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Finally, in 1926, Heisenberg came up with a celebrated compromise, producing a new discipline that came to be known as quantum mechanics. At the heart of it was Heisenberg's Uncertainty Principle, which states that the electron is a particle but a particle that can be described in terms of waves.
1926年，海森伯終于想出個極好的妥協辦法，提出了一種后來被稱之為量子力學的新理論。該理論的核心是“海森伯測不準原理”。它認為，電子是一種粒子，不過是一種可以用波來描述的粒子。
The uncertainty around which the theory is built is that we can know the path an electron takes as it moves through a space or we can know where it is at a given instant, but we cannot know both. Any attempt to measure one will unavoidably disturb the other. This isn't a matter of simply needing more precise instruments; it is an immutable property of the universe.
作為建立該理論基礎的“測不準原理”認為，我們可以知道電子穿越空間所經過的路徑，我們也可以知道電子在某個特定時刻的位置，但我們無法兩者都知道。任何想要測定其中之一的努力，勢必會干擾其中之二。這不是個需要更精密的儀器的簡單問題；這是宇宙的一種不可改變的特性。
