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The experiment took center stage again in the early 20th century, when two of the founders of quantum physics, Albert Einstein and Niels Bohr,
grappled with its revelations about the nature of reality.
In the 1960s, Richard Feynman extolled its virtues, saying that the double slit experiment contained all of the mysteries of the quantum world.
Listen to native speakers pronounce “grappled” in real conversational contexts with synchronized timestamps and subtitles.