Share to: share facebook share twitter share wa share telegram print page

Hannes Alfvén

Hannes Alfvén
Alfvén in 1942
Born
Hannes Olof Gösta Alfvén

(1908-05-30)30 May 1908
Norrköping, Sweden
Died2 April 1995(1995-04-02) (aged 86)
Danderyd, Sweden
Alma materUniversity of Uppsala
Known for
Awards
Scientific career
FieldsElectrical engineering and Plasma physics
Institutions
Doctoral advisorManne Siegbahn
Carl Wilhelm Oseen
Doctoral students

Hannes Olof Gösta Alfvén (Swedish: [alˈveːn]; 30 May 1908 – 2 April 1995[1]) was a Swedish electrical engineer, plasma physicist and winner of the 1970 Nobel Prize in Physics for his work on magnetohydrodynamics (MHD). He described the class of MHD waves now known as Alfvén waves. He was originally trained as an electrical power engineer and later moved to research and teaching in the fields of plasma physics and electrical engineering. Alfvén made many contributions to plasma physics, including theories describing the behavior of aurorae, the Van Allen radiation belts, the effect of magnetic storms on the Earth's magnetic field, the terrestrial magnetosphere, and the dynamics of plasmas in the Milky Way galaxy.

Education

Alfvén received his PhD from the University of Uppsala in 1934.[2] His thesis was titled "Investigations of High-frequency Electromagnetic Waves."

Early years

In 1934, Alfvén taught physics at both the University of Uppsala and the Nobel Institute for Physics (later renamed the Manne Siegbahn Institute of Physics[3]) in Stockholm, Sweden. In 1940, he became professor of electromagnetic theory and electrical measurements at the Royal Institute of Technology in Stockholm. In 1945, he acquired the nonappointive position of Chair of Electronics. His title was changed to Chair of Plasma Physics in 1963. From 1954 to 1955, Alfvén was a Fulbright Scholar at the University of Maryland, College Park. In 1967, after leaving Sweden and spending time in the Soviet Union, he moved to the United States. Alfvén worked in the departments of electrical engineering at both the University of California, San Diego and the University of Southern California.

Later years

In 1991, Alfvén retired as professor of electrical engineering at the University of California, San Diego and professor of plasma physics at the Royal Institute of Technology in Stockholm.

Alfvén spent his later adult life alternating between California and Sweden. He died at the age of 86.[4]

Research

In 1937, Alfvén argued that if plasma pervaded the universe, it could then carry electric currents capable of generating a galactic magnetic field.[5] After winning the Nobel Prize for his works in magnetohydrodynamics, he emphasized that:

In order to understand the phenomena in a certain plasma region, it is necessary to map not only the magnetic but also the electric field and the electric currents. Space is filled with a network of currents which transfer energy and momentum over large or very large distances. The currents often pinch to filamentary or surface currents. The latter are likely to give space, as also interstellar and intergalactic space, a cellular structure.[6]

His theoretical work on field-aligned electric currents in the aurora (based on earlier work by Kristian Birkeland) was confirmed in 1967,[7] these currents now being known as Birkeland currents.

British scientist Sydney Chapman was a strong critic of Alfvén.[8] Many physicists regarded Alfvén as espousing unorthodox opinions[9] R. H. Stuewer noting that "... he remained an embittered outsider, winning little respect from other scientists even after he received the Nobel Prize..."[10] and was often forced to publish his papers in obscure journals. Alfvén recalled:

When I describe [plasma phenomena] according to this formalism most referees do not understand what I say and turn down my papers. With the referee system which rules US science today, this means that my papers are rarely accepted by the leading US journals.[11]

Alfvén played a central role in the development of:

In 1939, Alfvén proposed the theory of magnetic storms and auroras and the theory of plasma dynamics in the Earth's magnetosphere. This was the paper rejected by the U.S. journal Terrestrial Magnetism and Atmospheric Electricity.

Applications of Alfvén's research in space science include:

Alfvén's views followed those of the founder of magnetospheric physics, Kristian Birkeland. At the end of the nineteenth century, Birkeland proposed (backed by extensive data) that electric currents flowing down along the Earth's magnetic fields into the atmosphere caused the aurora and polar magnetic disturbances.

