Heisengberg Uncertainty Equation Meaning


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vanessas0123
Posts: 100
Joined: Wed Sep 11, 2019 12:17 am

Heisengberg Uncertainty Equation Meaning

Postby vanessas0123 » Thu Oct 17, 2019 2:50 pm

What does Heisenberg Uncertainty Equation measure and when would you use it?

Haley Chun 4H
Posts: 54
Joined: Sat Aug 17, 2019 12:18 am

Re: Heisengberg Uncertainty Equation Meaning

Postby Haley Chun 4H » Thu Oct 17, 2019 3:12 pm

The equation means that there is uncertainty in the momentum and position of a particle, so it basically measures this uncertainty. The questions will probably ask things like "What is the minimum uncertainty in its position?" or "What is the minimum uncertainty in the speed?"

kim 2I
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Joined: Thu Jul 25, 2019 12:17 am

Re: Heisengberg Uncertainty Equation Meaning

Postby kim 2I » Thu Oct 17, 2019 3:21 pm

The Heisenberg uncertainty principle states that if the location of a particle is known with an uncertainty (delta X), then the momentum of the particle (p) can be also known within the uncertainty of delta p. The equation is usually used to find the minimum uncertainty in the speed (delta v) or the position (delta X).

505316964
Posts: 95
Joined: Thu Jul 11, 2019 12:17 am

Re: Heisengberg Uncertainty Equation Meaning

Postby 505316964 » Sat Oct 19, 2019 12:16 pm

In the Heisenberg equation, what number would you plug in for delta X? and what does X stand for?

Diana_Diep2I
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Re: Heisengberg Uncertainty Equation Meaning

Postby Diana_Diep2I » Sat Oct 19, 2019 3:06 pm

505316964 wrote:In the Heisenberg equation, what number would you plug in for delta X? and what does X stand for?

The delta X would be the space that the electron is confined in, so its position could be anywhere within that space. For example, in problem 1B25, it gives us the info where the diameter of the lead atom is 350 pm. Delta X would be that 350 pm bc the electron's position is somewhere within that diameter.

Fdonovan 3D
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Joined: Sat Aug 17, 2019 12:16 am

Re: Heisengberg Uncertainty Equation Meaning

Postby Fdonovan 3D » Sun Oct 20, 2019 12:59 pm

Basically, on a very small scale, the path that is taken by an electron is not exactly certain therefore the velocity and momentum aren't 100% accurate either. The Heisenberg Indeterminacy Equation is used to account for this limit on how accurate the velocity and momentum can be.

Claire Stoecklein 1E
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Joined: Sat Jul 20, 2019 12:15 am

Re: Heisengberg Uncertainty Equation Meaning

Postby Claire Stoecklein 1E » Sun Oct 20, 2019 2:13 pm

Conceptually, the Heisenberg uncertainty equation demonstrates the relationship between knowledge of a particle's velocity and its position. When we accurately measure the position, it becomes more difficult to pinpoint the general trend of its path, and when we understand its path, it is hard to know where it will be at any given moment.

ZevMarx-Kahn3C
Posts: 52
Joined: Sat Aug 17, 2019 12:17 am

Re: Heisengberg Uncertainty Equation Meaning

Postby ZevMarx-Kahn3C » Sun Oct 20, 2019 3:30 pm

Are there any textbook practice problems that you guys would recommend in particular for these concepts?


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