# RelativisticRadiationTransport.jl -- Radiation transport in Minkowski space

**URL:** https://discourse.julialang.org/t/relativisticradiationtransport-jl-radiation-transport-in-minkowski-space/135652
**Category:** Package Announcements
**Created:** [February 14, 2026, 9:59pm UTC](https://discourse.julialang.org/t/relativisticradiationtransport-jl-radiation-transport-in-minkowski-space/135652 "2026-02-14T21:59:42Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![kschwenk](https://avatars.discourse-cdn.com/v4/letter/k/5f8ce5/32.png) [@kschwenk](https://discourse.julialang.org/u/kschwenk)
#### Post date: [February 14, 2026, 9:59pm UTC](https://discourse.julialang.org/t/relativisticradiationtransport-jl-radiation-transport-in-minkowski-space/135652/1 "2026-02-14T21:59:42Z")

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Hello Julia people!

I’ve started working on a relativistic ray tracer that I’ve called (maybe somewhat presumptuously) [RelativisticRadiationTransport.jl](https://gitlab.com/kschwenk/RelativisticRadiationTransport.jl).

Currently, its main claim to fame is that you can visualize some basic situations from special relativity.  
Maybe the relativistically inclined among you can have some fun playing around with it.  
You can find examples of what you can do with it [here](https://gitlab.com/kschwenk/lampa) and the example directory in the repo.  
It ain’t much, but… well: it ain’t much. 😉

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### Author: ![R.T.A.M](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/r.t.a.m/32/22289_2.png) [@R.T.A.M](https://discourse.julialang.org/u/R.T.A.M)
#### Post date: [February 16, 2026, 12:06pm UTC](https://discourse.julialang.org/t/relativisticradiationtransport-jl-radiation-transport-in-minkowski-space/135652/2 "2026-02-16T12:06:21Z")

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Hi!  
So this package is for visualising radiation in Minkowski space.  
I better look that up…one Wikipedia page later…  
So this module lets users explore things like 4 dimensions, light cones, curved spacetime?  
I’m totally lost, but thanks for the link to the examples, that helps understand what the concept is about.

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### Author: ![kschwenk](https://avatars.discourse-cdn.com/v4/letter/k/5f8ce5/32.png) [@kschwenk](https://discourse.julialang.org/u/kschwenk)
#### Post date: [February 16, 2026, 6:18pm UTC](https://discourse.julialang.org/t/relativisticradiationtransport-jl-radiation-transport-in-minkowski-space/135652/3 "2026-02-16T18:18:59Z")

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> [@R.T.A.M](#):
>
> So this package is for visualising radiation in Minkowski space.  
> I better look that up…one Wikipedia page later…  
> So this module lets users explore things like 4 dimensions, light cones, curved spacetime?

Basically yes, but (I hope) the eventual focus will be more on simulating the actual radiation transport, rather than “schematic” visualization.  
And curved spacetimes probably won’t be on the menu for a long time.

I have uploaded an additional example that may show a bit better what I have in mind:

[moving\_light.jl](https://gitlab.com/kschwenk/RelativisticRadiationTransport.jl/-/blob/f2b91dab2a91c0b1d7c108e9b4b4d9c9bdc1d911/example/moving_light.jl)

[moving\_light.ipynb](https://gitlab.com/kschwenk/lampa/-/blob/e449d30a01d39d50d4bbcb587a078cecfe602bb1/moving_light.ipynb)

For now the package is mostly gimmickry, but I’ve had some fun playing around with it, so I thought I’d post it here on the off chance somebody else finds it interesting.