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songoku
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I came across two different forms of Heisenberg uncertainty:
[tex]\Delta x . \Delta p \geq \frac{h}{2 \pi}[/tex]
and
[tex]\Delta x . \Delta p \geq \frac{h}{4 \pi}[/tex]
and I read here in PF both forms are correct. I want to know how we apply both forms in solving problem.
Here is the example:
1. An electron moves with a constant velocity of 1.50 x 106 ms-1. If its momentum is measured to a precision of 0.20 percent, find the minimum uncertainty in its position
2. An electron has kinetic energy 5.00 eV and its momentum is accurate to within 0.0100%. Find the minimum uncertainty in determining the position of this electron.
Both are example questions from two different books. Question 1 is solved using first form and question 2 is solved using second form.
How to determine when to use which form?
Thanks
[tex]\Delta x . \Delta p \geq \frac{h}{2 \pi}[/tex]
and
[tex]\Delta x . \Delta p \geq \frac{h}{4 \pi}[/tex]
and I read here in PF both forms are correct. I want to know how we apply both forms in solving problem.
Here is the example:
1. An electron moves with a constant velocity of 1.50 x 106 ms-1. If its momentum is measured to a precision of 0.20 percent, find the minimum uncertainty in its position
2. An electron has kinetic energy 5.00 eV and its momentum is accurate to within 0.0100%. Find the minimum uncertainty in determining the position of this electron.
Both are example questions from two different books. Question 1 is solved using first form and question 2 is solved using second form.
How to determine when to use which form?
Thanks
Last edited: