Fin och informativ visualisering av Per Axbom.

Have you also been in the situation where you need to write up your latest Raman spectra of ZnO?
And just exasperated at the thought of typing up all those mode assignments using LaTeX math notation (because honestly, it looks good).

I created this macro, \nonresmode{E2h}[E2l][long][diff], to make it easier to write.
Now all I have to do is write, for example, \nonresmode{A1LO}, and LaTeX does all the work and produces a nicely typeset label.

Here is some example LaTeX source:

Non-resonant Raman with green laser excitation (\qty{532}{\nm}).
All the observed Raman modes could be assigned to either a fundamental mode
(\nonresmode{E2l}[][long], \nonresmode{A1TO}, \nonresmode{E1TO}, \nonresmode{E2h}[][long],
\nonresmode{E1LO}, \nonresmode{A1LO}),  an overtone (\nonresmode{2E2l}[][long], \nonresmode{2E1LO},
\nonresmode{2A1LO}), a sum mode (\nonresmode{E2h}[E2l][long], \nonresmode{E2h}[2E2l][long],
\nonresmode{2E2h}[E2l][long], $2(\nonresmode{E2h}[E2l][long])$) or
a difference mode (\nonresmode{E2h}[E2l][long][diff]).

and the resulting output:

And here is the macro definitions (to avoid repeating the main "correspondence table" between the short-codes and the typeset text,
I opted to define multiple functions. I also made use of the beautiful macro by egreg that defines a case-like environment:

% defines a case environment
% code taken from a TeX.SE answer by egreg
% https://tex.stackexchange.com/a/451094/10824
% fantastic piece of code, works beautifully, for an arbitrary number of cases
\ExplSyntaxOn
\NewExpandableDocumentCommand{\stringcase}{mO{}m}{%
   \str_case_e:nnF { #1 } { #3 } { #2 }
}
\ExplSyntaxOff

% not meant to be exposed to user
\NewDocumentCommand{\NonResonantModesShort}{m}{%
   \stringcase{#1}[\textbf{??}]{%
      % note, \text{} inside math environment will obey font settings from
      % surrounding environment (e.g., bold) but \mathrm{} will not which
      % makes it better for this purpose
      % {shortcode}{LaTeX typeset text}
      {E2l}{\ensuremath{E_{2\mathrm{l}}}}%
      {A1TO}{\ensuremath{A_{1(\mathrm{TO})}}}%
      {E1TO}{\ensuremath{E_{1(\mathrm{TO})}}}%
      {E2h}{\ensuremath{E_{2\mathrm{h}}}}%
      {E1LO}{\ensuremath{E_{1(\mathrm{LO})}}}%
      {A1LO}{\ensuremath{A_{1(\mathrm{LO})}}}%
      {2E2l}{\ensuremath{2E_{2\mathrm{l}}}}%
      {2E2h}{\ensuremath{2E_{2\mathrm{h}}}}%
      {2E1LO}{\ensuremath{2E_{1(\mathrm{LO})}}}%
      {2A1LO}{\ensuremath{2A_{1(\mathrm{LO})}}}%
   }%
}

% not meant to be exposed to user
\NewDocumentCommand{\NonResonantModesLong}{m}{%
   \stringcase{#1}[\textbf{??}]{%
      {E2l}{\ensuremath{E_{2\mathrm{(low)}}}}%
      {A1TO}{\ensuremath{A_{1(\mathrm{TO})}}}%
      {E1TO}{\ensuremath{E_{1(\mathrm{TO})}}}%
      {E2h}{\ensuremath{E_{2\mathrm{(high)}}}}%
      {E1LO}{\ensuremath{E_{1(\mathrm{LO})}}}%
      {A1LO}{\ensuremath{A_{1(\mathrm{LO})}}}%
      {2E2l}{\ensuremath{2E_{2\mathrm{(low)}}}}%
      {2E2h}{\ensuremath{2E_{2\mathrm{(high)}}}}%
      {2E1LO}{\ensuremath{2E_{1(\mathrm{LO})}}}%
      {2A1LO}{\ensuremath{2A_{1(\mathrm{LO})}}}%
   }%
}

