Tetrafluoromethane (Carbon tetrafluoride) is a useful refrigerant but also a potent greenhouse gas.

A Tesla coil is an electrical resonant transformer circuit designed by inventor Nikola Tesla in 1891.

Sometimes used informally to refer to any area of water over which a state has jurisdiction usually 12nm from the coast.

Ternary fission is a comparatively rare type of nuclear fission in which three charged products are produced rather than two.

A tension-leg platform is a vertically moored floating structure normally used for the offshore production of oil or gas, and is particularly suited for water depths greater than 300 metres (about 1000 ft) and less than 1500 metres (about 4900 ft). Use of tension-leg platforms has also been proposed for wind turbines.

A tension control bolt is a heavy duty bolt used in steel frame construction.

In physics, tension is described as the pulling force transmitted axially by the means of a string, a cable, chain, or similar one-dimensional continuous object, or by each end of a rod, truss member, or similar three-dimensional object.

Tensile testing is a fundamental materials science and engineering test in which a sample is subjected to a controlled tension until failure.

Temperature is a physical quantity that expresses hot and cold.

Ultimate tensile strength is the maximum stress that a material can withstand while being stretched or pulled before breaking.

Temperate climates of Earth occur in the middle latitudes (40° to 60° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout the year and more distinct seasonal changes.

Tectonics are the processes that control the structure and properties of the Earth's crust and its evolution through time.

Techno-economic assessment or techno-economic analysis is a method of analyzing the economic performance of an industrial process, product, or service.

A set of data that describes the dimensions and working capacity of a machine.

A technical standard is an established norm or requirement for a repeatable technical task.

Technical peer review is a type of engineering review, they are a well defined review process for finding and fixing defects, conducted by a team of peers with assigned roles.

Technical drawing, drafting or drawing, is the act and discipline of composing drawings that visually communicate how something functions or is constructed.

Technical documentation is a generic term for the classes of information created to describe (in technical language) the use, functionality or architecture of a product, system or service.

A comparison of similar equipment or process usually to highlight the benefits and disadvantages of the equipment or process, usually included in suggested solutions to meet an end goal or alternatives to existing processes.

A schedule of rates that a utility provider charges for electricity.