Comparisons
JSON vs XML
Compare JSON and XML data formats — syntax, verbosity, parsing speed, and schema validation.
JSON vs YAML
Which configuration format should you use? Readability, features, and ecosystem compared.
Base64 vs Hex
Compare binary-to-text encoding methods — size overhead, readability, and use cases.
AES vs RSA
Symmetric vs asymmetric encryption compared — speed, key management, and security.
Celsius vs Fahrenheit
Temperature scale comparison — history, conversion formulas, and global usage.
PNG vs JPG
Which image format is better? Compression, quality, transparency, and use cases compared.
Latest Articles
The Yeast Breakthrough of 1883: Pure Culture Changes Brewing Forever
The 1883 Carlsberg story of pure yeast culture — and how to pitch the right number of cells in your homebrew.
100,000 Sines by Hand: The Monster Trig Tables of 1596
In 1596, Rheticus's students hand-computed ~100,000 trig ratios to 10 decimals. Today it takes one click.
GraphQL: From Facebook's 2012 Internal Fix to an API Standard
The story of GraphQL - and a visual query builder that keeps your syntax valid.
Focus in 25 Minutes: Why a Tomato Timer Works
How a tomato timer from 1980s Rome became the world's favorite focus method — and how to try it free.
IndexNow: Tell Search Engines About New Content in Minutes, Not Weeks
The open protocol that lets sites notify Bing and Yandex of changes — indexed in minutes, not weeks.
RSS Feeds Explained: The 1999 Technology That Still Beats Social Media
What RSS is, how feed readers work, and why it outlived every social network hype cycle.
Why 10 Metres of Water Equals (Almost) One Bar
Why pressure grows ~0.1 bar per metre of depth — and how a thin tube burst Pascal's barrel.
Engineering Theory Articles
All Engineering Articles
Theory articles & study notes — searchable by topic across all engineering fields.
Mechanical Engineering
Strength of materials, elasticity, torsion, buckling and section design.
Electrotechnics
Ohm's law, AC fundamentals, circuit theory and electric power.
HVAC & Refrigeration
Refrigeration cycles, heat pumps, psychrometrics and duct design.
Fluid Dynamics
Pipe flow, pressure drop, cavitation (NPSH) and gas laws.