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-6.[Werner Heisenberg]() **(1927)**  <br>
+6. [Werner Heisenberg]() **(1927)**  <br>
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    * Uncertainty Principle, central to quantum physics.
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  #
 
-7. **Paul Dirac (1928)**  
+7. **Paul Dirac (1928)**  <br>
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+
    * Developed the relativistic theory of the electron and contributed to quantum mechanics.
 
    Dirac equation for relativistic particles: