image tag: quantum theory, image quantity: 4

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albert einstein, man, physicist, scientist, e mc2, vintage, professor
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albert einstein, portrait, theoretician physician, scientist, personality of the 20th century, professor, theory of relativity
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albert einstein, 1921, portrait, theoretician physician, scientist, personality of the twentieth century, genius
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albert einstein, 1921, sad look, portrait, theoretician physician, scientist, personality of the twentieth century