% not meant to be exposed to user
\NewDocumentCommand{\NonResonantModesLogic}{m O{short}}{%
   \IfNoValueTF{#2}{%
      % arg #2 (optional) not given, proceed as "short"
      \NonResonantModesShort{#1}%
   }{%
      % arg #2 (optional) was given, check if it is "long"
      \ifthenelse{\equal{#2}{long}}{%
         % "long" was given
         \NonResonantModesLong{#1}%
      }{%
         % arg was given, but is not equal to "long"
         % check if it is "short"
         \ifthenelse{\equal{#2}{short}}{%
            \NonResonantModesShort{#1}%
         }{%
            % arg was neither "long" nor "short", something else
            \NonResonantModesShort{}%
         }%
      }%
   }%
}

% Non-resonant Raman modes of ZnO
% \nonresmode{E2h}[E2l][long][diff]
% Use \nonresmode like this:
% \nonresmode{E2l}              => E2l
% \nonresmode{E2l}[][long]      => E2low
% \nonresmode{}                 => ??
% \nonresmode                   => ERROR
% \nonresmode{E2l}[E2h]         => E2l+E2h
% \nonresmode{E2l}[E2h][][diff] => E2l-E2h
% \nonresmode{E2l}[E2h][long]   => E2low + E2high
% only specify optional arguments if necessary, i.e.,
% please don't do \nonresmode{E2l}[][][], but please do \nonresmode{E2l}
% remember, optional arg "o" will supply the special -NoValue- marker if not given
% the arg O{sum} is an optional arg with the default value "sum"
\NewDocumentCommand{\nonresmode}{m o O{short} O{sum}}{%
   \IfNoValueTF{#2}{%
      % no arg #2 was given, which means we are typesetting a single mode
      % if no arg #2 was given, then we can disregard #4
      \IfNoValueTF{#3}{%
         % this way, if #3 was not given, we avoid passing the special -NoValue- marker
         \NonResonantModesLogic{#1}%
      }{%
         % if #3 was given, pass it on, unless it was empty
         \ifthenelse{\isempty{#3}}{%
            \NonResonantModesLogic{#1}%
         }{%
            \NonResonantModesLogic{#1}[#3]%
         }%
      }%
   }{%
      % If optional arg #2 was given and is empty, perform the same code as if -NoValue-
      \ifthenelse{\isempty{#2}}{%
         \IfNoValueTF{#3}{%
            % this way, if #3 was not given, we avoid passing the special -NoValue- marker
            \NonResonantModesLogic{#1}%
         }{%
            % if #3 was given, pass it on, unless it was empty
            \ifthenelse{\isempty{#3}}{%
               \NonResonantModesLogic{#1}%
            }{%
               \NonResonantModesLogic{#1}[#3]%
            }%
         }%
      }{%
         % if #2 is not -NoValue- nor empty, then just assume that it is one of the mode shortcodes
         % (we don't try to check that it is in fact part of that set)
         % But first, determine if we are writing "sum" or "diff" modes
         % (note that we assume that #4 has a value, since it is the last arg we never expect it%
         % to be given explicitly empty)
         \ifthenelse{\equal{#4}{diff}}{%
            % Since #4 has a default, we can simplify this if-else to only check for "diff"
            % and we can then assume that the else-clause matches "sum"
            % But note that arg #3 may have been given explicity empty, [], thus overriding the default
            % so we must check for that
            \ifthenelse{\isempty{#3}}{%
               % Note, to get consistent spacing around the +/- sign whether the
               % call to \nonresmode{} is surrounded by math mode or not, it is
               % good to surround everything in ensuremath{} here
               % Also, for "short" mode, I want to kill the space surrounding the +/- sign
               % (to keep it compact, which is probably what the user wants in "short" mode)
               \ensuremath{\NonResonantModesLogic{#1}{-}\NonResonantModesLogic{#2}}%
            }{%
               \ifthenelse{\equal{#3}{long}}{%
                  \ensuremath{\NonResonantModesLogic{#1}[#3]-\NonResonantModesLogic{#2}[#3]}%
               }{%
                  \ensuremath{\NonResonantModesLogic{#1}{-}\NonResonantModesLogic{#2}}%
               }%
            }%
         }{%
            \ifthenelse{\isempty{#3}}{%
               \ensuremath{\NonResonantModesLogic{#1}{+}\NonResonantModesLogic{#2}}%
            }{%
               \ifthenelse{\equal{#3}{long}}{%
                  \ensuremath{\NonResonantModesLogic{#1}[#3]+\NonResonantModesLogic{#2}[#3]}%
               }{%
                  \ensuremath{\NonResonantModesLogic{#1}{+}\NonResonantModesLogic{#2}}%
               }%
            }%
         }%
      }%
   }%
}

