Discover The Astonishing Number: How Many Water Drops Can Fit Atop A Penny?
Surface tension, cohesion, and adhesion govern how water behaves on a penny. Surface tension creates an invisible elastic membrane on the water’s surface. Cohesion, the attraction between water molecules, and adhesion, the attraction between water and the penny, determine the water’s shape. These forces create a curved surface called a meniscus, which influences how many…