Uncertainty Value


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Doreen Liu 4D
Posts: 54
Joined: Wed Sep 11, 2019 12:17 am

Uncertainty Value

Postby Doreen Liu 4D » Thu Oct 17, 2019 6:06 pm

When the uncertainty is some value plus minus another value (e.g. 2.35±0.1 pm), is the uncertainty value 0.1 or is the value altogether the uncertainty?

Ryan Chang 1C
Posts: 105
Joined: Sat Aug 24, 2019 12:17 am

Re: Uncertainty Value

Postby Ryan Chang 1C » Thu Oct 17, 2019 6:30 pm

The uncertainty value would be 0.2pm because the position could be at 2.34 to 2.36.

TarynD_1I
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

Re: Uncertainty Value

Postby TarynD_1I » Thu Oct 17, 2019 10:46 pm

the uncertainty value is 0.2 because the actual value would lie between 2.34 - 2.36.

105335337
Posts: 103
Joined: Sat Aug 24, 2019 12:15 am

Re: Uncertainty Value

Postby 105335337 » Thu Oct 17, 2019 10:51 pm

The uncertainty value is 0.2 because you add .1 and subtract .1 from the given value, giving a total uncertainty value of 0.2.

105335337
Posts: 103
Joined: Sat Aug 24, 2019 12:15 am

Re: Uncertainty Value

Postby 105335337 » Thu Oct 17, 2019 10:51 pm

The uncertainty value is 0.2 because you add .1 and subtract .1 from the given value, giving a total uncertainty value of 0.2.

Arianna Perea 3H
Posts: 50
Joined: Thu Jul 25, 2019 12:17 am

Re: Uncertainty Value

Postby Arianna Perea 3H » Fri Oct 18, 2019 6:26 pm

What happens if the uncertainty is less than h/4pi?

Michelle N - 2C
Posts: 117
Joined: Wed Sep 18, 2019 12:19 am

Re: Uncertainty Value

Postby Michelle N - 2C » Sat Oct 19, 2019 10:48 pm

Whenever there's a ±(number), the uncertainty would be taking into account both. :)

So in your case, ±0.1, it would be 0.2.

Tiffany_Chen 2K
Posts: 106
Joined: Fri Aug 30, 2019 12:15 am

Re: Uncertainty Value

Postby Tiffany_Chen 2K » Sat Oct 19, 2019 11:24 pm

Arianna Perea 3H wrote:What happens if the uncertainty is less than h/4pi?


The best scenario would be equal to h/4pi.

Quynh Vo
Posts: 45
Joined: Sun Sep 29, 2019 12:15 am

Re: Uncertainty Value

Postby Quynh Vo » Sun Oct 20, 2019 8:40 pm

The answer would be .2 because that's the value that is uncertain. It is the difference of the possible positions.


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