## Meaning of Delta and Uncertainty

$\Delta p \Delta x\geq \frac{h}{4\pi }$

Brandon Mo 4K
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Joined: Fri Sep 28, 2018 12:15 am

### Meaning of Delta and Uncertainty

What do the deltas in the Heisenberg Indeterminacy equation mean?

Before I thought it meant "change in", but after going to a UA session, delta meant uncertainty.

If delta means uncertainty, what does uncertainty mean?

Chem_Mod
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### Re: Meaning of Delta and Uncertainty

Uncertainty is the extent to which we know or do not know a measurement. For example, we estimate a runner's speed to be 5mph, but we think it might be 4mph or 6mph. The uncertainty in this scenario would be 2mph (delta v = 2) because we are not 100% sure what the speed is.

Henry Dudley 1G
Posts: 61
Joined: Fri Sep 28, 2018 12:16 am

### Re: Meaning of Delta and Uncertainty

Yes it is the range of the area we know that the actual number is in