Physical Sciences

2 domain-specific abstractions whose origin domain is Physical Sciences.

• Density Current — A fluid or fluidized mixture propagates through or beneath an ambient medium because a density contrast converts gravitational potential into a directed intrusion with a moving front and a stratified interface.
• Strain Localisation — Distributed deformation becomes unstable and concentrates into a narrow band because local deformation changes the material or geometry in a way that attracts still more strain, creating a self-focusing path toward necking, shear banding, faulting, or breakup.