Dr. Jorge Diaz
@jsdiaz.bsky.social
Theoretical physicist in industry. Making physics videos on youtube.com/@jkzero. Nuclear-physics junkie. Aspiring Bayesian. Former #neutrino analyst.
Pinned
Dr. Jorge Diaz
@jsdiaz.bsky.social
· Nov 11
Dr. Jorge S. Diaz
Business Inquiries: [email protected]
Theoretical physicist creating educational content. I share stories about physics and their protagonists complemented by nice animations, visualization...
www.youtube.com
Hi, I am a theoretical physicist, during my free time I run a YouTube channel for physics nerds (www.youtube.com/@jkzero/). Trying this platform in an attempt to rediscover the great astro/physics community that existed on the other site.
Neutrinos: "shielding? awww, that's cute"
⚛️
⚛️
![Comic. Confusion matrix showing renditions of different combinations, colored yellow, tan, or gray. [Air: gamma rays Y, neutrons Y, alpha particles G, light Y, sound Y, heat Y, swords Y, toxic dust Y, radio Y, sharks G] [Lead: gamma rays G, neutrons T, alpha particles G, light G, Sound Y, heat Y, swords G, toxic dust T, radio G, sharks G] [Water: gamma rays T, neutrons G, alpha particles G, light T, sound Y, heat Y, swords Y, toxic dust Y, radio G, sharks Y] [Vacuum: gamma rays Y, neutrons Y, alpha particles Y, light Y, sound G, heat T, swords Y, toxic dust Y, radio Y, sharks G] [Oven mitts: gamma rays Y, neutrons Y, alpha particles G, light G, sound T, heat G, swords Y, toxic dust Y, radio Y, sharks Y] [Armor: gamma rays Y, neutrons Y, alpha particles G, light G, sound Y, heat Y, swords G, toxic dust Y, radio G, sharks T] [Biohazard suit: gamma rays Y, neutrons Y, alpha particles G, light G, sound Y, heat Y, swords Y, toxic dust G, radio Y, sharks Y] [Faraday cage: gamma rays Y, neutrons Y, alpha particles Y, light Y, sound Y, heat Y, swords Y, toxic dust Y, radio G, sharks Y] [Shark cage: gamma rays Y, neutrons Y, alpha particles Y, light Y, sound Y, heat Y, swords Y, toxic dust Y, radio Y, sharks G]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreib7rzofmrqb5cvnyccnb7ftj6qroxtp55i4dqqnbp2ozun6gaxbkm@jpeg)
October 24, 2025 at 8:52 AM
Neutrinos: "shielding? awww, that's cute"
⚛️
⚛️
new video: "Lagrangian Mechanics: when theoretical physics got real." In addition to some history, I take Newtonian mechanics and derive Hamilton’s principle, revealing how the mysterious quantity K-U naturally appears, answering the common question "why is L=K-U?" youtu.be/QbnkIdw0HJQ 🧪⚛️🔭 #chemsky
October 7, 2025 at 7:37 PM
new video: "Lagrangian Mechanics: when theoretical physics got real." In addition to some history, I take Newtonian mechanics and derive Hamilton’s principle, revealing how the mysterious quantity K-U naturally appears, answering the common question "why is L=K-U?" youtu.be/QbnkIdw0HJQ 🧪⚛️🔭 #chemsky
oh yeah, some lazy versions of the story simply claim that Taylor just assumed this constant to be 1, which I even find offensive when you see all the work behind that calculation
September 29, 2025 at 9:24 PM
oh yeah, some lazy versions of the story simply claim that Taylor just assumed this constant to be 1, which I even find offensive when you see all the work behind that calculation
he was also known as "the Italian navigator that landed in the new world" when the Chicago Pile reached criticality
September 29, 2025 at 9:09 PM
he was also known as "the Italian navigator that landed in the new world" when the Chicago Pile reached criticality
an important question is: where does the value on the rhs of eq. (1) comes from? Some versions of the story claim that he guessed it or that he calibrated it from small explosions, the truth is that most of his paper is about calculating this number. I made a video about this youtu.be/8ru_LpjuabY
Size of a nuclear blast
YouTube video by Dr. Jorge S. Diaz
youtu.be
September 29, 2025 at 9:06 PM
an important question is: where does the value on the rhs of eq. (1) comes from? Some versions of the story claim that he guessed it or that he calibrated it from small explosions, the truth is that most of his paper is about calculating this number. I made a video about this youtu.be/8ru_LpjuabY
Sep. 21, 1909: Einstein presents at the Salzburg conference his discovery that Planck's radiation law hides a quantum Easter egg: the wave-particle duality of light. Details in "This is how the wave-particle duality of light was discovered" youtu.be/f7JvywBOGYY 🧪⚛️🔭 #chemsky
September 21, 2025 at 8:24 PM
Sep. 21, 1909: Einstein presents at the Salzburg conference his discovery that Planck's radiation law hides a quantum Easter egg: the wave-particle duality of light. Details in "This is how the wave-particle duality of light was discovered" youtu.be/f7JvywBOGYY 🧪⚛️🔭 #chemsky
enjoy beautiful Heidelberg, despite the clouds and windy start of the week. We save the sun for the last part of the week, enjoy!
