Temperature

(n.) Physical quantity measured using a thermometer. The usual unit of temperature is the degree Celsius (°C).

Terminal

(n.f.) Connection point of an electrical element.

Thermal Energy

(n.) The capacity of an object to increase temperature or produce a change of state.

Thermometer

(n.) Instrument used to measure temperature.

Trajectory

(n.) Set of positions occupied by an object over time.

Transparent Medium

(n.) A portion of space that allows light to pass through.

Troposphere

(n.) Lower layer of the atmosphere, consisting of air.

Tungsten Filament

(n.) A very fine tungsten wire that produces light when an appropriate current passes through it. It is the filament used in incandescent lamps. The tungsten filament is enclosed in an atmosphere of argon, a completely inert rare gas.