquid or solid) multiplied by its mole fraction in the mixture. In consequence, the relative lowering of vapor pr...

1892 United States presidential election in Pennsylvania

Election in Pennsylvania Main article: 1892 United States presidential election 1892 United States presidential election in Pennsylvania ← 1888 November 8, 1892 1896 → Nominee Benjamin Harrison Grover Cleveland Party Republican Democratic Home state Indiana New York Running mate Whitelaw Reid Adlai Stevenson Electoral vote 32 0 Popular vote 516,011 452,264 Percentage 51.45% 45.09% County Results Harrison 40-50% 50-60% &#...