It's all the rage these days. Let's collect the ones we've heard about so far.

Text

• GPT-4, the latest large-language model (LLM) by OpenAI.
• GPT3 (known as ChatGPT), the previous generation LLM by OpenAI.
• Falcon 40B, FOSS LLM. Video review by Sentdex.
• https://chat.lmsys.org
• https://github.com/declare-lab/flan-alpaca
• https://scifilogic.com/foss-llm-that-you-can-run-your-pc/
• https://www.technologyreview.com/2022/07/12/1055817/inside-a-radical-new-project-to-democratize-ai/
• https://www.databricks.com/blog/2023/04/12/dolly-first-open-commercially-viable-instruction-tuned-llm
• Elicit AI-powered science paper search tool (not FOSS, behind sign-up wall)

Image

• Scribble Diffusion, turn a scribble (and an associated text prompt) into a refined image. Powered by ControlNet. Simple to use, generated images 512px square and easy to download. Seems to work well in Chromium, less so in Firefox.
• Midjourney, generative AI service that creates images from language prompts. How to use Midjourney, Tom's Guide.
• https://drawfast.tldraw.com, via @simon@simonwillison.net (service has been shuttered!)

I'm well aware there are like a 100 more, will add to this list as I get time.
On a related note, it's too bad Shaarli does not allow others to edit or at least comment on posts (but see this post regarding developments).
But if you really want, I guess you could open the post on its own page (see permalink below) and annotate that page using Hypothes.is.

Links and notes

• https://www.wired.com/story/how-chatgpt-works-large-language-model
• https://changelog.com/podcast/578 What exactly is Open Source AI?

This unofficial site let's you explore the In Our Time archive by topic and year.
Via kottke.org.

Could we cross-reference objects (tables, figures, etc.) that exist in the attached papers (whose code-base is foreign to the thesis) while also having these cross-references target the appropriate paper in the List of Papers, with the aid of the cleveref, caption and hyperref packages?

To clarify, for a compilation PhD thesis, where the thesis itself is created using LaTeX, but where the attached papers (hence the compilation part in the thesis) may or may not have been created using LaTeX (even if they were created using LaTeX, their codebase is not available to the thesis at runtime).

So we need to setup some sort of static list of manually created \label{}s, that should occupy a counter and namespace separate from the thesis' own figures, tables, etc.

Preamble, literally

Uppsala university has a thesis template (my version, LuaLaTeX-based) that defines a listofpapers environment (the details of which are not important right now) that allows us to create a List of Papers and easily assign a label for each paper, like this:

\begin{listofpapers}
   \item\label{P1}
   Li, C.; Ahmed, T.; Ma, M.; Edvinsson, T.; Zhu, J. %
   Photocatalytic properties of ZnO/CdS nanoarrays\\%
   \item \label{P2}
   Ahmed, T.; Edvinsson, T. %
   Photocatalytic activity of ultrasmall ZnO\\%
\end{listofpapers}

The above works in conjunction with the following definitions in the preamble:

\usepackage{cleveref}
\crefname{listofpapersc}{\textbf{\textsc{paper}}}{\textbf{\textsc{papers}}}
\Crefname{listofpapersc}{\textbf{\textsc{paper}}}{\textbf{\textsc{papers}}}
\creflabelformat{listofpapersc}{#2\textbf{\textsc{#1}}#3}

to give a nicely formatted Paper 1 (in small-caps in this case) in the text when we issue \cref{P1}.

