@olaf@social.secret-wg.org
@olaf@social.secret-wg.org avatar

olaf

@olaf@social.secret-wg.org

‘Evangineer’(he/him), Day job on the intersection between digital technology and society, likes #music, #munching, #movies and more. - All toots on personal title, reblogs and boosts do not imply endorsement.
Moderates social.secret-wg.org
Matrix: https://social.secret-wg.org/@olaf:secret-wg.org

#fedi22, #digital, #society, #tinkering, #cybersecurity, #programming, #isoc, #GFCE

This profile is from a federated server and may be incomplete. Browse more on the original instance.

olaf, to random
@olaf@social.secret-wg.org avatar

I bought an assortment of resistors. It has 25 pieces of 0 Ohm.

Why and where, my kind fediferse friends, would one use those?

eb, to security
@eb@social.coop avatar

Unfolding now: https://news.ycombinator.com/item?id=39865810

An incredibly technically complex in xz (potentially also in libarchive and elsewhere) was just discovered. This backdoor has been quietly implemented over years, with the assistance of a wide array of subtly interconnected accounts:

The timeline on this is going to take so long to unravel

olaf,
@olaf@social.secret-wg.org avatar

@glyph @eb
This is where I hope that XZ's maintainer has sufficient friends in the community to make sure he is OK.

I also agree with @glyph

olaf, to random
@olaf@social.secret-wg.org avatar

https://armerding.medium.com/open-source-cofounder-calls-for-brave-new-egalitarian-post-open-world-36cd250476cb

with quotes from yours truly

olaf, to random
@olaf@social.secret-wg.org avatar

I just heard that time on the Internet stopped for a second. David Mills who invented the protocol by which the Internet keeps time passed away.

RIP

olaf, to random
@olaf@social.secret-wg.org avatar

"Duitsers eten over het algemeen graag vlees, "

https://www.take-a-trip.eu/nl/keulen/eten-en-drinken/

olaf, to random
@olaf@social.secret-wg.org avatar

Delegates should immediately return home!

Cop28 president says there is ‘no science’ behind demands for phase-out of fossil fuels https://www.theguardian.com/environment/2023/dec/03/back-into-caves-cop28-president-dismisses-phase-out-of-fossil-fuels?CMP=Share_iOSApp_Other

markmccaughrean, to Astronomy
@markmccaughrean@mastodon.social avatar

Morning.

Here it is, several thousand years in the making: the protostellar jet HH212 as seen in the infrared by .

We discovered this jet in 1993, glowing in the light of shocked molecular hydrogen at 2.12 microns, as gas emerges symmetrically at about 100 km/s from the two poles of a young protostar not far from the Horsehead Nebula in Orion.

Our new JWST image spans six wavelengths & is ten times sharper than any previous infrared image.

1/

olaf,
@olaf@social.secret-wg.org avatar

@markmccaughrean - nice thread, thanks (from an Astronomer who left the business in 96)

olaf, to random
@olaf@social.secret-wg.org avatar

A must read when you are about to retile your bathroom… make sure you order your monotiles from the Spectre series.

https://www.quantamagazine.org/a-brief-history-of-tricky-mathematical-tiling-20231030

jsq, to random
@jsq@mastodon.social avatar

deleted_by_author

    •
    olaf,
    @olaf@social.secret-wg.org avatar

    @jsq I want to see this guy type 3 key combos like ctrl-alt-del

    olaf, to random
    @olaf@social.secret-wg.org avatar

    Cooking is the art of carbonization and onions are its litmus test

    olaf,
    @olaf@social.secret-wg.org avatar

    @jens

    See there is a secret one has to know... Carbonization for the initiated. ;-)

    jpmens, to random
    @jpmens@mastodon.social avatar

    deleted_by_author

    •
    olaf,
    @olaf@social.secret-wg.org avatar

    @jpmens oh so it was your close friend. I am sad to see a classic retire, but how I enjoyed it (and so did Bert)

    danyork, to Nashville
    @danyork@mastodon.social avatar

    Okay.. the Bavarian Bierhaus is just a 17-minute walk from my hotel. I think this needs to be done tonight! 😃🥨🍺

    olaf,
    @olaf@social.secret-wg.org avatar

    @danyork Bavarian Bierhaus - sounds like a contradiction in terms.

    coffeegeek, to random
    @coffeegeek@flipboard.social avatar

    Did you know you can a Gaggia Classic Pro (or the new Pro Evo)?

    There's videos out there showing you how to do a hack with the Gaggia Classic pro (open the steam wand to reduce the grouphead pressure at the start of a shot).

    But you can also use the same trick to lower the ENDING pressure on your shot pulls, much like a spring lever machine.

    In fact, a deft hand can really control a declining pressure for better espresso shots. Own one? Try it!

    olaf,
    @olaf@social.secret-wg.org avatar

    @coffeegeek explain why decrease of pressure makes the shot better?

    djlink, to random
    @djlink@mastodon.gamedev.place avatar

    recorded a Windows 95 full disk defrag to soothe your timeline.

    video/mp4

    olaf,
    @olaf@social.secret-wg.org avatar

    @djlink ohhhh thank you far this. It brings back memories of a hypnotic afternoons

    markmccaughrean, to Netherlands
    @markmccaughrean@mastodon.social avatar

    One of a pair of red admiral butterflies (Vanessa atalanta) in the garden this morning, supping from the ivy flowers alongside many bees.

