Talk:Mean squared displacement

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Untitled

The expanded formula shown on the page should be <x^2> + x0^2 - 2<x>*x0

Not plus.

Wiki Education Foundation-supported course assignment

This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): Matti1993, Lunj12. Peer reviewers: Matti1993, Lunj12.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 00:46, 18 January 2022 (UTC)[reply]

MSD main equation units inconsistency

Hi, fellow Wikipedia editors,

I believe the first equation for the MSD is incorrect in the sense that it provides the wrong units as an answer. The units for the MSD should be [L²], whereas the multiplication by (1/T) outside the summation term makes it result on units of [L²/T].

My suggestion is to replace the symbol T which gives the sense of "time" here (and so is described just below the equation), while it actually seems to be playing the role of a "number of discrete samples".

Please take a look at this request, I'm not an Wikipedia editor myself but as an user I struggled with this equation during a code implementation.

Thanks!

Fzigunov (talk) 00:18, 7 August 2016 (UTC)[reply]

Good point. I've replaced the definition of T under the equation by "T is the number of timepoints over which one wants to average" (instead of "T is the time..."). Hope that's ok? Qwfp (talk) 12:22, 7 August 2016 (UTC)[reply]

Adding Section on Applications in Environmental Engineering

Hello all,

I am thinking of adding to the experimental section to include environmental examples. If there is enough information I may make a new section!

Thank you! Matti1993 (talk) 19:45, 26 April 2017 (UTC)[reply]

Hi, I will add the relation between Mean Squared Displacement (MSD) and Variance-Related Diameter, which is another commonly used concept in Environmental Engineering, as well as some empirical models showing the variation of MSD or VRD in the environment.

Thanks! Lunj12 (talk) 20:47, 26 April 2017 (UTC)[reply]