Glossary T

Toxicity equivalent commonly referred to as TEQ, means a mass or concentration which is a sum of the masses or concentrations of individual congeners of polychlorinated dibenzo- p- dioxins and polychlorinated dibenzofurans multiplied by weighting factors set out in the Guide for Reporting to the National Pollutant Release Inventory - 2003.

Tin is described as a metal with a low melting point; therefore it is often used for solder. It is malleable and resists corrosion. Tin is used to produce tinplate (steel coated with tin) for food packaging.

Telephoto lens is identified as a specialized camera lens that acts much the same way as a telescope does for the naked eye.

Railcars that are designed to haul bulk liquids or gas commodities.

Talc is described as a soft, fine-grained mineral used to impart a soapy texture to dry mixtures. Hydrated magnesium silicate; a glaze ingredient but also used in whiteware bodies in place of clay; has clay- like properties but lacks real plasticity.

Table tennis is a game which is also known as Ping-Pong resembling tennis but played on a table with paddles and a light hollow ball.

Thermoscope is an instrument to measure heat and cold invented by Galileo Galilei (1564-1642) during his stay in Padua.

Tunable laser is defined as a laser system that can be tuned to emit laser light over a continuous range of wavelengths or frequencies.