Don De Tina
@donnyd.bsky.social
Retired MD with an Applied Math/CompSci degree. ND.
Grateful husband to MaryLou and caring dad to Greg & Alicia.
Alicia died by suicide in Jan28 2014, at age 27💔. Forever loved.
📍Hamilton, Canada
Grateful husband to MaryLou and caring dad to Greg & Alicia.
Alicia died by suicide in Jan28 2014, at age 27💔. Forever loved.
📍Hamilton, Canada
Reposted by Don De Tina
I had to do some workarounds to get this file size small enough for BlueSky, but here’s one minute of slow, silent colors I made to calm your jangled nerves.
February 13, 2026 at 1:46 AM
I had to do some workarounds to get this file size small enough for BlueSky, but here’s one minute of slow, silent colors I made to calm your jangled nerves.
Reading a beautiful non-calculus derivation of the formula for the volume of a sphere using Cavalieri's Principle. (Sometimes, I forget the treasure that is math.stackexchange.com ) math.stackexchange.com/questions/16...
Why is the volume of a sphere $\frac{4}{3}\pi r^3$?
I learned that the volume of a sphere is $\frac{4}{3}\pi r^3$, but why? The $\pi$ kind of makes sense because its round like a circle, and the $r^3$ because it's 3-D, but $\frac{4}{3}$ is so random...
math.stackexchange.com
February 12, 2026 at 3:37 PM
Reading a beautiful non-calculus derivation of the formula for the volume of a sphere using Cavalieri's Principle. (Sometimes, I forget the treasure that is math.stackexchange.com ) math.stackexchange.com/questions/16...
Reposted by Don De Tina
repost @pxlsbyp on IG
twelve principles of animation - genuary jan. 2nd
₊⊹ when i came across glyph plots, they reminded me of butterflies ₊⊹
#genuary2026 #p5js #generativeart #proceduralart #procedural #computationalart
twelve principles of animation - genuary jan. 2nd
₊⊹ when i came across glyph plots, they reminded me of butterflies ₊⊹
#genuary2026 #p5js #generativeart #proceduralart #procedural #computationalart
February 9, 2026 at 9:01 AM
repost @pxlsbyp on IG
twelve principles of animation - genuary jan. 2nd
₊⊹ when i came across glyph plots, they reminded me of butterflies ₊⊹
#genuary2026 #p5js #generativeart #proceduralart #procedural #computationalart
twelve principles of animation - genuary jan. 2nd
₊⊹ when i came across glyph plots, they reminded me of butterflies ₊⊹
#genuary2026 #p5js #generativeart #proceduralart #procedural #computationalart
Reposted by Don De Tina
February 7, 2026 at 11:48 AM
Reposted by Don De Tina
New p5.js release today! github.com/processing/p... This includes a number of updates to the p5.strands API and docs to make it more approachable, and some WebGPU performance updates
Release v2.2.1 · processing/p5.js
What's Changed
This patch includes documentation, bugfixes, and dependency updates. A flatter p5.strands API is also included as part of ongoing incremental strands API.
You can get started with th...
github.com
February 11, 2026 at 3:37 PM
New p5.js release today! github.com/processing/p... This includes a number of updates to the p5.strands API and docs to make it more approachable, and some WebGPU performance updates
Reposted by Don De Tina
Light sculptures by American artist and activist Tom Lloyd, 1960s, whose work formed the inaugural exhibition at the Studio Museum in Harlem in 1968. He later turned his focus to community organizing, co-founding the Art Workers' Coalition and advocating for Black and Latino museum representation.
February 11, 2026 at 4:09 PM
Light sculptures by American artist and activist Tom Lloyd, 1960s, whose work formed the inaugural exhibition at the Studio Museum in Harlem in 1968. He later turned his focus to community organizing, co-founding the Art Workers' Coalition and advocating for Black and Latino museum representation.
Reposted by Don De Tina
Still playing with these impossible cylinders. Here I have an ellipse with the "Batman curve" in the reflection.
February 11, 2026 at 3:09 PM
Still playing with these impossible cylinders. Here I have an ellipse with the "Batman curve" in the reflection.
Age verification? I'm in a maze of twisty little passages, all alike.
Age verification? My first computer used DOS.
Age verification? I made websites in Dreamweaver
February 10, 2026 at 5:16 PM
Age verification? I'm in a maze of twisty little passages, all alike.
The creative process in online vids is amazing. Also, this reminds me of Nebula in Guardians of the Galaxy.
February 10, 2026 at 3:39 PM
The creative process in online vids is amazing. Also, this reminds me of Nebula in Guardians of the Galaxy.
It turns out, immediate cause of death for Catherine O'Hara was a pulmonary embolism, with an underlying cause of rectal carcinoma. Well, sadly, at least we know. About a quarter of all venous thromboembolic disease is due to underlying cancer.
A while back I had a friend who suffered a pulmonary embolism. He was diagnosed and treated successfully after experiencing sudden severe shortness of breath. So, the sad news about Catherine O’Hara has had me doing a deep dive refresher on the subject.
February 9, 2026 at 9:53 PM
It turns out, immediate cause of death for Catherine O'Hara was a pulmonary embolism, with an underlying cause of rectal carcinoma. Well, sadly, at least we know. About a quarter of all venous thromboembolic disease is due to underlying cancer.
I can't wait either, but it won't be authentic unless there's an old Italian guy in it. youtube.com/shorts/COc0S...
February 9, 2026 at 7:32 PM
I can't wait either, but it won't be authentic unless there's an old Italian guy in it. youtube.com/shorts/COc0S...
