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Slide 1 Sound and Light Chapter 17 Lesson 1: What is Sound? Lesson 2: What is Light? Slide 2 Lesson One Vocabulary Vibration- a back-n-forth movement of matter Volume-…
Life in the Universe Optics and Telescopes Lecture 11 Why do we use telescopes? Human eyes are lenses! Using larger lenses… collect more light magnification Larger…