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Question Video: Recalling Who Introduced the Uncertainty Principle Chemistry • Second Year of Secondary School

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Who first introduced the uncertainty principle?

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Video Transcript

Who first introduced the uncertainty principle?

In this question, we need to determine who introduced the uncertainty principle. Let us first describe this scientific theory, and then we can figure out the answer to this question.

The uncertainty principle states we cannot precisely know the position and momentum of some microscopic objects, such as subatomic particles. Let us think about an electron around a positively charged nucleus. We should consider the situation where scientists use photons to determine the position of the electron.

The diagram shows the electron location becomes apparent as a photon falls on the negatively charged particle. The electron gets a different momentum as it interacts with the electromagnetic packet of energy. So, we can effectively determine the position of the electron as its momentum changes and becomes unknown. Here, we see there is a fundamental limit for figuring out the certain complementary variables of microscopic objects. For example, pertaining to the electron, we cannot precisely determine pairs of properties like position and momentum.

Werner Heisenberg introduced this scientific principle, and he is incredibly famous because of his contribution to science. This scientific theory fundamentally changed our understanding of the universe. It showed that some parts and properties of matter are inherently unknowable.

Therefore, Heisenberg first introduced the uncertainty principle.

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