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[[Image:Max planck.jpg|right|thumb|150px|Max Planck]]

[[Image:Max planck.jpg|right|thumb|150px|Max Planck]]

'''Max Planck''' (Kiel 1858 - Göttingen 1947) was a great [[Germany|German]] physicist. 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 April 23, 1858 - Göttingen October 4, 1947) was a great [[Germany|German]] physicist. 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]].