The more precise the measurement of position, the more imprecise the measurement of momentum, and vice versa. In the most extreme case, absolute precision of one variable would entail absolute imprecision regarding the other.
About this quote
- What does it mean?
- Heisenberg explains that precise measurement of position makes momentum measurement less precise, and vice versa.
- In plain terms
- Measuring one quantum property accurately reduces accuracy of its counterpart.
- What can you take from it?
- There is a fundamental trade‑off between position and momentum precision.
Where it applies
Putting it to work
Questions to consider
- Why does measuring one variable affect the other?
- How does this limit experimental design?
Another view
The principle applies at quantum scales, not everyday macroscopic objects.
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