Thermo-dynamics

Thermo-dynamics, name given to the modern science of the relation between heat and work, which has established two fundamental principles, that when heat is employed to do work, the work done is the exact equivalent of the heat expended, and when the work is employed to produce heat, the heat produced is exactly equivalent to the work done.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Therapeutæ * Thermopylæ
Theodore
Theodore
Theodoret
Theodoric
Theodosius I., the Great
Theognis
Theology
Theophrastus
Theosophy
Therapeutæ
Thermo-dynamics
Thermopylæ
Thersites
Theseus
Thespis
Thessalonians, Epistle to the
Thessalonica
Thessaly
Thetford
Thetis
Theuriet, André