Video · Spectra Interference: Crash Course Physics #40 TwitterShare on Facebook114 74 425 views Crash Course - February 2, 2017 Science Crash Course More Videos What is Plate Tectonics: Crash Course Geology #10 Science · 1 week ago What is Plate Tectonics: Crash Course Geology #10 Science · 1 week ago How Water Shapes the Land: Crash Course Geology #9 Science · 2 weeks ago How Water Shapes the Land: Crash Course Geology #9 Science · 2 weeks ago Myths About Diamonds: Crash Course Geology #8 Science · 3 weeks ago How Do Gems Form?: Crash Course Geology #7 Science · June 4, 2026 How Do Gems Form?: Crash Course Geology #7 Science · June 4, 2026 A Message From Hank Green Science · May 28, 2026
