SortStack #1966 — 2031-10-27

By size · Order from shortest to longest.

1. A classic incandescent light bulb 11 cm

   Its glowing filament reaches around 2,500 degrees Celsius, yet wastes most of its energy as heat, not light.

2. A sperm whale 16 m

   Its head holds the largest brain of any animal that has ever lived, weighing about as much as a small person.

3. A wooden utility pole 18.5 m

   Most are pressure-treated with preservatives so they can stand outdoors for 40 years or more without rotting.

4. The CN Tower, Toronto 553 m

   Its glass floor can hold the weight of dozens of moose, yet many visitors still cannot bear to step on it.

5. The River Thames (length) 346 km

   It was once so polluted that 1858's 'Great Stink' forced Parliament to finally build London's sewers.

6. The Trans-Canada Highway (length) 7.8K km

   One of the world's longest national roads, it stretches across six time zones from the Atlantic to the Pacific.

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