dingebre 🇺🇸 o|||||||o

I adore my family esp. my grandkids. I do physics, electronics, engineering, analog synthesizers and “build” my Jeeps. BS Mech Eng, MS Physics, ME Bioeng.

[dingebre 🇺🇸 o|||||||o @dingebre]

Awesome day at the ranch!

[dingebre 🇺🇸 o|||||||o @dingebre]

40’ish years in automotive engineering and motor vehicle accident reconstruction and failure analysis, degree in mechanical engineering, graduate degrees in physics, and biomechanics.

Pre-tensioner and air bag deployment depends on several factors and there is not a black and white criteria for deployment. It is much more nuanced, see e.g.: Gabler and Hinch, “Evaluation of Advanced Air Bag Deployment Algorithm Performance Using Event Data Recorders,” Proceedings of the Association for the Advancement of Automotive Medicine Scientific Conference, Vol 52, October 2008, pages 175-184. See also Code of Federal Regulations (CFR) Title 49 - Subtitle B - Chapter V - Part 571 - Subpart B - S571.208, Occupant Crash Protection.

Visible damage is not a reliable indicator or metric to determine if air bags/pre-tensioners should deploy. You could look for a local accident reconstruction firm and see what they would charge to download the data from the event data recorder (EDR). My company did that as a matter of course in virtually every collision we investigated as the technology became available regardless if the airbags deployed. The EDR in more modern vehicles often contains a wealth of data even if air bags and pre-tensioners didn’t deploy. Those data from the EDR may help you understand why your air bags/pre-tensioners did not trigger.

[dingebre 🇺🇸 o|||||||o @dingebre]

40’ish years in automotive engineering and motor vehicle accident reconstruction and failure analysis, degree in mechanical engineering, graduate degrees in physics, and biomechanics.

Pre-tensioner and air bag deployment depends on several factors and there is not a black and white criteria for deployment. It is much more nuanced, see e.g.: Gabler and Hinch, “Evaluation of Advanced Air Bag Deployment Algorithm Performance Using Event Data Recorders,” Proceedings of the Association for the Advancement of Automotive Medicine Scientific Conference, Vol 52, October 2008, pages 175-184. See also Code of Federal Regulations (CFR) Title 49 - Subtitle B - Chapter V - Part 571 - Subpart B - S571.208, Occupant Crash Protection.

Visible damage is not a reliable indicator or metric to determine if air bags/pre-tensioners should deploy. You could look for a local accident reconstruction firm and see what they would charge to download the data from the event data recorder (EDR). My company did that as a matter of course in virtually every collision we investigated as the technology became available regardless if the airbags deployed. The EDR in more modern vehicles often contains a wealth of data even if air bags and pre-tensioners didn’t deploy. Those data from the EDR may help you understand why your air bags/pre-tensioners did not trigger.

[dingebre 🇺🇸 o|||||||o @dingebre]

@MerriamWebster I prefer to use LaTeX:

Hyphen (or short dash): -
En dash: -- or \textendash
Em dash: --- or \textemdash

[dingebre 🇺🇸 o|||||||o @dingebre]

@SweetwaterSound The re-issued Steiner-Connolly Synthacon. Robbie did a wonderful job with a lot of help from Nyle. The attention to detail and quality is incredible. Even matched the color of all the switch caps :)

[dingebre 🇺🇸 o|||||||o @dingebre]

@SVG__Collection Prog Noir by Stick Men.

[J.R.R. Tolkien @JRRTolkien]

The world is indeed full of peril, and in it there are many dark places; but still there is much that is fair, and though in all lands love is now mingled with grief, it grows perhaps the greater.
— J.R.R. Tolkien

[dingebre 🇺🇸 o|||||||o @dingebre]

Thanks, but please no! Not a waste :) I just find it easier to read a book on quantum field theory than understand British politics :) I have lost count how many times I’ve watched Fawlty Towers, the Flying Circus episodes, and the Python movies as well as other fine British comedy. I’ll try to be less serious in future.

[dingebre 🇺🇸 o|||||||o @dingebre]

@Alj__Rogan @jk_rowling I need to get out more…

[dingebre 🇺🇸 o|||||||o @dingebre]

@Alj__Rogan @jk_rowling 🙄 :)

[dingebre 🇺🇸 o|||||||o @dingebre]

@DChadwickAuthor Well, Mormon should be first…

[dingebre 🇺🇸 o|||||||o @dingebre]

@DChadwickAuthor Newton, Einstein, Maxwell, Dirac, Matthew, Mark, Luke, John, honorable mention Tolkien, Lewis, and Mormon

[dingebre 🇺🇸 o|||||||o @dingebre]

@Ooops_I_said_it @jk_rowling 👍🏻

[dingebre 🇺🇸 o|||||||o @dingebre]

@Ooops_I_said_it @jk_rowling Nope, not new and I'm not commenting on any debate nor am I trying to tick boxes or assign labels. I'm just trying to understand differences in political definitions between the US and UK.

