1 / 21

Physics of the Cosmos

Physics of the Cosmos. Secs 37.1-37.3. Reminders. Lab B2 - WNL Wave Natur e of Light due Friday @ 4 In-class Quiz # 6 Tuesday , April 22 Quiz #6 will address chapters 29 and 37 Car Crash Reconstruction extra credit due Thursday , May 1, in class, hard copy.

pomona
Télécharger la présentation

Physics of the Cosmos

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Physics of the Cosmos Secs 37.1-37.3

  2. Reminders • Lab B2-WNLWave Nature of Light due Friday @ 4 • In-class Quiz #6 Tuesday, April 22 • Quiz #6 will address chapters 29 and 37 • Car Crash Reconstruction extra credit due Thursday, May 1, in class, hard copy. • Reading quiz due prior to class on Thursday • Final exam, Monday, May 5, 7:50-9:50 a.m. (morning – in this room)

  3. But first… the Cosmos • The Night Sky • The Milky Way • Stars (individual, binary, variable) • Clusters (globular and open) • Nebulae (reflection, emission, dark, planetary) • SNRs, Neutron Stars, & Black Holes • Galaxies • The Universe

  4. The Night Sky

  5. The Milky Way

  6. Galactic Structure

  7. Individual Stars

  8. Binary Stars

  9. Variable Stars

  10. Clusters Open Globular

  11. Nebulae I Emission Dark

  12. Nebulae II Reflection Planetary

  13. SNRs, Neutron Stars & Black Holes SNR with Neutron Star Black Hole Model

  14. Galaxies I Spiral Barred Spiral

  15. Galaxies II Elliptical Irregular

  16. The Universe

  17. Matter & Radiation Dominance • The Big Bang started off immensely hot! • The time since the beginning of the universe is 1/H years or about 13.8 billion years. • Radiation dominated the early universe. • Matter dominance occurs after radiation “cools” enough for matter to condense per the relationship E=mc2.

  18. Matter Dominance (today) • The universe is composed mostly of matter. • Most of the past 13.8 billion years has been dominated by matter. • Our “horizon” is 13.8 billion light years away. • During this period, the rate of expansion has been slowing (but for some recent findings!) • In the past, H was much higher.

  19. Radiation Dominance (early) • Radiation dominated the early universe. • The nature of the radiation was that of a black body radiator at an extremely high temp. • Remnants of the early universe are BB-like, but strongly red-shifted.

  20. Wien’s Law

  21. Stefan-Boltzmann Law

More Related