Solution: new floating environment and a custom cleveref format per paper

I have limited time to type this up, so here goes.

\usepackage{newfloat} % for the DeclareFloatingEnvironment cmd
\usepackage[nameinlink]{cleveref}
\crefname{listofpapersc}{\textbf{\textsc{paper}}}{\textbf{\textsc{papers}}}
\Crefname{listofpapersc}{\textbf{\textsc{paper}}}{\textbf{\textsc{papers}}}
\creflabelformat{listofpapersc}{#2\textbf{\textsc{#1}}#3}

\DeclareFloatingEnvironment[within=none]{tableP1}
\crefformat{tableP1}{\textsc{#2tab.~#1#3}~of\space\cref{P1}}
\Crefformat{tableP1}{\textsc{#2Tab.~#1#3}~of\space\cref{P1}}
\crefrangeformat{tableP1}{\textsc{tabs.~#3#1#4--#5#2#6}~of\space\cref{P1}}
\Crefrangeformat{tableP1}{\textsc{Tabs.~#3#1#4--#5#2#6}~of\space\cref{P1}}
\crefmultiformat{tableP1}{%
   \scshape tabs.~#2#1#3}{%
   \:\&\:#2#1#3~\textnormal{of\space}\cref{P1}}{%
   , #2#1#3}{%
   \:\&\:#2#1#3~\textnormal{of\space}\cref{P1}}
\Crefmultiformat{tableP1}{%
   \scshape Tabs.~#2#1#3}{%
   \:\&\:#2#1#3~\textnormal{of\space}\cref{P1}}{%
   , #2#1#3}{%
   \:\&\:#2#1#3~\textnormal{of\space}\cref{P1}}
\crefrangemultiformat{tableP1}{%
   \scshape tabs.~#3#1#4--#5#2#6}{%
   \:\&\:#3#1#4--#5#2#6~\textnormal{of\space}\cref{P1}}{%
   , #3#1#4--#5#2#6}{%
   \:\&\:#3#1#4--#5#2#6~\textnormal{of\space}\cref{P1}}
\Crefrangemultiformat{tableP1}{%
   \scshape Tabs.~#3#1#4--#5#2#6}{%
   \:\&\:#3#1#4--#5#2#6~\textnormal{of\space}\cref{P1}}{%
   , #3#1#4--#5#2#6}{%
   \:\&\:#3#1#4--#5#2#6~\textnormal{of\space}\cref{P1}}

and repeat the last block (everything down from DeclareFloatingEnvironment) for figureP1, and for tableP2, figureP2, etc.

And then, for the pièce de résistance, in one fell swoop we abuse both the listofpapers environment and the phantomcaption command to create the labels that our cross-references will target:

\begin{listofpapers}
   \item\label{P1}
   Li, C.; Ahmed, T.; Ma, M.; Edvinsson, T.; Zhu, J. %
   Photocatalytic properties of ZnO/CdS nanoarrays\\%
      \bgroup
      \captionsetup{type=figureP2}
      \phantomcaption\label{fig:P1-schematic}
      \phantomcaption\label{fig:P1-mechanism}
      [... more figure labels as necessary ...]
      \egroup
      \bgroup
      \captionsetup{type=tableP2}
      \phantomcaption\label{tab:P1-parameters}
      \phantomcaption\label{tab:P1-rates}
      [... more table labels as necessary ...]
      \egroup
   \item \label{P2}
   Ahmed, T.; Edvinsson, T. %
   Photocatalytic activity of ultrasmall ZnO\\%
\end{listofpapers}

captionsetup needs to be constrained by an environment (the manual suggests a minipage, which works fine but occupies a little bit of vertical space on the page), and it turns out group works in this context and has the added benefit of occupying no space in the List of Papers.

