Equation


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Kimberly 1H
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Equation

Postby Kimberly 1H » Thu Oct 18, 2018 6:08 pm

What is the significance of h/4 in Heisenberg's uncertainty equation?

Chem_Mod
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Re: Equation

Postby Chem_Mod » Thu Oct 18, 2018 8:31 pm

With this value, you can determine the uncertainties in momentum or distance of a particle via the Heisenberg Uncertainty Principle. The main thing to take away is that the uncertainties are inversely proportional (ex. the more certain we know momentum's value, the less certain we know distance's value, and vice versa).

Karina Jiayu Xu 4E
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Re: Equation

Postby Karina Jiayu Xu 4E » Fri Oct 19, 2018 8:57 pm

Is there a reason why they use pie?

005199302
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Re: Equation

Postby 005199302 » Sun Oct 21, 2018 2:26 pm

I read that it was derived by integrating wave functions over the bell curve.

Chem_Mod
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Re: Equation

Postby Chem_Mod » Sun Oct 21, 2018 2:32 pm

What the inequality says is that the absolute best you can do when determining both momentum and position at the same time is h/4π. This means that the uncertainty can be equal to h/4π or more, never less.

Layla Manoochehri
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Re: Equation

Postby Layla Manoochehri » Sun Oct 21, 2018 7:22 pm

im confused, is it h/4π or is it h(bar)/2? or are they the same thing?

Jennifer Guzman 4C
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Re: Equation

Postby Jennifer Guzman 4C » Sun Oct 21, 2018 7:33 pm

Layla Manoochehri wrote:im confused, is it h/4π or is it h(bar)/2? or are they the same thing?

From my understanding, They are the same thing but most physic majors tend to use h(bar)/2


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