[dingebre 🇺🇸 o|||||||o @dingebre]

@MathWorks @MATLAB Ctrl+Alt+Del :)

[dingebre 🇺🇸 o|||||||o @dingebre]

@JohnCleese Happy almost birthday! Thanks for sharing your gift of humor and countless hours of laughs and entertainment! Please do hang around for many more years to come.

[dingebre 🇺🇸 o|||||||o @dingebre]

I suggest you look up the stats from the NHTSA and see how many deaths and significant injuries are caused by morons who are distracted while driving. I spent 30+ years investigating/reconstructing auto accidents and the number of collisions and tragedy caused by distracted driving is stunning. Yes, go after the others, but a dead loved one from a distracted driver is just as dead as one from a murderer.

[dingebre 🇺🇸 o|||||||o @dingebre]

I suggest you look up the stats from the NHTSA and see how many deaths and significant injuries are caused by morons who are distracted while driving. I spent 30+ years investigating/reconstructing auto accidents and the number of collisions and tragedy caused by distracted driving is stunning. Yes, go after the others, but a dead loved one from a distracted driver is just as dead as one from a murderer.

[Mike Netter @nettermike]

He told his students to go to the windows.
Get out. Jump if you have to.
Then Liviu Librescu walked to the classroom door and pressed his body against it.
He was 76 years old. He weighed 140 lbs
The gunman was in the hallway.
It was April 16, 2007. A Monday morning. Solid mechanics class at Virginia Tech, Room 204. Twenty-two students, most of them 19 or 20 years old.
At 9:45 AM, gunshots echoed through Norris Hall. Room by room, the shooter was working his way down the corridor.
Liviu heard it. He understood immediately.
He had survived the Holocaust. He had survived a labor camp. He had spent decades living under Communist oppression. He knew exactly what evil sounded like.
He told his students to escape through the windows. Second floor — it was a drop, but they'd survive. Then he walked to the door and held it shut with his body.
The shooter tried to force it open. It wouldn't move.
He fired through the door. Wood splintered. Bullets came through.
Liviu stayed.
Behind him, students were climbing out the windows. Dropping to the ground. Running. One by one, all twenty-two of them got out.
The shooter kept firing through the door.
Liviu held it shut until every student was safe.
Then the bullets killed him.
When police arrived, they found his body at the door.
All 22 of his students survived. Not one was injured.
Liviu Librescu was born on August 18, 1930, in Ploiești, Romania.
He was Jewish. In 1941, when he was eleven years old, Romanian authorities sent him and his family to a labor camp. His father died there. Liviu survived. When the war ended, he was fifteen.
He went back to school. Studied engineering. Earned a doctorate from the University of Bucharest.
But Communist Romania had no interest in allowing a Jewish intellectual to succeed. He was blocked from academic positions. Passed over for jobs he deserved. He applied to emigrate. The government kept refusing.
Finally, in 1978 when Liviu was 48 years old — Israeli Prime Minister Menachem Begin personally intervened. Romania let him go.
He had spent most of his adult life trapped in a country that didn't want him.
In Israel, he taught at Tel Aviv University. Published over 300 papers. Became an international expert in aeroelasticity — the science of how air flows over aircraft wings.
In 1985, Virginia Tech offered him a position. He moved to Blacksburg, Virginia. He taught there for 22 years. His students loved him — demanding but kind, high standards, genuine care.
He was still teaching full-time at 76. Still publishing research. Still showing up every Monday morning for solid mechanics.
April 16 was the first day of Passover — the Jewish holiday celebrating liberation from slavery and oppression.
Liviu Librescu died on the day his tradition sets aside to celebrate freedom.
He spent his entire life escaping death and oppression by luck, by persistence, by the intervention of others. And on his last morning, he chose to stand at a door so that twenty-two young people could have the future he had fought so hard to reach.
He could have run. He could have hidden. He could have climbed out a window with his students.
He chose to stay.
The Virginia Tech shooting killed 32 people that day — the deadliest school shooting in American history at the time.
Room 204 had zero casualties.
Because a 76-year-old Holocaust survivor held a door with his body until every student behind him was gone.
His funeral was held in Israel. Students from Virginia Tech flew across the ocean to honor him. The Israeli government awarded him the Star of David Medal posthumously. Virginia Tech named a scholarship in his memory.
His son said his father died the way he lived — protecting others.
A man who survived everything evil threw at him for 76 years.
On his last day, he made sure 22 kids survived too.
Professor Liviu Librescu. August 18, 1930 — April 16, 2007.
Holocaust survivor. Labor camp survivor.
302 published papers. 22 years at Virginia Tech.
22 students out the window.
He held the door.