Just learned of Terrence Tao's interest in Lean programming language library development. I've looked at Lean before, but I'm impressed with how the ecosystems/community has advanced since I last looked, so now preparing to do a dive into learning it. lean-lang.org
Lean Programming Language
Lean is an open-source programming language and proof assistant that enables correct, maintainable, and formally verified code.
lean-lang.org
February 9, 2026 at 3:40 PM
Just learned of Terrence Tao's interest in Lean programming language library development. I've looked at Lean before, but I'm impressed with how the ecosystems/community has advanced since I last looked, so now preparing to do a dive into learning it. lean-lang.org
Still feeling the glow of Bad Bunny and company's performance last night. Always a Latine music fan, from Miami Sound Machine to Santana to Yerba Buena, but last night was earthy, warm, exciting, creative, and energizing. Also this: ca.yahoo.com/news/super-b...
Super Bowl 2026 halftime features Canada shoutout and a waving flag: 'Bad Bunny is Canada down,' viewers say
Bad Bunny’s Super Bowl 60 halftime shoutout to Canada thrilled viewers across the country, as his closing message of unity included Canada by name — sparking pride, surprise, memes, and a flood of onl...
ca.yahoo.com
February 9, 2026 at 3:14 PM
Still feeling the glow of Bad Bunny and company's performance last night. Always a Latine music fan, from Miami Sound Machine to Santana to Yerba Buena, but last night was earthy, warm, exciting, creative, and energizing. Also this: ca.yahoo.com/news/super-b...
Reposted by Don De Tina
Parachute waltz 🪂 soon on @editart_xyz
🎚️slider 4: Change the movement of the sliders 🤸 and the position of the G note
🎚️slider 5: Change background 🎨, harmony 🎼 and the position of the lowest note (E)
🧵👇
#generative 🔊
#tezos #NFTCommunity #abstractart
🎚️slider 4: Change the movement of the sliders 🤸 and the position of the G note
🎚️slider 5: Change background 🎨, harmony 🎼 and the position of the lowest note (E)
🧵👇
#generative 🔊
#tezos #NFTCommunity #abstractart
February 9, 2026 at 12:33 PM
Parachute waltz 🪂 soon on @editart_xyz
🎚️slider 4: Change the movement of the sliders 🤸 and the position of the G note
🎚️slider 5: Change background 🎨, harmony 🎼 and the position of the lowest note (E)
🧵👇
#generative 🔊
#tezos #NFTCommunity #abstractart
🎚️slider 4: Change the movement of the sliders 🤸 and the position of the G note
🎚️slider 5: Change background 🎨, harmony 🎼 and the position of the lowest note (E)
🧵👇
#generative 🔊
#tezos #NFTCommunity #abstractart
Reposted by Don De Tina
Hamilton NBA star Shai Gilgeous-Alexander now part owner of downtown arena
Hamilton NBA star Shai Gilgeous-Alexander now part owner of downtown arena
Having the Oklahoma City Thunder star forward and last year's NBA MVP involved in TD Coliseum could help lure artists and athletes to downtown Hamilton.
www.thespec.com
February 9, 2026 at 1:16 PM
Hamilton NBA star Shai Gilgeous-Alexander now part owner of downtown arena
A locally produced documentary and experiment in which seniors produce a horror short. The short can be found at the end of the page, and, so far, the documentary is only being shown at film festivals. Cute and weird. www.silverscreamers.com
Home | Silver Screamers
www.silverscreamers.com
February 8, 2026 at 11:45 PM
A locally produced documentary and experiment in which seniors produce a horror short. The short can be found at the end of the page, and, so far, the documentary is only being shown at film festivals. Cute and weird. www.silverscreamers.com
Reposted by Don De Tina
Oh my god this shit is infuriating! Ugh. How is an article titled like that helpful?
February 8, 2026 at 6:52 PM
Oh my god this shit is infuriating! Ugh. How is an article titled like that helpful?
Was playing Balatro convinced they'd changed their background music to something demonic before realizing Spotify was on and playing Silver Mt. Zion. (Was actually the perfect match.)
February 8, 2026 at 2:10 PM
Was playing Balatro convinced they'd changed their background music to something demonic before realizing Spotify was on and playing Silver Mt. Zion. (Was actually the perfect match.)
Reposted by Don De Tina
February 7, 2026 at 11:36 PM
Reposted by Don De Tina
Reposted by Don De Tina
#genuary2026 day 1: "One color, one shape."
February 7, 2026 at 8:13 PM
#genuary2026 day 1: "One color, one shape."
Reposted by Don De Tina
Falling in love with #marimo.
Scattering of roots of perturbed quadratic equations.
Made with #python #numpy #matplotlib and
@marimo.io
Notebook and code in the first comment 👇👇👇
Scattering of roots of perturbed quadratic equations.
Made with #python #numpy #matplotlib and
@marimo.io
Notebook and code in the first comment 👇👇👇
February 7, 2026 at 10:38 AM
Falling in love with #marimo.
Scattering of roots of perturbed quadratic equations.
Made with #python #numpy #matplotlib and
@marimo.io
Notebook and code in the first comment 👇👇👇
Scattering of roots of perturbed quadratic equations.
Made with #python #numpy #matplotlib and
@marimo.io
Notebook and code in the first comment 👇👇👇
Perhaps the most exhaustive list of Italian hand gestures I’ve yet encountered. learnamo.com/en/63-famous...
February 7, 2026 at 5:21 AM
Perhaps the most exhaustive list of Italian hand gestures I’ve yet encountered. learnamo.com/en/63-famous...
February 7, 2026 at 4:00 AM