Delmar Larsen

Professor of Chemistry, Ultrafast Laser Spectroscopist, Founder and Director of LibreTexts, father of two daughters, two apathetic cats, and two dumb dogs.

[Delmar Larsen @LibreTexts]

LibreTexts knows that we must first listen to and acknowledge how our colleagues and students have endured discrimination and the profound and lasting effects on them. We cannot let this time pass without change.

See a fuller statement at our blog:
https://t.co/T8d5gNSpf0

[Open Education Global @OpenEdGlobal]

#Tomorrow

🏎️ Pop the hood on OER! @LibreTexts founder Delmar Larsen demos ADAPT live — Tue April 14, 11:00 PDT. Open-source homework, Learning Trees & more. Free to attend. 🔧

🎓 Register now: https://t.co/APpvTDzbJy #oeglobal

#openeducation #OER

[Delmar Larsen @LibreTexts]

I am happy to discuss ADAPT, the homework platform and question bank for the LibreVerse next week for OEG's Under the Hood series.

[Open Education Global @OpenEdGlobal]

#SaveTheDate

🏎️ Pop the hood on OER! @LibreTexts founder Delmar Larsen demos ADAPT live — Tue April 14, 11:00 PDT. Open-source homework, Learning Trees & more. Free to attend. 🔧

🎓 Register now: https://t.co/amWKzi0OiH #oeglobal

#openeducation #OER

[Open Education Global @OpenEdGlobal]

It is April, and #OEWeek26 is still going... including the incredible @LibreTexts sessions.

If you missed any, or just want to rewatch them ... check out their OEWeek playlist.
Catch them all here: https://t.co/kjW69IBv9b

#OEWeek #OEWeekReview #OpenEducation #EducationForAll

[Open Education Global @OpenEdGlobal]

#OEWeek26 #Today #Soon 🔥 "ADAPT and AI: An Instructor's Success Story"
🔜20:00 (UTC) Hosts: LibreTexts
Join the Event 🔎 https://t.co/FvsP9tCWnY
#English #OnlinePublic #oeweek #oeglobal #openeducation

[Dark Tonic Games @darktonicgames]

Another #WishlistWednesday is upon us!
Here, take this: https://t.co/WR6aLjJ4Si
It'll help you wishlist Blunderbusted, our upcoming light gun roguelike, on Steam!
#indiegame #indiedev #gamedev #gaming #steamgame #arcade #lightgun #lightgungames

[Delmar Larsen @LibreTexts]

Nice! Many believe stronger protections are needed for intellectual property, including OER content hosted online. Cloudflare serves as a content delivery intermediary for LibreTexts and has implemented a new policy that may significantly curb AI scraping. https://t.co/2KUWcRbwcE

[Delmar Larsen @LibreTexts]

@PaesaniLab @JPhysChem Nice!

[Delmar Larsen @LibreTexts]

@PaesaniLab @ChemRxiv nice

[Delmar Larsen @LibreTexts]

@nanophononics Did they at least address the letter to you personally or just "Dear Professor"?

[Delmar Larsen @LibreTexts]

@dncs0_l1 Not sure I understand. We are using month/day/year format; it is understandable if you favor a day/month/year (which makes more sense). This was compiled Feb. 11th, 2025 (last month).

[Delmar Larsen @LibreTexts]

@McCollumBrett

[Delmar Larsen @LibreTexts]

@danmcguirempls @mattthomas @AnnaRMills Any difference than imscc files?

[Delmar Larsen @LibreTexts]

@danmcguirempls @mattthomas @AnnaRMills I must have missed the import options on our LMS. They can accept XML files instead of Common Cartidge. Which whos XML file since they are quite varied? LibreTexts has one too, but it isn't designed for import to LMSs.

[Delmar Larsen @LibreTexts]

@danmcguirempls @mattthomas @AnnaRMills What's in the MoodleNet? We can already export the Common Cartridge of Anna's book on LibreTexts for all the LMSs.

[Delmar Larsen @LibreTexts]

@mattthomas @AnnaRMills Sorry to commendeer your thread. @AnnaRMills - I was just going over some OER projects from Chicago that got federal funds for DEI-Social Justice restructuring of Composition/Humanities/Speech classes - you know, the things that DC is trying to squash now: https://t.co/00x9wgq0Xk

[Delmar Larsen @LibreTexts]

@mattthomas @AnnaRMills We are acutely aware of the implications of being down (my inbox especially). Operating at 1M pageviews a day comes with some societal responsibility, which we take seriously.

[Delmar Larsen @LibreTexts]

@AnnaRMills @mattthomas Did you see Antecedent in the LibreVerse options now? I have been using it for my Chemistry labs (so it isn't just for composition courses).

[Delmar Larsen @LibreTexts]

@mattthomas @AnnaRMills The servers has an issue for our libraries that negatively impacted access to them for about 18 hours. This was the first time we had issues like this for so long in the 11 years since we went to the cloud. We don't have a post-mortum yet about the specifics of the issue.

[Delmar Larsen @LibreTexts]

@opencontent I agree 100%. Too often in these efforts (big and small), there is a missing or poorly thought out part of sustainability. It just took time, maturity, and the "need to know" in order to make that clear to me (vs. who I was seven years ago).