The Astrolabe: The First Computer (or “Hello World!” on the Astrolabe)

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The Astrolabe: The First Computer (or “Hello World!” on the Astrolabe)

  1. 1. Lorem Ipsum <ul><li>Bullet 1 </li></ul><ul><li>Bullet 2 </li></ul><ul><li>Bullet 3 </li></ul>
  2. 2. Cool! silly
  3. 3. “ Billions and billions of stars!” Star patterns in the sky are mere illusions, and transient.
  4. 4. Lorem Ipsum <ul><li>Bullet 1 </li></ul><ul><li>Bullet 2 </li></ul><ul><li>Bullet 3 </li></ul>
  5. 5. Not an “overhead projector”!!
  6. 8. 2150 year ago, Greeks knew a lot . <ul><li>Size of the earth </li></ul><ul><li>Approximate size of sun and moon </li></ul><ul><li>Oh, and that the EARTH IS ROUND </li></ul>… and even though there are “ billions and billions of stars”, to us they really do just look like they’re spinning around on some outer sphere.
  7. 9. After Copernicus Before Copernicus For naked eye, earth based observation, there is NO DIFFERENCE.
  8. 10. NOT TO SCALE !!!!!!!!!!
  9. 11. Astrolabe 1250 A.D. Planisphere 2009 A.D.
  10. 12. Stereographic Projection causes DISTORTION Planisphere offers no help Astrolabe has grid lines.
  11. 13. Make your astrolabe from a kit!
  12. 17. That’s a star!
  13. 19. Sunset
  14. 20. Naked Eye Astronomy <ul><li>Focuses on apparent motion of </li></ul><ul><ul><li>sun, stars, planets, moon </li></ul></ul><ul><li>Relevant every day of your life </li></ul><ul><li>Likely the most tangible connection to all of humanity </li></ul>
  15. 21. Astrolabes <ul><li>Adler Planetarium’s website </li></ul><ul><li>deltronweb.com/astrolabes </li></ul><ul><li>TWITTER: hcovitz </li></ul>

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