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Mathematics is the language of physics. An occurrence in the physical world can be explained by different mathematical models. However, there can be only one physical model for a comprehensive understanding of the phenomenon. All mathematical models must conform to the same physical reality. A physical model should help illustrate an effect and make the phenomenology easier to visualize. A qualitative explanation is more inspirational than a quantitative one. We should be able to picture in our mind’s eye, what lies behind the formula.
“If I can’t picture it, I can’t understand it.” Albert Einstein.
“Imagination is more important than knowledge.”
Albert Einstein, 1929
“For the rest of my life, I will reflect on what light is.”
Albert Einstein, 1917
All these fifty years of conscious brooding have brought me no nearer to the answer to the question : ‘What are light quanta ?’
Albert Einstein, 1951
“I therefore take the liberty of proposing for this hypothetical new atom, which is not light but plays an essential part in every process of radiation, the name PHOTON.”
Gilbert Newton Lewis, 1926
“I would be happy just to know what an electron is.”
Albert Einstein, 1950’s. In reply to the ever increasing number of subatomic particles which were being found using high energy accelerators.
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