Formulas
- Scalar potential
- Scale space
- Scanning transmission electron microscopy
- Scattering parameters
- Schizophrenic number
- Schläfli symbol
- Schröder's equation
- Schröder–Bernstein theorem
- Schrödinger equation
- Schwarz triangle
- Schwarzschild metric
- Schwarzschild radius
- Schwarz–Christoffel mapping
- Scoring rule
- Elasticity (physics)