UI Density Matthew Ström, designer-leader

Materials have density Density is the ratio of mass to volume for a material ρ = m V Units 1,000 kg

density of water is gml The density of some common elements are shown below: Densities of selected elements element density appearance

density Since mass equals density X volume , an object floated in liquids of different densities will displace different volumes of liquid A hydrometer

density Knowing the density of materials is very useful Designers will estimate the weight of a product by multiplying the volume by the density of a