Niels Bohr — "The task of science is both to extend the range of our experience and to reduce …"
The task of science is both to extend the range of our experience and to reduce it to order.
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More from Niels Bohr
"The electron is an elementary particle, but it is not a 'thing' in the usual sense of the word."
"The history of science is full of examples of how new ideas have been met with resistance, only to be accepted later."
"The purpose of science is not to answer ultimate questions, but to make progress in understanding."
"The aim of science is to purify our notions, not to increase the number of facts."
"The progress of science depends on the freedom of thought."
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Understanding this quote
What it means
Science has two jobs that work together. First, it pushes outward, discovering new phenomena and expanding what humans can observe, measure, and experience. Second, it pulls inward, organizing those discoveries into coherent theories, laws, and frameworks so the chaos of raw data becomes understandable. Without exploration, knowledge stagnates; without organization, findings pile up as meaningless noise. Real science requires both expanding horizons and imposing structure.
Relevance to Niels Bohr
Bohr embodied this duality. He extended experience by probing atomic structure, proposing quantized electron orbits that revealed a hidden subatomic world no one had seen. Then he reduced it to order through his atomic model and the complementarity principle, giving physicists a conceptual framework for quantum behavior. His Copenhagen Institute became a hub where experimental discoveries were constantly synthesized into theory, making Bohr as much an organizer of knowledge as a discoverer.
The era
Bohr worked during physics' most turbulent revolution (1910s-1950s). Classical Newtonian order was shattered by radioactivity, relativity, and strange atomic spectra. Experiments kept producing results that defied existing theory, and physicists scrambled to make sense of electrons, photons, and wave-particle duality. Simultaneously, two world wars and the Manhattan Project raised urgent questions about science's purpose. Bohr's insistence on both expanding and ordering knowledge directly answered that chaotic moment in intellectual history.
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