Areas of technology benefiting from Alfvén's contributions include:

Contributions to astrophysics:

  • Galactic magnetic field (1937)
  • Identified nonthermal synchrotron radiation from astronomical sources (1950)

Alfvén waves (low frequency hydromagnetic plasma oscillations) are named in his honor, and propagate at the Alfvén speed. Many of his theories about the solar system were verified as late as the 1980s through external measurements of cometary and planetary magnetospheres. However, Alfvén himself noted that astrophysical textbooks poorly represented known plasma phenomena:

A study of how a number of the most used textbooks in astrophysics treat important concepts such as double layers, critical velocity, pinch effects, and circuits is made. It is found that students using these textbooks remain essentially ignorant of even the existence of these concepts, despite the fact that some of them have been well known for half a century (e.g, double layers, Langmuir, 1929; pinch effect, Bennet, 1934).[12]

Alfvén reported that of 17 of the most used textbooks on astrophysics, none mention the pinch effect, none mentioned critical ionization velocity, only two mentioned circuits, and three mentioned double layers.

Alfvén believed the problem with the Big Bang was that astrophysicists tried to extrapolate the origin of the universe from mathematical theories developed on the blackboard, rather than starting from known observable phenomena. He also considered the Big Bang to be a myth devised to explain creation.[13] Alfvén and colleagues proposed the Alfvén–Klein model as an alternative cosmological theory to both the Big Bang and steady state theory cosmologies.

Personal life

Alfvén was married for 67 years to his wife Kerstin (1910–1992). They raised five children, one boy and four girls. Their son became a physician, while one daughter became a writer and another a lawyer in Sweden. The writer was Inger Alfvén and is well known for her work in Sweden. The composer Hugo Alfvén was Hannes Alfvén's uncle.

Alfvén studied the history of science, oriental philosophy, and religion. On his religious views, Alfven was irreligious and critical of religion.[14][15] He spoke Swedish, English, German, French, and Russian, and some Spanish and Chinese. He expressed great concern about the difficulties of permanent high-level radioactive waste management."[16] Alfvén was also interested in problems in cosmology and all aspects of auroral physics, and used Schröder's well known book on aurora, Das Phänomen des Polarlichts.[17] Letters of Alfvén, Treder, and Schröder were published on the occasion of Treder's 70th birthday.[18][19] The relationships between Hans-Jürgen Treder, Hannes Alfvén and Wilfried Schröder were discussed in detail by Schröder in his publications.

Alfvén died on 2 April, 1995 at Djursholm aged 86.

Awards and honours

The Hannes Alfvén Prize, awarded annually by the European Physical Society for outstanding contributions in plasma physics, is named after him. The asteroid 1778 Alfvén is named in his honour.

Awards

Alfvén was one of the few scientists who was a foreign member of both the United States and Soviet Academies of Sciences.[29]

Selected bibliography

For full list of publications see.[30]

Books
  • Cosmical Electrodynamics, International Series of Monographs on Physics, Oxford: Clarendon Press, 1950. (See also 2nd Ed. 1963, co-authored with Carl-Gunne Fälthammar.)
  • Worlds-Antiworlds: Antimatter in Cosmology (1966).
  • The Great Computer: A Vision (1968) (a political-scientific satire under the pen name Olof Johannesson; publ. Gollancz, ISBN 0-575-00059-7).
  • Atom, Man, and the Universe: A Long Chain of Complications, W.H. Freeman and Company, 1969.
  • Living on the Third Planet, authored with Kerstin Alfvén, W.H. Freeman and Company, 1972. ISBN 0-7167-0340-8.
  • Cosmic Plasma, Astrophysics and Space Science Library, Vol. 82 (1981) Springer Verlag. ISBN 90-277-1151-8
  • Schröder, Wilfried, and Hans Jürgen Treder. 2007. Theoretical physics and geophysics: Recollections of Hans-Jürgen Treder (1928–2006). Potsdam: Science Editions.
Articles

