How Is Uncertainty in Position Determined for a Confined Proton?

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SUMMARY

The uncertainty in the position of a confined proton is determined by its diameter, d. The discussion clarifies that the uncertainty, denoted as delx, should be considered as d/2 when assuming the proton is located at the center of the confinement. This interpretation resolves the confusion surrounding the use of the entire diameter versus half of it in various contexts. Therefore, the established conclusion is that the correct uncertainty in position for a confined proton is d/2.

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MarkusNaslund19
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Let's say a proton is confined to some diameter, d. What would be the uncertainty in the position?

In some questions they use delx as (1/2)d as the uncertainty in position. In other cases they use the entire d as the uncertainty. This is extremely confusing...
 
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Must be d/2

If I guess that the proton is in the middle, then the most I can be wrong by is d/2.
 

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