Unformatted text preview: Penumbra = secondary shadow Only park of the sun is blocked (so at Y – a partial eclipse is observed). When the umbra doesn’t reach the Earth, the Moon doesn’t completely hide the Sun. At A, you see “bull’s eye” effect. This is called an Annular eclipse (a kind of solar eclipse). Solar corona (outer atmosphere – of the sun) is visible during totality. Refraction by Earth’s atmosphere allows us to see Moon in umbra • Refraction – when light bends as it encounters and move through a different medium. • Dust scatters blue light creating reddish appearance of eclipsed moon....
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- Spring '10
- Moons, lit tle bit, Synchronous rotation Orbital