    Quite possibly autumn migrants, as more northerly latitudes are growing colder, & perhaps a male / female pair looking to mate.

    🦋
    🇳🇱
    📷
    🪰

    olaf,
    @olaf@social.secret-wg.org avatar

    @markmccaughrean I bow deep. This is impressive photography

    pikuma, to random
    @pikuma@mastodon.gamedev.place avatar

    If you're programming a game where a boat moves through water, you might be tempted (as I would) to change the V-shape angle of the waves behind the boat based on how fast the boat was moving!

    What if I told you that that V-shaped angle is always 19.47°, regardless of how fast the boat is travelling? 😱

    This pattern even holds true for a duck traversing a pond. 🦆

    The envelope of these waves stands at a fixed angle, and the wake has a characteristic feathered pattern.

    olaf,
    @olaf@social.secret-wg.org avatar

    @pikuma under the assumption that the duck is in water at roughly room temperature and 1bar pressure. A duck in mercury would be a different story. (Mostly because the duck would die)

    geekmomprojects, to random
    @geekmomprojects@mastodon.social avatar

    Finally got to meet @maketvee in person since he's visiting Los Angeles, and to make things even better, got to have a small maker get together with @ItsMrJP and @Jorvon_Moss. It was a fun and nerdy evening - the absolute best kind!

    olaf,
    @olaf@social.secret-wg.org avatar

    @geekmomprojects @maketvee @ItsMrJP @Jorvon_Moss oh that must have been fun, started following you all in search of inspiring tinker things.

    timbray, to random
    @timbray@cosocial.ca avatar

    Ooooh, news from the ΛCDM-vs-MOND front, my favorite open question in all of science. I lack the math/physics competence for my own opinion to be worth anything, but I seriously enjoy my spectator’s view: https://tritonstation.com/2023/08/28/wide-binary-results-favoring-mond/

    olaf,
    @olaf@social.secret-wg.org avatar

    @timbray

    Ohhh this brings back good memories …

    For context: CDM is cold dark matter, MOND is Modified Newtonian Dynamics. Both are ways to explain the discrepancy between mass determined from rotation curves of galaxies, and mass determined from light curves.

    indeed.

    mattblaze, to random
    @mattblaze@federate.social avatar

    Apparently Duo (the widely used 2FA service) is having a “systemwide outage”.

    olaf,
    @olaf@social.secret-wg.org avatar

    @mattblaze

    2FA service is [rapidly becoming] infrastructure critical to the functioning of the Internet. It is a service that benefits greatly from a 2 sided network effect and is (therefore) consolidated. That gives me pause.

    annaleen, to random
    @annaleen@wandering.shop avatar

    What is everybody using as their link organizing app? Asking because I use Evernote basically for creating archives of links for research that I'm doing. And now Evernote is going away ...

    olaf,
    @olaf@social.secret-wg.org avatar

    @danyork

    Dan, I have a self-hosted Joplin server, howler if you want an account to try.

    mcnees, to random
    @mcnees@mastodon.social avatar

    Physicist John Archibald Wheeler was born in 1911.

    A titan of 20th century science, Wheeler introduced the S-Matrix; developed the first general theory of fission with Neils Bohr; coined many terms (”worm hole” and “it from bit”) and popularized others (“black hole”); and trained Feynman, Everett, Thorne, and a host of others.

    An older wheeler standing in front of a chalkboard. His hands are clasped. The diagram behind him shows a direct path from point A to point B labeled “classical,” and a wave emanating from A and passing to B labeled “quantum.”
    Black and white photo of Albert Einstein, Hideki Yukawa, John Wheeler, and Homi Bhabha walking through the woods near the Institute for Advanced Study. The last three men are wearing suits, but Einstein has on khakis and a frumpy cardigan – king move by the goat.

    olaf,
    @olaf@social.secret-wg.org avatar

    @mcnees

    He was author of the impressive heavy, black, standard work ‘Gravitation’. A book that I remember had great, almost mystical attraction. But one I never (regrets, regrets) mastered.

    olaf,
    @olaf@social.secret-wg.org avatar

    @mcnees yes this on (just noticed this was a thread)

    nemobis, to mastodon
    @nemobis@mamot.fr avatar

    What happened when I emailed 3000 admins about a critical vulnerability
    https://federicoleva.eu/en/posts/2023/mastodon-vulnerability-emails/

    olaf,
    @olaf@social.secret-wg.org avatar

    @nemobis an excellent example of collaborative security…

    vicgrinberg, to Astro
    @vicgrinberg@mastodon.social avatar

    Took a while, but the ESA science booth is up!

    olaf,
    @olaf@social.secret-wg.org avatar

    @vicgrinberg the ESA booth has launched, seems more appropriate

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