SortStack #935 — 2028-12-30
By duration · Order from shortest to longest.
- One swing of a grandfather clock's pendulum 1 sec
A pendulum about one metre long swings in almost exactly one second — a coincidence so neat it was once proposed as the definition of the metre.
- The Wright brothers' first powered flight 12 sec
The 1903 flight covered just 36.5 metres — shorter than the wingspan of a Boeing 747. Within 66 years, humans were on the Moon.
- A standard university lecture 50 min
Attention research suggests student focus starts lapsing after 10-15 minutes — which is roughly when most lecturers are just warming up.
- New Horizons' journey from Earth to Pluto 9.5 years
It left Earth as the fastest spacecraft ever launched — and Pluto was demoted from planet status just seven months into the trip.
- Roman rule over Britain 366.9 years
Rome governed Britain for 367 years — longer than the entire history of the United States — before abandoning it to defend Italy.
- A photon's journey from the Sun's core to its surface 170K years
Energy ricochets through the dense interior for on the order of 100,000 years — then crosses the void to Earth in barely eight minutes.