September 17, 2025 at 6:21 PM
enjoy beautiful Heidelberg, despite the clouds and windy start of the week. We save the sun for the last part of the week, enjoy!
thanks for clarifying your point, I get it now, I misunderstood it.
September 11, 2025 at 4:22 PM
thanks for clarifying your point, I get it now, I misunderstood it.
I strongly disagree with the "we should do everything we can to keep them around," what if the person doesn't want to "be kept around"? maybe the person wants stability, mental health, a life... the "we should do everything we can to keep them around" sounds like focusing the PI's viewpoint only.
August 31, 2025 at 7:54 PM
I strongly disagree with the "we should do everything we can to keep them around," what if the person doesn't want to "be kept around"? maybe the person wants stability, mental health, a life... the "we should do everything we can to keep them around" sounds like focusing the PI's viewpoint only.
new video: "This is how Heisenberg created quantum mechanics." A step-by-step guide to understand Heisenberg's groundbreaking but cryptic paper of quantum mechanics.🧪⚛️🔭 #chemsky #QuantumPhysics youtu.be/oVzzIkkYGY8
This is how Heisenberg created quantum mechanics - a step-by-step guide #SoME4
YouTube video by Dr. Jorge S. Diaz
youtu.be
August 25, 2025 at 5:07 PM
new video: "This is how Heisenberg created quantum mechanics." A step-by-step guide to understand Heisenberg's groundbreaking but cryptic paper of quantum mechanics.🧪⚛️🔭 #chemsky #QuantumPhysics youtu.be/oVzzIkkYGY8
sí, claro, Luis Huerta era el nombre que todos escuchábamos. Buenos tiempos.
August 19, 2025 at 6:58 PM
sí, claro, Luis Huerta era el nombre que todos escuchábamos. Buenos tiempos.
qué buenos recuerdos me traes, Martín. Muy bien la pasé en las Olimpiadas de Física en Chile, hice buenos amigos y volví a casa con medallas tres años consecutivos
August 18, 2025 at 6:06 PM
qué buenos recuerdos me traes, Martín. Muy bien la pasé en las Olimpiadas de Física en Chile, hice buenos amigos y volví a casa con medallas tres años consecutivos
when I was an undergraduate student, I was convinced that "Bremsstrahlung" was the last name of some German physicist named Wilhelm Bremsstrahlung, or something like that. Just like "Gauge invariance" was obviously named after some French physicist named François Gauge.
August 10, 2025 at 9:37 AM
when I was an undergraduate student, I was convinced that "Bremsstrahlung" was the last name of some German physicist named Wilhelm Bremsstrahlung, or something like that. Just like "Gauge invariance" was obviously named after some French physicist named François Gauge.
new video: "The origin of a bizarre quantum phenomenon." The story of a wrong theory and a wrong plot that gave rise to a weird the concept of zero-point energy. Part 6 of my series on the road to Heisenberg's matrix formulation of quantum mechanics.🧪⚛️🔭 #chemsky #QuantumPhysics youtu.be/DgrOm5nsm98
The origin of a bizarre quantum phenomenon
YouTube video by Dr. Jorge S. Diaz
youtu.be
August 2, 2025 at 10:49 AM
new video: "The origin of a bizarre quantum phenomenon." The story of a wrong theory and a wrong plot that gave rise to a weird the concept of zero-point energy. Part 6 of my series on the road to Heisenberg's matrix formulation of quantum mechanics.🧪⚛️🔭 #chemsky #QuantumPhysics youtu.be/DgrOm5nsm98
new video: "The quantum theory created to eliminate the photon," part 5 of my series on the road to Heisenberg's matrix formulation of quantum mechanics presents Bohr's last attempt to vanquish Einstein's light quanta 🧪⚛️🔭 #chemsky #QuantumPhysics youtu.be/Jcv90l9R728
The quantum theory created to eliminate the photon
YouTube video by Dr. Jorge S. Diaz
youtu.be
July 12, 2025 at 11:45 AM
new video: "The quantum theory created to eliminate the photon," part 5 of my series on the road to Heisenberg's matrix formulation of quantum mechanics presents Bohr's last attempt to vanquish Einstein's light quanta 🧪⚛️🔭 #chemsky #QuantumPhysics youtu.be/Jcv90l9R728
Some people find meaning in relationships between fundamental numbers, I find it useless but amusing. Here is one that I found many years ago: the abundance of U-235 in natural uranium (0.72%) is equal to the approximate value of the fine-structure constant (1/137)
July 7, 2025 at 7:54 PM
Some people find meaning in relationships between fundamental numbers, I find it useless but amusing. Here is one that I found many years ago: the abundance of U-235 in natural uranium (0.72%) is equal to the approximate value of the fine-structure constant (1/137)
qué recuerdos me trajiste @fisicamartin.bsky.social con tu referencia a Hess, hace años escribí este artículo contando su historia conexioncausal.wordpress.com/2015/12/12/m...
