Thermodynamics : (first law : energy cannot be created or destroyed, only converted from one from to another) Julius Von Mayer, Germany, 1842; James Joule, England, 1843; (second law : heat cannot itself pass from a colder to a warmer body) Rudolph Clausius, Germany, 1850; (third law : the entropy of ordered solids reaches zero at the absolute zero of temperature) Walter Nernstm Germany, 1918.
Thermometer : (open-column) Galileo Galilei, c.1593; (clinical) Santorio Santorio, Padua, c.1615; (mercury, also Fahrenheit scale) Gabriel D. Fahrenheit, Germany, 1714; (centigrade scale) Anders Celsius, Sweden, 1742;
(absolute-temperature, or Kelvin, scale) William Thompson, Lord Kelvin, England, 1848.
Tire, Pneumatic : Robert W. Thompson, England, 1845; (bicycle tire) John B. Dunlop, Northern Ireland, 1888.
Transformer, Electric : William Stanely, U.S.A., 1885.
Transistor : John Bardeen, Walter H. Brattain, William B. Shockley, U.S.A., 1947.
Typewriter : Chrisher Sholes, Carlos Glidden, U.S.A., 1867.
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