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'''Max Planck''' (Kiel 1858 - Göttingen 1947) was a great [[Germany|German]] physicists. He advanced the subjects of [[thermodynamics]], [[thermoelectricity]], and the theory of [[dilute solutions]], and was one of the founders of [[quantum mechanics]].

'''Max Planck''' (Kiel 1858 - Göttingen 1947) was a great [[Germany|German]] physicists. He advanced the subjects of [[thermodynamics]], [[thermoelectricity]], and the theory of [[dilute solutions]], and was one of the founders of [[quantum mechanics]].

Planck's revolutionary discovery, one of the most influential in all of science, was that a resonator could emit energy in discrete units, or quanta.  The energy emitted by a resonator of frequency '''''ν''''' is '''''hν''''', where "'''''h'''''" is a universal constant that is now called Planck's constant.  This explanation resolved important discrepancies between theory and observations, and helped lay a foundation for the development of quantum mechanics.

Planck's revolutionary discovery, one of the most influential in all of science, was that a resonator could emit energy in discrete units, or quanta.  The energy emitted by a resonator of frequency '''''ν''''' is '''''hν''''', where "'''''h'''''" is a universal constant that is now called Planck's constant.  This explanation resolved important discrepancies between theory and observations, and helped lay a foundation for the development of [[quantum mechanics]].

''Planck's work on the quantum theory, as it came to be known, was published in the Annalen der Physik. His work is summarized in two books Thermodynamik  (Thermodynamics) (1897) and Theorie der Wärmestrahlung (Theory of heat radiat ion) (1906).'' <ref> [http://nobelprize.org/nobel_prizes/physics/laureates/1918/planck-bio.html Biography]</ref>

Planck's research in quantum theory was published in the ''Annalen der Physik'', and his work was summarized in the books ''Thermodynamik'' (Thermodynamics) (1897) and ''Theorie der Wärmestrahlung'' (Theory of heat radiation) (1906).<ref> [http://nobelprize.org/nobel_prizes/physics/laureates/1918/planck-bio.html Biography]</ref>

Planck was award the [[Nobel Prize]] for physics in 1918.<ref>The Earth and Its Peoples A Global History, Bulliet et al, 2005</ref>

Planck was award the [[Nobel Prize]] for physics in 1918.<ref>The Earth and Its Peoples A Global History, Bulliet et al, 2005</ref>