Biology / Computing / Earth & Space / Economics / Engineering / Food Science / History / Language / Maths / Mind / Music & Sound / Physics
Step away.
Come back smarter.
Short, interactive explainers for your break from work. Read one in thirty seconds, dive deeper if you like, then get back to it.
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Why the most common words are the shortest: Zipf's two laws of language
Count the words in almost any long text and a strange pattern appears: the most common word turns up about twice as…
Why a piano has 12 notes: the circle of fifths that never quite closes
Stack pure 3:2 fifths, the most consonant interval after the octave, and you'd expect to eventually land back on your…
How computers fake grey using only black and white dots
Old Mac screens, cheap printers and some modern games can only show two colours: black and white. Yet they still draw…
Why English spelling doesn't match how words sound
Around 1400, English spelling roughly matched speech. Bite sounded close to "beet", meet roughly like "mate", and house…
How a computer adds 7 + 1 using nothing but switches
A computer chip has no idea what numbers are. It only has switches: billions of transistors that are either on or off…
Why popcorn pops, and why some kernels never do
A popcorn kernel is a tiny, sealed pressure vessel. Its hard shell traps water inside the starchy core until heat turns…
Categories
01
BiologyCells, bodies, evolution and everything that grows.
1 break
02
ComputingThe ideas inside the machines we use all day.
2 breaks
03
Earth & SpacePlanets, weather, oceans and the sky above them.
1 break
04
EconomicsPrices, incentives and why markets do what they do.
1 break
05
EngineeringHow things are built, and why they don't fall down.
1 break
06
Food ScienceThe chemistry happening in your kitchen.
1 break
07
HistoryThe decisions, accidents and people that shaped now.
1 break
08
LanguageWords, grammar and how people make meaning.
2 breaks
09
MathsPatterns, chance and the numbers hiding in everyday things.
0 breaks
10
MindPsychology, perception and the quirks of the brain.
1 break
11
Music & SoundVibrations, harmony and why some sounds feel right.
1 break
12
PhysicsForces, light, time and the odd behaviour of the very small.
1 break
How it works
30 Second Break is a collection of short explainers for curious people of every age. Each break is one idea you can read in thirty seconds, with an optional deep dive that has its own interactive design.
01
Pick a topic
Browse by category, or hit Random.
02
Read for 30 seconds
Go deeper if you have a few more minutes.
03
Back to work
One thing smarter than before.