Wave reflection


Sound Waves

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Die helle Not

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Determination of Asteroids rotation periods (Lesson Plan)

4
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Asteroids (Theory)

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Telescopes: The perfect machines (Lecture in Greek)

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Telescopes (presentation)

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Wieviele Sterne sehen wir noch? (Link)

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Lichtverschmutzung - Stundenbild (Guided Research Model)

3
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