See also

References

  1. ^ Walter Sullivan (April 5, 1995). "Hannes Alfven, 86, Founder Of Field in Physics, Is Dead". The New York Times.
  2. ^ "Alfvén, Hannes Olof Gosta". Who Was Who in America, 1993–1996, vol. 11. New Providence, N.J.: Marquis Who's Who. 1996. p. 4. ISBN 978-0-8379-0225-8.
  3. ^ "History". Archived from the original on 27 April 2015. Retrieved 25 May 2012.
  4. ^ Sullivan, Walter (5 April 1995). "Hannes Alfven, 86, Founder Of Field in Physics, Is Dead". New York Times.
  5. ^ Hannes Alfvén, 1937 "Cosmic Radiation as an Intra-galactic Phenomenon", Ark. f. mat., astr. o. fys. 25B, no. 29.
  6. ^ Hannes, A (1990). "Cosmology in the Plasma Universe: An Introductory Exposition". IEEE Transactions on Plasma Science. 18 (1): 5–10. Bibcode:1990ITPS...18....5P. doi:10.1109/27.45495. ISSN 0093-3813.
  7. ^ Peratt, A. L.; Peter, W.; Snell, C. M. (June 19–23, 1989). "3-dimensional particle-in-cell simulations of spiral galaxies". Proceedings of the 140th Symposium of IAU. Galactic and intergalactic magnetic fields. Heidelberg, Federal Republic of Germany: Kluwer Academic Publishers. pp. 143–150. Bibcode:1990IAUS..140..143P.
  8. ^ S. Chapman and J. Bartels, Geomagnetism," Vol. 1 and 2, Clarendon Press, Oxford, 1940.
  9. ^ Miller, DJ; Hersen M (1992). Research Fraud in the Behavioral and Biomedical Sciences. John Wiley & Sons. pp. 10. ISBN 978-0-471-52068-9.
  10. ^ Stuewer, RH (2006). "Book Reviews". Physics in Perspective. 8 (1): 104–112. Bibcode:2006PhP.....8..104S. doi:10.1007/s00016-005-0251-5.
  11. ^ Hannes Alfvén, "Memoirs of a Dissident Scientist", American Scientist, Volume 76, No 3, May–June 1988, pp. 249–251. Quoted in Joseph Paul Martino, Science Funding: Politics and Porkbarrel 1992, Transaction Publishers, ISBN 1-56000-033-3
  12. ^ Hannes Alfvén, "Double layers and circuits in astrophysics" (1986) IEEE Transactions on Plasma Science (ISSN 0093-3813), vol. PS-14, Dec. 1986, pp. 779–793.
  13. ^ Alfvén, Hannes (1984). "Cosmology—Myth or Science?". Journal of Astrophysics and Astronomy. 5 (1): 79–98. Bibcode:1984JApA....5...79A. doi:10.1007/BF02714974. S2CID 122751100.
  14. ^ "Nuclear power is uniquely unforgiving: as Swedish Nobel physicist Hannes Alfvén said, "No acts of God can be permitted."" Amory Lovins, Inside NOVA – Nuclear After Japan: Amory Lovins, pbs.org.
  15. ^ Helge Kragh (2004). Matter and Spirit in the Universe: Scientific and Religious Preludes to Modern Cosmology. OECD Publishing. p. 252. ISBN 978-1-86094-469-7. Alfven dismissed in his address religion as a "myth," and passionately criticized the big-bang theory for being dogmatic and violating basic standards of science, to be no less mythical than religion.
  16. ^ Abbotts, John (October 1979). "Radioactive waste: A technical solution?". Bulletin of the Atomic Scientists. 35 (8): 12–18. Bibcode:1979BuAtS..35h..12A. doi:10.1080/00963402.1979.11458649.
  17. ^ Schröder, Wilfried . 2000. The Aurora in time. (Das Phänomen des Polarlichts). Darmstadt: Reproduction.
  18. ^ Schröder, Wilfried, and Hans Jürgen Treder. 1998. From Newton to Einstein: A festschrift in honour of the 70th birthday of Hans-Jürgen Treder. Bremen: Rönnebeck; Arbeitskreis Geschichte der Geophysik in der Deutschen Geophysikalischen Gesellschaft.
  19. ^ Schröder, Wilfried, and Hans Jürgen Treder. 1993. The earth and the universe: A festschrift in honour of Hans-Jürgen Treder. Bremen-Rönnebeck: Science Editions.
  20. ^ Sullivan, Walter (5 April 1995). "Hannes Alfven, 86, Founder Of Field in Physics, Is Dead". New York Times.
  21. ^ Sullivan, Walter (5 April 1995). "Hannes Alfven, 86, Founder Of Field in Physics, Is Dead". New York Times.
  22. ^ Pease, R. S.; Lindqvist, S. (1998). "Hannes Olof Gosta Alfven. 30 May 1908 – 2 April 1995". Biographical Memoirs of Fellows of the Royal Society. 44: 3–19. doi:10.1098/rsbm.1998.0001. S2CID 70640855.
  23. ^ Fälthammer, C. G. (1997). "Plasma physics from laboratory to cosmos-the life and achievements of Hannes Alfven". IEEE Transactions on Plasma Science. 25 (3): 409–414. Bibcode:1997ITPS...25..409F. doi:10.1109/27.597253. S2CID 123514422.
  24. ^ European Physical Society Honors Hannes Alfvén
  25. ^ "Book of Members, 1780–2010: Chapter A" (PDF). American Academy of Arts and Sciences. Retrieved 14 April 2011.
  26. ^ Background Notes on Presidents of Pugwash
  27. ^ LIST OF NOBEL LAUREATES WHO ARE ICSD/IAS MEMBERS
  28. ^ "APS Member History".
  29. ^ "Hannes Alfven". www.nasonline.org. Retrieved 2022-08-30.
  30. ^ Full list of publications

