Tootfinder

Multi-wavelength observations of substructures in solar flare ribbons
Vishal Singh, Eamon Scullion, Gert J. J. Botha, Natasha L. S. Jeffrey, Malcolm Druett, Gerry Doyle, Chris Nelson, Aidan O'Flannagain, Alex G. M. Pietrow
https://arxiv.org/abs/2507.01169

Multi-wavelength observations of substructures in solar flare ribbons
Solar flare ribbons are features in the lower atmosphere that show enhanced emission intensity, particularly noticeable in H$α$ and EUV images of the transition region and upper chromosphere. In this study, we provide observational evidence that the flare ribbons are composed of a large number of coherent sub-structures that we call \textit{riblets}. Our observations, taken with the Swedish 1-m Solar Telescope / CRisp Imaging Spectro-Polarimeter (SST/CRISP) instrument, focused on an X1.5-class…

I’ve been hungry for seeing these days, hungry especially for color—wild, deeply saturated, mood-altering color. It has me looking up—as I always do when I’m lost—at the sky. Celeste blue. Blue of infinite depth. Ultra-blue.
https://salrandolph.substack.com/p/ways-of…

Ways of Seeing: Blue
Taking inspiration from Maggie Nelson's book, Bluets, this Ways of Seeing encourages you to take the color blue as your oracle and guide.

On the genericity of irreducible subfactors
Yoonkyeong Lee, Brent Nelson
https://arxiv.org/abs/2506.01838 https://arxiv.org/pdf/2506.…

On the genericity of irreducible subfactors
We show that finitely generated irreducible $\mathrm{II}_1$ subfactors are generic in the following sense. Given a separable $\mathrm{II}_1$ factor $M$ and an integer $n\geq 2$, equip the set of $n$-tuples of self-adjoint operators in $M$ with norm at most $1$ with the metric $d(x,y) = \max_{1\leq i \leq n} \|x_i - y_i\|_2$. Then the set of $n$-tuples that generate an irreducible subfactor of $M$ forms a dense $G_δ$ set in this metric space. On the way to proving this result, we show…

One of my neighborhood restaurants uses static QR codes for ordering at each table, with no account or card required. Seems like a really bad idea.

Calamus 15 O drops of me!
It's a remarkably morbid poem for Whitman, literally about blood dropping from wounds, corrupting his poetry.
stain every song I sing, every word I say, bloody drops
But he turns this blood into a sort of virtue that infuses his poem, starting with an inversion. It's not "saturate yourself with the drops". Instead it's saturate them with yourself.
Saturate them with yourself, all ashamed and wet,
Glow upon all I have written or shall write, bleeding drops,
Let it all be seen in your light, blushing drops.
I can make a case for a queer reading of recognizing gay shame and overcoming it. To take the stigma of homosexuality and turn it into a virtue, "let it all be seen in your light".
But I think I may be out on a limb with that interpretation. Whitman's not typically a writer about shame. And I think "gay shame" doesn't apply well as a concept in the 1850s, that's a malady that comes with a backlash against modern gay identity.

The dumpling place by my house has unsecured QR codes that immediately print out in the kitchen, no login or card required. Seems like a bad idea.

Calamus 16 Who is now reading this?
A funny little poem, omitted in later editions. On the surface it's a challenge to the reader and a chance for Whitman to establish himself as self-aware. Claiming his own flaws.
But the text drips with some latent queer meaning
as if I do not secretly love strangers!
(O tenderly, a long time, and never avow it ;)
A secret love that you can never avow? Hello! At least it's tenderly and a long time.
This seems as good a time as any to link Whitman's Boys, a good recent piece considering Whitman as a queer man and what that means to us in current times. It's a nice overview of some queer theory and is even-handed.

A quick visualization of the Yuba River at highway 49: temperature and flow. Local wisdom is July 4 is when it's safe to swim and that seems about right on the graphs.
I knocked this together with an AI so I'm not 100% sure the visualization is correct. More notes here.

Choose one!
Yes that seems perfectly normal
No I am not old
That's racist.