With that, we can simply type \cref{fig:P1-schematic} in the source to produce a nicely formatted cross-reference in the output document. The use of small-caps, abbreviated label names, and the trailing of paper X is my way to make these references contrast with the normal, in-thesis cross-references.

Here's an example of how the typeset cross-references look like:

Links and notes

• https://tex.stackexchange.com/questions/383587/plural-cref-with-custom-unnumbered-subsections
• https://tex.stackexchange.com/questions/597048/cleveref-fig-for-citing-multiple-subfigures-from-the-same-figure-but-figs
• https://gist.github.com/ummels/3428745
• https://reddit.com/r/LaTeX/comments/5gv6al/reference_multiple_list_items_in_single/
• the cleveref manual
• the caption and subcaption manuals

A small wrinkle when using bib2df together with bib2gls: the latter does not tolerate empty cross-reference fields.

bib2df::df2bib() takes a tibble and generates the entries.bib file, and since the tibble by necessity contains one column for each field, any entries with empty see fields get converted by bib2df::df2bib() to see={}. The presence of any glossary entry with an empty see={} field causes bib2gls to fail:

Processing resource thesis-1.glstex.
Parsing fields for entry 'absorption_coefficient'
Checking field aliases for absorption_coefficient.
Value=>user1={}
>> name={{}\ensuremath{\alpha}}
=>> name={{}\ensuremath{\alpha}}
>> first={absorption coefficient, \ensuremath{\alpha}}
=>> first={absorption coefficient, \ensuremath{\alpha}}
>> text={absorption coefficient}
=>> text={absorption coefficient}
>> description={absorption coefficient}
=>> description={absorption coefficient}
>> user1={}
=>> user1={}
>> see={}
=>> see={}
Checking cross-references for: absorption_coefficient
Field alias not set.
Error: EOFException
com.dickimawbooks.texparserlib.TeXParser.popStack(TeXParser.java:2635)
com.dickimawbooks.texparserlib.TeXObjectList.popArg(TeXObjectList.java:1294)
com.dickimawbooks.texparserlib.TeXObjectList.popArg(TeXObjectList.java:1275)
com.dickimawbooks.bib2gls.Bib2GlsEntry.initSeeRef(Bib2GlsEntry.java:4710)
com.dickimawbooks.bib2gls.Bib2GlsEntry.initCrossRefs(Bib2GlsEntry.java:4694)
com.dickimawbooks.bib2gls.GlsResource.processBibList(GlsResource.java:6722)
com.dickimawbooks.bib2gls.Bib2Gls.process(Bib2Gls.java:2706)
com.dickimawbooks.bib2gls.Bib2Gls.main(Bib2Gls.java:6616)

As you can see, other fields may be empty, but not the see field.

This is not a bug in either bib2df:: or bib2gls, and I don't expect either project to "fix" this issue. The former is not meant for and has no notion of glossaries, and the latter is not really expecting us to be generating the .bib file, so why should there be empty see fields?

To work around this I suggest removing all lines with see={} fields from the entries.bib file, here an example using sed:

sed -i '"/[Ss]ee\s*=\s*{}/d" entries.bib

I simply added this sed command to the R chunk that calls bib2df::df2bib().
I should probably add that my reason for generating the glossary bib-file from R in the first place was to make use of the excellent constants library.

Notes and links

This behaviour was observed on Ubuntu 22.04, R 4.1.3, TeXLive 2022, glossaries-extra 1.50, bib2gls 3.2, bib2df 1.1.1.

