XXth century_physics
XXth century_physics
XXth century_physics
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The crisis of the quantum theory<br />
”The hypothesis of light quanta...is not able to throw light on the<br />
nature of radiation."<br />
Bohr, Nobel lecture (1922)<br />
”A general description of phenomena, in which the laws of the<br />
conservation of energy and momentum retain in detail their<br />
validity in their classical formulation, cannot be carried through...<br />
the conservation of energy, as defined by means of classical<br />
conceptions, seems at once to be excluded."<br />
Bohr (1923)