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Interactive · Game of Life
Emergent Complexity
How do simple rules create astonishing behavior? Play with a live Conway's Game of Life simulation and watch complexity emerge.
▶ launch simulation
Hello, world — I'm
Ruhullah Najafi
Welcome to my corner of the internet — a place where I collect and share the coolest things I find in science and technology, from quantum physics to elegant code.
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// About me
I design and build secure, scalable SAP solutions for the German banking industry.
As an experienced SAP Consultant and ABAP Developer, I thrive in challenging environments where deep technical expertise, precision and collaboration are key — turning complex regulatory and business requirements into efficient software.
Beyond consulting, I'm passionate about mentoring and knowledge sharing: I teach mathematics, physics and computer science as a lecturer, because I love finding out how I can help people most efficiently. Explaining things well is my favorite way of learning.
I studied Computer Science at TUHH in Hamburg and UC Berkeley, and I'm committed to continuous learning — with a soft spot for math, physics and everything technology.
Focus
SAP · ABAP · German Banking
Teaching
Math · Physics · CS
Education
M.Sc. CS — TUHH & UC Berkeley
Driven by
Curiosity & Precision
// Showcase
Cool things from science and technology that fascinate me — a growing collection of topics I explore, teach and write about.
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Interactive · Fourier
Drawing with Circles
Sketch any shape and watch spinning circles redraw it — the Fourier transform made visible, the math behind JPEG and MP3.
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Interactive · Double Pendulum
Deterministic Chaos
Exact physics, zero randomness — and still unpredictable. Drag a double pendulum and watch near-identical copies tear apart.
▶ launch simulation
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Physics × Computing
Quantum Computing
Qubits, superposition and entanglement — how quantum machines promise to crack problems classical computers never could.
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Math
The Mathematics of Encryption
From prime numbers to elliptic curves: the elegant number theory that silently secures every message you send.
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Astrophysics
Black Holes & Spacetime
Event horizons, time dilation and Hawking radiation — the most extreme laboratories the universe has to offer.
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Technology
AI & Machine Learning
Neural networks, transformers and the math behind machines that learn — and what it means for the future of work.
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Engineering
Clean Code & Architecture
Why great software is designed, not just written — patterns and principles from decades of enterprise development.
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Knowledge Sharing
Teaching & Mentoring
Notes and material from my lectures in mathematics, physics and computer science — learning by explaining.