Quantum mechanics - Simple English Wikipedia, the free encyclopedia
Harmonic oscillator (classical) - Citizendium
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Quantum entanglement - Wikipedia
Euler's rotation theorem - Wikipedia
Isaac Newton - Citizendium
What paradigm shifts in science and physics are likely to occur over the next 100 years? - Quora
Quantum Mechanics Lecture on Solving the Angular Equation for a Central Potential and Deriving the Spherical Harmonic Solutions, PDF, Wave Function
Gamma function - Wikipedia
Galileo Galilei - Citizendium