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| View Original: | Feynmans QED probability amplitudes.gif (330x310) | |||
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| Keywords: Feynmans QED probability amplitudes.gif Richard Feynman using little clocks timing each event instead of the formal complex numbers A light source S emits light which bounces off the mirror in blue and reaches the detector P An obstruction between S and P gray rectangle avoids a direct path between source and detector The graph below represents the time it takes for light to traverse each path The probability amplitude of all paths the little spinning arrows must be summed to find the vector S The magnitude of this vector which is the sum of all amplitudes is squared to reach the final probability of light reaching P Paths closer to the path of least time at the center contribute the most to the total amplitude which is consistent with the expected behavior in classical physics Adapted from QED The Strange Theory of Light and Matter own Lucas V Barbosa 2012-07-17 Quantum electrodynamics Richard Feynman Vector addition Animations of quantum mechanics Animated GIF | ||||
