SortStack #587 — 2028-01-17

By size · Order from shortest to longest.

1. A standard paperclip 3.2 cm

   The familiar looped design, called the Gem clip, was never patented and has barely changed in over a century.

2. A credit card 8.6 cm

   Every card's dimensions follow a global standard so it fits machines from Tokyo to Toronto.

3. An acoustic guitar 99 cm

   The guitar's hollow body acts as an amplifier, resonating the strings' vibration into the air around it.

4. A great white shark 5.2 m

   Great whites can detect a single drop of blood diluted in 100 litres of water from hundreds of metres away.

5. New Zealand's South Island (length) 840 km

   It is home to fewer than two million people but more than ten times as many sheep.

6. The River Danube (length) 2.9K km

   It flows through more countries than any other river in the world, passing four national capitals on its way.

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