## Large Objects and Heisenberg Uncertainty

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

Parker Smith
Posts: 102
Joined: Thu Jul 25, 2019 12:15 am

### Large Objects and Heisenberg Uncertainty

I'm experiencing some confusion answering this question:
For large everyday objects does Heisenberg's uncertainty (indeterminacy) principle play any measurable role?

A. Yes, the uncertainties in position, speed, and momentum of a stationary object are noticeable or measurable.

B. Yes, the uncertainties in position, speed, and momentum of a moving object are noticeable or measurable.

C. No, the uncertainties in position, speed, and momentum of a stationary object are not noticeable or measurable.

D. No, the uncertainties in position, speed, and momentum of a moving object are not noticeable or measurable.

Rory Simpson 2F
Posts: 106
Joined: Fri Aug 09, 2019 12:17 am

### Re: Large Objects and Heisenberg Uncertainty

The uncertainty principle definitely isn't noticeable and has no real practical effect on a larger object because the relative uncertainty is negligible compared to the macroscopic object; the principle mainly applies to subatomic particles where measurements have to be precise. Additionally, it would have to be moving because the uncertainty principle implies that there is an uncertainty in momentum, and thus velocity. That would contradict the idea of any object being stationary because otherwise we would be able to exactly figure out its momentum and position.