Why is ketchup so hard to pour? - George Zaidan

View full lesson: Ever go to pour ketchup on your nothing comes out? Or the opposite happens, and your plate is suddenly swimming in a sea of red? George Zaidan describes the physics behind this frustrating phenomenon, explaining how ketchup and other non-Newtonian fluids can suddenly transition from solid to liquid and back again. Lesson by George Zaidan, animation by TOGETHER.