This information is adapted from Wikipedia which is publicly available.

Read other articles:

Turkish American professor of Islamic Art Gülru NecipoğluBorn1956 (age 66–67)Istanbul, TurkeyAlma materPh.D. Harvard University, Department of Fine Arts, 1986 M.A. Harvard University, Department of Fine Arts, 1982 B.A. Wesleyan University, Connecticut, Summa Cum Laude and Honors Art History concentration, 1979SpouseCemal KafadarAwardsKing Fahd Grand Prize for Excellence of Research in Islamic Architecture (1986): PhD. diss. Best Article by a Young Author prize by the Society of…

GPIB Jemaat Immanuel MakassarGereja Protestan di Indonesia bagian BaratGPIB Immanuel MakassarLokasiJl. Balaikota No.1, Baru, Ujung Pandang Kota Makassar, Sulawesi SelatanDenominasiCalvinismeSitus webwww.gpibimmanuelmksr.wordpress.comArsitekturStatus fungsionalAktifPenetapan warisanATipe arsitekturGerejaGayaGotik KlasikSpesifikasiKapasitas500 orangAdministrasiKeuskupanMusyawarah Pelayanan (MuPel) SULSELBARA[1]KlerusPastorPdt. Zeth Yunus Laritmas, S.Ag, M.Si Cagar budaya IndonesiaGereja Im…

В Википедии есть статьи о других людях с такой фамилией, см. Виноградов; Виноградов, Владимир; Виноградов, Владимир Алексеевич. Владимир Алексеевич Виноградов Дата рождения 2 июля 1921(1921-07-02)[1] Место рождения Казань, РСФСР[1] Дата смерти 27 декабря 2017(2017-12-27) (96 лет) Место …

Valles de Benavente VdCWine regionTypeVino de CalidadCountrySpain Valles de Benavente is a Spanish geographical indication for wines referred to legally as Vino de Calidad con Indicación Geográfica. This is one step below the mainstream Denominación de Origen quality wines and one step above the less stringent Vino de la Tierra table wines on the quality ladder. It is located in the north of the province of Zamora, Castile and León region, Spain. History Grape cultivation was probably introd…

