Share: Title:Geometric Optics: Crash Course Physics #38 Duration: 9:40 Plays: 881K views Published: 7 years ago Download MP3 Download MP4 Simillar Videos ▶️ 12:21 The Excretory System: From Your Heart To The Toilet - Crashcourse Biology #29 881K views • 12 years ago ▶️ 10:33 Metabolism & Nutrition, Part 1: Crash Course Anatomy & Physiology #36 881K views • 9 years ago ▶️ 10:36 The Nervous System, Part 1: Crash Course Anatomy & Physiology #8 881K views • 9 years ago ▶️ 11:53 The Digestive System: Crashcourse Biology #28 881K views • 12 years ago ▶️ 11:40 Circulatory & Respiratory Systems - Crashcourse Biology #27 881K views • 12 years ago