Chemistry and Physics
- Technetium (symbol Tc), a chemical element
- Temperature coefficient
- Teracoulomb, an SI unit for electric charge equal to 1012 coulombs
- Tesla coil, a category of high-voltage discharge coils
- Thermocouple, a widely used type of temperature sensor
- "To contain", on laboratory glassware
- Tonnes of Carbon (tC)
- Temperature cycling, a reliability test
Tc may refer to:
- Critical temperature
- Convective temperature
- Curie temperature
- Time constant
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