European Rugby Champions Cup 2021/22 Meister Frankreich Stade Rochelais Mannschaften 24 Länder England EnglandFrankreich FrankreichIrland IrlandSchottland SchottlandWales Wales Spiele 66 Versuche 396  (ø 6 pro Spiel) Zuschauer 843.371  (ø 12.778 pro Spiel) Meiste Punkte Irland Jonathan Sexton, Leinster Rugby (65) Meiste Versuche Irland James Lowe, Leinster Rugby (10) ← European Rugby Champions Cup 2020/21 Europe…

Town in Vermont, United StatesSharon, VermontTownBaxter Memorial LibraryLocation in Windsor County and the state of Vermont.Location of Vermont in the United StatesCoordinates: 43°46′25″N 72°26′38″W / 43.77361°N 72.44389°W / 43.77361; -72.44389CountryUnited StatesStateVermontCountyWindsorChartered1761Area • Total40.1 sq mi (103.8 km2) • Land39.6 sq mi (102.6 km2) • Water0.5 sq mi (1.2&…

Japanese manga series 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: Bokkō manga – news · newspapers · books · scholar · JSTOR (April 2012) (Learn how and when to remove this template message) BokkōThe cover of the first volume of Bokko墨攻GenreHistorical fictionCreated byKen'ichi Sakemi MangaWri…

Father of the Bride Título El padre de la noviaFicha técnicaDirección Vincente MinnelliProducción Pandro S. BermanGuion Edward Streeter (novela)Frances GoodrichAlbert Hackett (guion)Basada en Father of the Bride de Edward StreeterMúsica Adolph DeutschFotografía John AltonMontaje Ferris WebsterVestuario Walter PlunkettProtagonistas Spencer TracyJoan BennettElizabeth TaylorDon TaylorBillie BurkeLeo G. CarrollMoroni OlsenMelville CooperTaylor HolmesPaul HarveyFrank OrthRuss TamblynTom IrishMa…

Historic house in Nevada, United States United States historic placeJoseph H. Gray HouseU.S. National Register of Historic Places Show map of NevadaShow map of the United StatesLocation457 Court St., Reno, NevadaCoordinates39°31′22″N 119°49′4″W / 39.52278°N 119.81778°W / 39.52278; -119.81778Arealess than one acreBuiltc.1911Architectural styleColonial Revival, Queen AnneNRHP reference No.87001472[1]Added to NRHPNovember 20, 1987 The Josep…

1974 single by CherTrain Of ThoughtSingle by Cherfrom the album Dark Lady B-sideDixie GirlReleasedMay 1974Recorded1973–1974GenreRockLength2:33LabelMCASongwriter(s)Alan O'DayProducer(s)Snuff GarrettCher singles chronology Dark Lady (1974) Train Of Thought (1974) I Saw a Man and He Danced with His Wife (1974) Alternative coversAlternative cover Alternative coverJapanese cover Train Of Thought is the second single released by an American singer/actress Cher from her 1974 album Dark Lady. It reach…

English actor For other people named Anthony Head, see Anthony Head (disambiguation). Anthony HeadHead at the 2007 Scream AwardsBornAnthony Stewart Head (1954-02-20) 20 February 1954 (age 69)Camden Town, London, England[1]EducationSunbury Grammar SchoolAlma materLondon Academy of Music and Dramatic ArtOccupationsActorsingerYears active1977–presentPartnerSarah Fisher (1982–present)[1]Children Emily Daisy ParentHelen Shingler (mother)RelativesMurray Head (brother…

American college basketball season 2022–23 Louisiana Tech Lady Techsters basketballWNIT, First RoundConferenceConference USARecord19–13 (12–8 C-USA)Head coachBrooke Stoehr (7th season)Assistant coaches Nitra Perry Scott Stoehr Pierre Miller Home arenaThomas Assembly CenterSeasons← 2021–222023–24 → 2022–23 Conference USA women's basketball standings vte Conf Overall Team W   L   PCT W   L   PCT Middle Tennessee† 18 – 2  …

