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'''Gulielmus Thomson, primus baro Kelvin''' (natus [[Belfastum|Belfasti]] die [[26 Iunii]] [[1824]] in oppido ''Belfast''; mortuus die [[17 Decembris]] [[1907]]), [[physica|physicus]], [[mathematicus]], et [[ingeniarius]] [[RegnumBritanniarum UnitumRegnum|Britannicus]], hodie praeclarissimus est non solum quia gradus [[Kelvin (unitas)|temperaturae absolutae]] invenitexcogitavit,<ref>

W. Thomson "On an absolute thermometric scale founded on Carnot's theory of the motive power of heat, and calculated from Regnault's observations," Math. and Phys. Papers '''1''', 100-106 (1848).

</ref> sed etiam quia analysim mathematicam scientiarum [[physica electromagnetica|electromagneticae]] et [[physica statistica et thermodynamica|thermodynamicae]] saeculi[[saeculum 19|saeculi undevicensimi]] maxime ingreditur.

:''Non est possibile, nisi facultas immaterialis intercedit, phaenomenon mechanicae derivare e cuiusquam materiae parte quam frigescimus sub frigidissima tempuratura corporum circumpositorum.''<ref>[[Anglice]]: "It is impossible, by means of inanimate material agency, to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of the surrounding objects," W. Thomson, "On the dynamical theory of heat; with numerical results deduced from Mr. Joule's equivalent of a thermal unit and M. Regnault's observations on steam," Math. and Phys. Papers '''1''' (1851). p. 179.</ref>

Suis cum [[Iacobus Prescott Ioule|Iacobo Ioule]] operis de caloris natura annos [[1852]]-[[1856]] theoriam cineticam caloris magnopere statuit.<ref>W. Thomson, "On the thermal effects of fluids in motion, " Math. and Phys. Papers '''1''', pp. 333-455 (1856).</ref> Annos [[1855]]-[[1856]] Thomson quoque cum Petro Guthrie Tait collaboravit et scripsit suorum magnum "Detractatus de Philosophia Naturali" qui novam disciplinam physicae unificabat sub sententia energiae.<ref>W. Thomson et P. G. Tait, ''Treatise on Natural Philosophy'', Oxford, 1867.</ref>

{{DEFAULTSORT:Lifetime|1824|1907|Kelvin, Gulielmus Thomson}}