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SONCE

SONCE. Avtor: Natalija Novak Mentor: doc. dr. Renato Lukač Predmet: fizika Razred: 4.b. KLASIFIKACIJA. zvezda na robu Galaksije G2V; populacija I. GLAVNI PODATKI O SONCU. SESTAVA. vodik- 73,46% helij- 24,85% kisik- 0,77% ogljik- 0,29% železo- 0,16% žveplo- 0,12% neon- 0,12%

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SONCE

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  1. SONCE Avtor: Natalija Novak Mentor: doc. dr. Renato Lukač Predmet: fizika Razred: 4.b

  2. KLASIFIKACIJA • zvezda na robu Galaksije • G2V; populacija I

  3. GLAVNI PODATKI O SONCU

  4. SESTAVA • vodik- 73,46% • helij- 24,85% • kisik- 0,77% • ogljik- 0,29% • železo- 0,16% • žveplo- 0,12% • neon- 0,12% • dušik- 0,09% • silicij- 0,07% • magnezij- 0,05%

  5. ŽIVLJENJSKI CIKEL SONCA • mrzel, temen oblak plinov • protozvezda • zvezda glavne veje (fuzija H) • rdeča orjakinja (fuzija He) • planetarna meglica bela pritlikavka

  6. ZGRADBA SONCA • jedro • sevalna plast • konvekcijska plast • fotosfera • kromosfera • korona • sončeve pege • granule • prominence

  7. JEDRO • nuklearna fuzija • ravnovesje jedrskih reakcij • gama žarek vidna svetloba in nevtrini • p + p → 2H + e+ + νe • 2He + p → 3He + γ • 3He + 3He → 4He + p + p

  8. SEVALNA PLAST • ioni H in He emitirajo fotone • reabsorpcija; hiter padec gostote

  9. KONVEKCIJSKA PLAST • E se prenaša v obliki konvekcij • Rayleigh-Bérnardovecelice

  10. FOTOSFERA • vidna površina Sonca • vidna svetloba • E svobodno pobegne

  11. ATMOSFERA • KROMOSFERA - He delno ioniziran - T z višino narašča • TRANZICIJSKA PLAST - He popolnoma ioniziran - spikule, filamenti - vidna v UV spektru

  12. KORONA • Sončev veter • visoke T • CME

  13. Sončeva korona

  14. SONČEVEPEGE • nižja T • močno magnetno polje • 11-letni cikel umbra penumbra

  15. MAGNETNO POLJE • vsakih 11 let se pola zamenjata • vzrok za sončeve pege, prominence, sončev veter …

  16. SONČEV VETER

  17. SONČEV MRK Položaj Sonca, Lune in Zemlje ob Sončevem mrku Popolni Sončev mrk

  18. Diamantni prstan Kolobarjasti Sončev mrk Bailyjeve perle

  19. SONCE V RAZLIČNIH SPEKTRIH Extrem UV (30.4 nm) X-Ray (0.3 – 4.5 nm) Infrared (1083 nm) Ultraviolet (19.5 nm) Visible H-alpha (656.3 nm) Radio (1.7 cm) Visible-white light Visible-Calcium –K (393.4 nm)

  20. VIRI IN LITERATURA • http://en.wikipedia.org/wiki/Sun, 29.1.2011 • http://hu.wikipedia.org/wiki/Nap, 29.1.2011 • Heather Couper and Nigel Henbest (2009), Encyclopedia of Space, London, Dorling Kindersley Limited • http://en.wikipedia.org/wiki/Solar_eclipse, 29.1.2011 • J. Craig Wheeler (2000), Kozmikus katasztrófák, Pécs, Direkt Kft. Alexandra Kiadó • http://coolcosmos.ipac.caltech.edu/cosmic_classroom/multiwavelength_astronomy/multiwavelength_museum/sun.html, 29.1.2011 • http://chandra.harvard.edu/photo/2005/earth/earth_mag_auro_illustration_label.jpg, 29.1.2011 • http://www.windows2universe.org/sun/images/sunspots_big.jpg, 29.1.2011 • http://zebu.uoregon.edu/~imamura/122/images/solarcycle_B.jpg, 29.1.2011

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