Minangkabau beralih ke halaman ini. Untuk kegunaan lain, lihat Minangkabau (disambiguasi). MinangkabauميناڠكاباوPengantin dalam balutan pakaian tradisional MinangkabauDaerah dengan populasi signifikan Indonesia (Sensus 2010)6.462.713[1][2]       Sumatera Barat4.281.439       Riau624.145       Sumatera Utara345.403       DKI Jak…

Bài viết này là một bài mồ côi vì không có bài viết khác liên kết đến nó. Vui lòng tạo liên kết đến bài này từ các bài viết liên quan; có thể thử dùng công cụ tìm liên kết. (tháng 8 năm 2020) Barbara Pike 2007 Strychnos pungens Solered. Xylotheca kraussiana Hochst. Rosalie Barbara Pike sinh ngày 29 tháng 3 năm 1933 tại Johannesburg là một nghệ sĩ thực vật Nam Phi. Tiểu sử Barbara Pike là một trong hai con gái của …

Slovenian online music magazine It's Psychedelic Baby! MagazineIt's Psychedelic Baby! Magazine header designed by Justin Jackley.Screenshot of It's Psychdelic Baby! Magazine's homepageType of siteOnline magazine, music blogAvailable inEnglishFoundedOctober 2010; 13 years ago (2010-10)HeadquartersPrebold, SloveniaCountry of originSloveniaArea servedWorldwideOwnerKlemen BreznikarFounder(s)Klemen BreznikarEditorKlemen BreznikarIndustryPsychedelic music, Progress…

Untuk orang lain dengan nama yang sama, lihat Abdul Hakim. Abdul Hakim BafagihAnggota Dewan Perwakilan Rakyat Republik IndonesiaPetahanaMulai menjabat 1 Oktober 2019PresidenJoko WidodoDaerah pemilihanJawa Timur VIII Informasi pribadiLahir23 September 1992 (umur 31)Jember, Jawa TimurPartai politik  PANAlma materUniversitas SurabayaPekerjaanPolitikusSunting kotak info • L • B Abdul Hakim Bafagih (lahir 23 September 1992) adalah politikus Indonesia yang menjabat seb…

German boy/girl pop band This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately from the article and its talk page, especially if potentially libelous.Find sources: Become One – news · newspapers · books · scholar · JSTOR (July 2013) (Learn how and when to remove this template message) Be…

American politician For the Wisconsin politician, see Fred J. Busse. Fred A. BusseTreasurer of IllinoisIn office1903–1905GovernorRichard Yates Jr.Preceded byMoses O. WilliamsonSucceeded byLen Small39th[1] Mayor of ChicagoIn officeApril 15, 1907 – April 17, 1911Preceded byEdward F. DunneSucceeded byCarter Harrison, Jr.Postmaster of ChicagoIn office1905–1907Appointed byTheodore RooseveltPreceded byFrederick E. CoyneSucceeded byDaniel A. Campbell Personal detailsBorn(1866…

British professional chamber choir Not to be confused with BBC Symphony Chorus or BBC Chorus. BBC SingersChoirBBC Singers logo (2009)Former nameThe Wireless Chorus (1924)The Wireless Singers (1927)BBC Chorus (1961)OriginLondon, United KingdomFounded1924 (99 years ago)GenreClassicalChief conductorSofi JeanninHeadquartersMaida Vale StudiosConcert hallMaida Vale StudiosAffiliationBBC PromsBBC Radio 3Associated groupsBBC Performing GroupsWebsitewww.bbc.co.uk/singers/ The BBC Singers is a professiona…

Swedish psychiatric institution (1934–1986) HospitalUmedalen HospitalSwedish: Umedalens sjukhusBuilding M36, which housed male patientsHistoryOpened1934Closed1986 Umedalen hospital (Swedish: Umedalens sjukhus) was a psychiatric hospital located in the residential area Umedalen in Umeå, Sweden.[1] Established in 1934, the hospital remained in service for 52 years, until 1986 when it was closed down. Nowadays the buildings of the former hospital have multiple functions, for example harb…

Kembali kehalaman sebelumnya

Lokasi Pengunjung: 3.17.181.3