CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY
Density experiment. Water on top of copper beads on top of mercury in a measuring cylinder. Although mercury is a liquid at room temperature, it is denser than copper, which floats on top of it. Water is less dense than both copper and mercury. Density is the mass of a substance per unit volume.
Model release not required. Property release not required.