SortStack #413 — 2027-07-27

By weight · Order from lightest to heaviest.

1. A single grain of table salt 60 µg

   Salt crystals are near-perfect cubes because sodium and chloride ions lock into a rigid lattice — about a million grains fit in one cup.

2. An average adult human, averaged across the whole world 62 kg

   Researchers computed this from global census data; North America's average is about 20 kg heavier than Asia's.

3. A full-size kitchen refrigerator 135 kg

   Refrigeration changed cuisine more than almost any invention; Einstein even co-patented a fridge with no moving parts in 1930.

4. An upright piano 220 kg

   Inside is a cast-iron plate holding strings at a combined tension of roughly 18 tonnes of pull.

5. A Steinway concert grand piano 480 kg

   Each Steinway Model D takes about a year to build and contains over 12,000 individual parts.

6. A fully loaded Triple-E class container ship 250K t

   It hauls around 18,000 containers with a crew of only about 22 — fewer people than a fast-food restaurant shift.

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