## Smart answer:

# Your search for *′what is the uncertainty principle′* returned the following results:

### any of a variety of mathematical inequalities

In quantum mechanics, the uncertainty principle (also known as Heisenberg's uncertainty principle) is any of a variety of mathematical inequalities asserting a fundamental limit to the accuracy with which the values for certain pairs of physic ... ).

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### to any of a variety of mathematical inequalities asserting a fundamental limit

[…] That’s enough on this I guess, but let me – as a way to conclude this little digression – just quickly state the Uncertainty Principle in a more or less accurate version here, rather than all of the ‘descriptions’ which you may have seen of it: the Uncertainty Principle refers to any of a variety of mathematical inequalities asserting a fundamental limit (fundamental means it’s got nothing to do with observer or measurement effects, or with the limitations of our experimental technologies) to the precision with which certain pairs of physical properties of a particle (these pairs are known as complementary variables) such as, for example, position (x) and momentum (p), can be known simultaneously.

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### a fundamental concept of quantum mechanics

The uncertainty principle, first introduced by Werner Heisenberg in the late 1920s, is a fundamental concept of quantum mechanics.

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### one of the cornerstones of quantum mechanics

The uncertainty principle is one of the cornerstones of quantum mechanics and was discovered by Werner Heisenberg in 1927.

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