Konstantinos Plomaritis

Physics, programming, biomedical engineering. Aristotle university of Thessaloniki.
Marathon runner, freedom fighter.

[tetsuo @tetsuoai]

A map of ARPANET, the precursor to the internet, showing the 111 computer terminals connected to the network in 1977.

[Todd of Mischief @AndToddsaid]

I wish they showed me stuff like this in school.

[Yugoslavian Visuals @YugoslavVisuals]

Men only want one thing and it's the glory days of Hotel Yugoslavia

[Eastern Bloc Visuals @eastblocvisuals]

Residential buildings in Bobruisk, Belarusian SSR, 1980s.

[It's FOSS @Itsfoss]

True story 🤣

[Yuri Shakhov 🇷🇺 @Koroshitelol]

A rather rare album of nearly 100 pages from the USSR Ministry of Aviation Industry, dedicated to the NK-33 (11D111) rocket engine.

It contains diagrams, technical drawings, electrical schematics, and, of course, photographs.

Link:
https://t.co/5TaFaLG2ZD

[TheBrainMaze TBM @thebrainmaze]

Artemis Mission Route in 3D
- This animation visualizes the Artemis mission trajectory in a dynamic 3D perspective, showing how the spacecraft travels through the Earth–Moon system while all celestial bodies are in motion. Instead of a static path, the Sun, Earth, and Moon move simultaneously, revealing the true complexity of orbital mechanics. The result highlights how the Artemis route is not a simple curve, but a constantly shifting trajectory shaped by gravity and motion. This view provides a clearer understanding of how modern space missions navigate through space in real time. Right now, Artemis is on its return path to Earth and is expected to arrive back soon as it completes its mission. The sizes and distances of the Sun, Earth, and Moon are not to scale and are adjusted for visual purposes.

[CR1337 @CR1337]

When Andres Freund, Linux kernel contributor & Microsoft engineer was debugging slow SSH logins on his Debian machine in March 2024, he noticed something weird:

liblzma (part of XZ Utils) was using way too much CPU power, so he kept digging, and what he uncovered was a multi-year supply-chain attack!

An attacker using the name “Jia Tan” had spent two years slowly infiltrating the tiny XZ Utils project, a compression library used by virtually every major Linux distribution.

The backdoor wasn’t in the source code. It was hidden deep inside the build scripts. It would have given the attacker remote root access on millions of servers the moment a specially crafted SSH key was used.

Freund caught it days before it would have shipped in Debian, Fedora, Ubuntu and more.

One man, one anomaly, one routine debug session saved the internet from a potential catastrophe.

Respect!

[Cat Woman @inertiaaaaaa]

Visual representation of Schrödinger wave equation.
📷 Erik Norman

[Humanoid History @HumanoidHistory]

Calma GDS II computer-aided design workstation, 1984.

[chiefofautism @chiefofautism]

someone made the most ADDICTIVE game to learn DATA CENTER networking

its called Data Center, $6 game, you start with bare floors, buy racks, mount servers, route every cable by hand

the INSANE part, every customers traffic shows as colored balls rolling through your cables... you literally see bottlenecks in real time

180 reviews in 48 hours, people with RTX 4090 rigs are HOOKED on a $6 cabling sim

[NASA Artemis @NASAArtemis]

Next stop: lunar flyby.

The Orion spacecraft recently ignited its main engine on the service module for about six minutes to provide about 6,000 pounds of thrust. This maneuver sets the Artemis II astronauts on the path to the Moon.

[Amazing Space @AmazingSpace2]

Artemis II animation - fuel use during launch

[NASA @NASA]

It’s not a straight shot to the far side of the Moon! 🌕

Over approximately 10 days, the Artemis II astronauts will orbit Earth twice before looping around the far side of the Moon in a figure eight and returning home.

[hal @HAL09999]

⟨0⁺| Φ* |0⁻⟩

[Mathematica @mathemetica]

Double pendulum chaos in all its glory!

Even with deterministic Newtonian equations, the tiniest initial nudge explodes into unpredictable fractal trails.
The simplest nonlinear system that breaks classical intuition.

[Peter Vogel @PeterVogel]

Morse Code "coin". Not particularly useful for learning but the "receive side" is interesting. See if you can figure it out.

[Yorch Torch Games @YorchTorchGames]

The modern audience doesn't want you to accept this.

But DOOM 1993 got everything right.

No cutscenes.
No hand holding.
No corporate slop.

Just brutal combat, genius levels and a metal soundtrack.

Woke trash disappears within days.
DOOM is still here.

[Philosophy Of Physics @PhilosophyOfPhy]

After the Space Shuttle Challenger exploded in January 1986, killing its seven crew members, President Reagan appointed a commission to investigate.

Richard Feynman, already battling cancer and reluctant to join, accepted because a former student asked.

He quickly grew frustrated with the slow, formal hearings and NASA’s optimistic safety claims (1 in 100,000 chance of failure).

Instead, he talked directly to engineers, who revealed far higher risks.

The night before a key televised hearing, Feynman bought a C-clamp from a hardware store.

During the session, he took a sample of the rubber O-ring material from the solid rocket boosters, clamped it, and dropped it into a glass of ice water (mimicking the cold launch temperature that day).

After a moment, he removed it and showed how the rubber had lost its elasticity, it no longer sprang back.

He explained simply: at low temperatures, the O-rings couldn’t seal properly, allowing hot gas to leak and cause the disaster.

His live demonstration cut through layers of management denial and became one of the most iconic moments in engineering accountability.

In his personal appendix to the report, he famously wrote:

“For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.”

[Philosophy Of Physics @PhilosophyOfPhy]

At the quantum level, the macroscopic concepts of scale, solidity, and distance become, in a sense, illusory, as reality is described not by solid objects, but by probability, energy fields, and interaction.