There is no gain or loss of energy,
which is consistent with the principle of conservation of energy *
Richand Feynman was one of the recipients of the 1965 Nobel Prize in Physics
for his fundamental work in quantum electrodynamics Rationalised 2023-24
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Wave Optics
10 7  POLARISATION
Consider holding a long string that is held horizontally, the other end of
which is assumed to be fixed