Ondřej Černotík
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 Oct 17 answered How to understand “always create before we annihilate, not the other way around”? Jun 25 answered Problem in Grandfather paradox Dec 3 answered Difference in perception of unpolarized and polarized light Nov 22 answered In terms of covariance matrices, are partial measurement and partial trace equivalent? Oct 30 answered What to consider before taking a physics course (given a mathematical background)? Aug 15 answered Brewster angle with diffraction propagation? Jun 15 asked In terms of covariance matrices, are partial measurement and partial trace equivalent? Jun 9 answered What is the name of the equation which led to the Schrödinger one? May 27 answered How can acceleration $a$ be zero when applied force $F$ is non-zero? May 27 answered Poynting vector direction May 27 answered What is the most general unitary that commutes with a one dimensional projector in a finite dimensional Vector Space May 27 answered Can one of Newton's Laws of motion be derived from other Newton's Laws of motion? May 26 answered Find E and B from vector potential May 25 answered How to draw a ray diagram from focal length, object and image heights? May 25 answered Why do prisms work (why is refraction frequency dependent)? May 24 answered Zero point fluctuation of an harmonic oscillator May 7 answered Energy eigenvalues of a Q.H.Oscillator with $[\hat{H},\hat{a}] = -\hbar \omega \hat{a}$ and $[\hat{H},\hat{a}^\dagger] = \hbar \omega \hat{a}^\dagger$ May 7 answered Density Operator, Expectation Value, Coherent States May 6 answered Coherent State, Unitary Operators, Harmonic Oscillator Apr 6 answered how laser interact with atoms?