• https://www.dickimaw-books.com/software/bib2gls/
• https://github.com/nlct/bib2gls
• https://github.com/ropensci/bib2df/
• https://github.com/r-quantities/constants

A work in progress. Over 700 pages, encompassing band structure, symmetry and much more.
By Daniel Arovas, UC Santa Barbara.

Lectures on theoretical physics from Cambridge University professor David Tong.

David Tong at Cambridge is a gifted educator and communicator who has written lecture notes that span a wide swath of the physics curriculum, from introductory material on mechanics through advanced graduate-level treatments of quantum field theory. Truly, these are a fantastic resource, made freely available.

Link and quote thanks to Douglas Natelson (nanoscale views).

I particularly like his notes on solid state physics (which contains links to other resources).

Cyklar och tillbehör

• https://sportson.se
• https://www.cykloteket.se
• https://www.cykelgross.se (butik och verkstad i Uppsala)
• https://www.velotek.se (butik och verkstad i Uppsala)
• https://www.skitotal.se (butik i Uppsala)
• Cykel-Viktor (verkstad och butik i Uppsala)
• http://stationsgatancykel.com (verkstad och butik i Uppsala)
• http://www.leffescykel.se (verkstad och butik i Uppsala)
• https://www.eriksbergscykel.se (verkstad och butik i Uppsala)
• http://cykelnestors.se (verkstad och begagnade cyklar i Uppsala)
• Rosendal cykel (verkstad och butik i Uppsala)
• https://www.uppsalareturcyklar.se (begagnade cyklar i Uppsala)
• https://jarlacykel.se (butik i Vasastan)
• https://www.cykelcity.se (butik på Södermalm)
• https://cykelspecialisten.com (butik på Södermalm)
• https://www.urbanbikewear.com (verkstad och butik på Södermalm)
• https://www.cykelstaden.se (butik i Vasastan)
• https://www.cykelverket.se (butik på Kungsholmen)
• https://morencykel.se (butik i Kärrtorp), lastcyklar (video)
• https://velo-oxygen.se (butik i Sickla)
• https://enskede-cykel.se
• https://www.tcmcykel.se (butik i Tyresö)
• https://eci.nu (butik och verkstad i Älta)
• https://cykelhuset.com (butik i Upplands Väsby)
• https://www.erlan.se (butik i Varberg)
• https://cykel-experten.se (butik i Malmö)
• https://www.rosebikes.se
• https://www.bikester.se
• https://www.cykelkraft.se
• https://www.cykelringen.se
• https://xxl.se (säljer allt möjligt, även cyklar och tillbehör)
• https://teamsportia.se (säljer allt möjligt, även cyklar och tillbehör)
• https://andtherev.com (bespoke bicycle builder, Södermalm)
• https://www.bike-discount.de (prices in EUR, ships to SWE)
• https://www.bike-components.de (prices in EUR, ships to SWE)
• https://www.bike24.com (prices in EUR, ships to SWE)
• https://www.chainreactioncycles.com (prices in GBP/EUR, ships to SWE)
• https://www.elektrofahrrad24.de (e-bikes and accessories)
• https://www.rei.com (sports gear and clothing, also bikes)
• https://www.bricklanebikes.co.uk (bespoke bicycle builder, London)

Bara tillbehör

• Gusti Läder: sadlar, väskor, handtag, och dylikt
• https://www.dutchbikebits.com (tillbehör, prices in EUR, ships to SWE)

Bara verkstad

• http://www.hokarangenicentrum.se/olssons-cykelverkstad
• https://bagarmossenscykelkok.se (ideell förening, gör-det-själv verkstad i Bagarmossen)

Andras listor

• Bästa sajterna för cykel och tillbehör - Cyklistbloggen
• https://cykelpendlare.blogspot.com/p/blog-page_31.html

Inte en rekommendation av någon butik - gör din egen bedömning innan du handlar!

The de-facto industry standard chart from the US National Renewable Energy Laboratory now published as an interactive web app.

