---
tags: dispersion, minutes
---

# PlasmaPy Dispersion Meeting | Thursday 2021 January 21 at 14:00 PT / 17:00 ET

[](https://hackmd.io/-sOYoV4lQkim2rKfrAsQUQ)

### Video Conference Information
* Instant messaging: [Matrix](https://element.im/app/#/room/#plasmapy:openastronomy.org) and [Gitter](https://gitter.im/PlasmaPy/Lobby)
* [GitHub Minutes Repository](https://github.com/PlasmaPy/plasmapy-project/tree/master/minutes)
* [Dispersion Sub-directory](https://github.com/PlasmaPy/plasmapy-project/tree/master/minutes/dispersion)
* [PlasmaPy on GitHub](https://github.com/PlasmaPy/plasmapy) ([pull requests](https://github.com/PlasmaPy/plasmapy/pulls), [issues](https://github.com/PlasmaPy/plasmapy/issues))
* [PlasmaPy Enhancement Proposals on GitHub](https://github.com/PlasmaPy/PlasmaPy-PLEPs)
* [PlasmaPy Google Calendar](https://calendar.google.com/calendar?cid=bzVsb3ZkcW0zaWxsam00ZTlrMDd2cmw5bWdAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ)
* GitHub Project: None at the moment

## Agenda (please feel free to edit or add items)

1. Introductions
2. GitHub Project: None at the moment
3. Next dispersion PR
4. ...
5. Issues
1. [Issue 973](https://github.com/PlasmaPy/PlasmaPy/issues/973): Dispersion outline issue
2. ...
6. Pull requests in progress
1. [PR 932](https://github.com/PlasmaPy/PlasmaPy/pull/932): `two_fluid_dispersion_solution()`

## Attendees

* Erik
* Ramiz
* Nick
* Ben
* Tulasi

## Action Items

***Continuation Items***
> ***Erik***
> * do another review of PR 932
> * update and push changes to notebook associated w/ PR 932
> * open & merge PR for patch of `mass_density` and `Alfven_speed`
>
> ***Ramiz***
> * will create `plasmapy/dispersion/analytical/` in followup PR to PR 932
> * will open an Issue outlining the two fluid analytical solutions he's working on for PR 932 and the followup PRs
>
> ***Ramiz & Erik***
> * will think new name for `two_fluid_dispersion_soluntion()` in PR 932 (possibly `two_fluid_bellan_solution()`).

***Ramiz***
* Open next dispersion PR, which should include
* One more analytical soln
* Create `plasmapy.dispersion.analytical`

## Minutes

* **MEETINGS FROM NOW ON WILL STILL BE THURSDAY BUT CALLED FOR A WEEK PRIOR**
* **PR 932 is merged!!!**
* Next Dispersion PR(s)
* 1st PR
* Create `plasmapy.dispersion.analytical`
* Move `plasmapy/disperison/two_fluid_dispersion.py` into the analytical sub-package
* 2nd PR
* Add next analytical branch to `plasmapy.dispersion.analytical`
* Rename `plasmapy.dispersion.two_fluid_dispersion_solution` -> `plasmapy.dispersion.two_fluid_bellan_soln`
* 3rd PR
* Create factory function `two_fluid_solution()` (specific name can be chosen later)
* `two_fluid_solution()` should be defined in `plasmapy/dispersion/analytical/` and accessible via `plasmapy.dispersion`
* Add next analytical solution (which is a Branch of the Bellan soln)
* Create a factory function for the branches but not in this PR
* Time frame...thesis will consume most of Ramiz's time and this should be only a sanity break
* ...