Opacity

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Opacity

Opacity

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Important example: Hydrogen atomsE (eV)13.610.2n = n = 3Paschen continuum λ < 8207 ÅPaschen α, λ = 18756 ⊕0.0 n = 1

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The Orion nebula, a naked-eye H II region

ASTRONOMY - Uppsala Astronomical Observatory

lecture notes (Hydrodynamics, PDF)

lecture notes

Sammanfattning av seminarierna (pdf) - Uppsala universitet

Sony ICX249AL

lecture notes

Big Bang - Uppsala Astronomical Observatory - Uppsala universitet

Solsystemet: observerade egenskaper

View - Uppsala Astronomical Observatory

Important example: Hydrogen atomsE (eV)13.6n = 10.2 n = 2Balmer continuum λ < 3646 ÅBalmer α, λ = 6563 ⊕0.0 n = 1

Important example: Hydrogen atomsE (eV)13.610.2n = n = 3Paschen continuum λ < 8207 ÅPaschen α, λ = 18756 ⊕0.0 n = 1

Page 2 and 3: Q: What is the difference between
Page 4 and 5: The Einstein coefficients (Einstein
Page 6 and 7: Now, assume Thermodynamical Equilib
Page 8 and 9: The determination of cross sections
Page 10 and 11: • This suggests that we can just
Page 14 and 15: Rydberg’s formula1/λ = R Z 2 (1/
Page 16 and 17: HI, ff absorptionClassicallydα ff
Page 18 and 19: The H - absorption, cont.We get the
Page 20 and 21: Metals matter!• C, Si, Al, Mg, Fe
Page 22: The overall picture• Se plots dis