• https://www.nrel.gov/pv/interactive-cell-efficiency.html
• https://energypost.eu/comparing-the-efficiency-and-progress-of-the-5-leading-solar-pv-cell-technologies/

• I figured out how to rename the headers, which involved editing longtab definitions, always a little tricky...
• Breaking issue with bib2gls v2.9, fixed by bib2gls author. Same issue on git.solarchemist.se. Related missing field "name" warning.

but more work remains to be done.

Good resources:

• https://www.dickimaw-books.com/software/bib2gls/
• https://dickimaw-books.com/faq.php
• https://dickimaw-books.com/featuretracker.php
• https://dickimaw-books.com/bugtracker.php

In the form of an T and O map.

Via kottke.org.

I wanted to create an ASCII art "bismillah" for use in the terminal.
Found this beautiful calligraphy by Nuria Garcia Masip. After cropping it, rotating it slightly and making the background monochromatic, I tried the ascii-image-converter by Zoraiz Hassan, and it worked great with the --braille flag:

This converter tool was really easy to install (just run the binary), and the output was automatically resized to fit the terminal window size, which was a convenient feature.

I discovered some other ASCII art CLI tools (never tested them though):

• https://github.com/user-simon/asciify
• https://github.com/tzvetkoff/im2a
• https://pypi.org/project/ascii-art-cli/
• http://dahtah.github.io/imager/ascii_art.html
• https://coolbutuseless.github.io/package/r64/articles/ascii.html

The website is a collaboration between two Dutch data science centers.
Should in my opinion also mention Gitea or Codeberg under suggested version control repositories, but otherwise good advice all around!

Det här var ju goda nyheter!

34 svenska myndigheter (inom ramen för eSam och dess projekt digital samarbetsplattform, dSam) har tagit tydlig ställning för e-tjänster med hög säkerhet, garanterad suveränitet, öppen källkod och öppna standarder.

https://www.esamverka.se/aktuellt/nyheter/nyheter/2022-11-23-slutleverans-fran-projektet-digital-samarbetsplattform.html

الحلوة دي performed by the Ayoub Sisters. 4 min video.
As always, you should watch youtube videos from a libre frontend.

In Engine Trouble, an animation by Nate Milton, Krulwich shares how Earth’s delicate balance was transformed by the invention of the modern engine.

Nice, informative video. 7 min long.

Via https://thekidshouldseethis.com/post/engine-trouble-robert-krulwich-video

Via https://scholar.social/@egonw/109257359432457838
Also a PeerTube instance.

Riksdagen har beslutat att införa in- och utpasseringskontroller med metalldetektor vid högskoleprov från och med hösten 2023. Kontrollen ska utföras av ordningsvakter, och om det finns särskilda skäl kan en kroppsvisitation göras.

Förslaget innebär att samtliga provdeltagare utom personer under 15 år ska kontrolleras vid in- eller utpassering till och från de lokaler där provet skrivs och där kontroller upprättats.

Jag tycker det här är ett mycket olyckligt beslut. Givetvis behöver fusk stävjas, men det här är helt fel väg att gå. Högskoleprovet är för många gymnasister en av de första kontakterna med högskolan. Det här är en kraftig (och sen) överreaktion från riksdagen som kommer sända helt fel signaler om högskolans roll i samhället till framtida studenter.

https://www.riksdagen.se/sv/dokument-lagar/arende/betankande/in--och-utpasseringskontroller-vid-hogskoleprovet_H901UbU26

Find a Fediverse server to sign up for, find one close to you!

A site that shows Fediverse servers status. Cool.

This unofficial guide to the Fediverse is also really good
https://fedi.tips

More good introductions to the Fediverse keep popping up:

• https://fediverse.info
• https://fedidb.org
• https://axbom.com/fediverse
• https://wiki.konstellationen.org/sv/guider/mastodon-hitta-folk
• https://fedi.tips/how-do-i-find-accounts-to-follow-on-mastodon-and-the-fediverse-how-do-i-find-my-friends