Formulas
- The Prisoner of Benda
- Thermodynamic activity
- Thermodynamic system
- Thermodynamic temperature
- Thickness (graph theory)
- Thin lens
- Third law of thermodynamics
- Thomae's function
- Thomas precession
- Thompson's construction
- Thorium
- Damping
- Equation of state (cosmology)
- Equation of the center
- Equatorial ascendant