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 Date: 2010-02-12 18:45:01Fiction Optical phenomena Optics Observational astronomy Shadow Visibility Umbra penumbra and antumbra Sky Optical depth |
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| First Page | Document Content | |
|---|---|---|
Date: 2010-02-12 18:45:01Fiction Optical phenomena Optics Observational astronomy Shadow Visibility Umbra penumbra and antumbra Sky Optical depth |
Add to Reading List |
Mountain shadow phenomena. an off-summit observer 2: The spike seen by David K. Lynch