How Things Work
The everyday science and engineering hiding in plain sight — from the code in your wallet to the contrails over your head.

Why the UK and US Still Use Miles and Gallons (and How to Convert Them)
Why do the US and UK still use miles, mph and gallons while India went metric in 1958-62? The history, plus…

How Two-Factor Authentication Actually Works (and Why RBI Now Requires It)
RBI's new Authentication Mechanisms Directions require two-factor authentication on all digital payments from…

How Time Zones Actually Work — and Why India Has Just One
India spans nearly 2,900 km east to west but runs on a single time zone, IST (UTC+5:30). Here's how time…

What Is a Quantum Computer? IonQ's New Superion 256 Chip, Explained
IonQ announced its Superion 256 quantum processor on September 8, 2026 — 256 qubits built from trapped ions.…

How QR Codes Actually Work
QR codes look like random black-and-white noise, but every square in the pattern has a job. Here's how they…

Why Do Airplanes Leave White Trails?
Contrails aren't smoke or fuel exhaust — they're a cloud your plane makes in real time. The actual physics,…
Test what you know
See how well you actually understand this stuff with a quick, free quiz.
Take the Technology Quiz