June 24, 2025 at 9:22 PM
qué recuerdos me trajiste @fisicamartin.bsky.social con tu referencia a Hess, hace años escribí este artículo contando su historia conexioncausal.wordpress.com/2015/12/12/m...
new video: "The virtual orchestra of quantum mechanics," part 4 of my series on the road to Heisenberg's matrix formulation of quantum mechanics 🧪⚛️🔭 #chemsky #QuantumPhysics youtu.be/UbFrVCYDANg
The virtual orchestra of quantum mechanics
YouTube video by Dr. Jorge S. Diaz
youtu.be
June 20, 2025 at 8:32 PM
new video: "The virtual orchestra of quantum mechanics," part 4 of my series on the road to Heisenberg's matrix formulation of quantum mechanics 🧪⚛️🔭 #chemsky #QuantumPhysics youtu.be/UbFrVCYDANg
new video: "The lesser-known link between Bohr and Heisenberg," part 3 of my series on the road to Heisenberg's matrix formulation of quantum mechanics 🧪⚛️ #chemsky #IYQ2025 youtu.be/9hfQZMBQOiw
The lesser-known link between Bohr and Heisenberg
YouTube video by Dr. Jorge S. Diaz
youtu.be
May 30, 2025 at 3:05 PM
new video: "The lesser-known link between Bohr and Heisenberg," part 3 of my series on the road to Heisenberg's matrix formulation of quantum mechanics 🧪⚛️ #chemsky #IYQ2025 youtu.be/9hfQZMBQOiw
new video: "Pink Floyd and the roots of Quantum Mechanics," part 2 of my series on the road to Heisenberg's matrix formulation of quantum mechanics 🧪⚛️ #chemsky youtu.be/HC0a33HnTuE
Pink Floyd and the roots of Quantum Mechanics
YouTube video by Dr. Jorge S. Diaz
youtu.be
May 9, 2025 at 9:15 PM
new video: "Pink Floyd and the roots of Quantum Mechanics," part 2 of my series on the road to Heisenberg's matrix formulation of quantum mechanics 🧪⚛️ #chemsky youtu.be/HC0a33HnTuE
the dark oval is the region of low light intensity and the bright ring around is the convergence of light rays refracted away from the center. I think it is the static version of dark and bright zones at the bottom of a pool. I am not an optics expert, this is just how I interpret this phenomenon.
April 24, 2025 at 7:18 PM
the dark oval is the region of low light intensity and the bright ring around is the convergence of light rays refracted away from the center. I think it is the static version of dark and bright zones at the bottom of a pool. I am not an optics expert, this is just how I interpret this phenomenon.
I love those shadows, my guess is that this is a mixture of surface tension and Snell's law: the bug deforms the water surface tilting the normal towards the bug's leg producing an effective "diverging lens" so light rays are refracted away from where they would have landed in the absence of the bug
April 24, 2025 at 6:49 PM
I love those shadows, my guess is that this is a mixture of surface tension and Snell's law: the bug deforms the water surface tilting the normal towards the bug's leg producing an effective "diverging lens" so light rays are refracted away from where they would have landed in the absence of the bug
new video: Einstein's groundbreaking work on radiation that set the basis of the laser and paved the way to Heisenberg's Matrix Mechanics 🧪⚛️ #chemsky youtu.be/_lC6-RUI7PQ
Matrix Mechanics: The Genesis
YouTube video by Dr. Jorge S. Diaz
youtu.be
April 15, 2025 at 8:34 PM
new video: Einstein's groundbreaking work on radiation that set the basis of the laser and paved the way to Heisenberg's Matrix Mechanics 🧪⚛️ #chemsky youtu.be/_lC6-RUI7PQ