Zeit
8 cards from across every topic, each citing a source. Tap one to open it in the feed.
- An hour used to be longer in summer than in winter.
Until the late Middle Ages, Europeans divided the time between sunrise and sunset into twelve hours, however long the …
- Earth's entire history compressed into one day.
Squeeze Earth's 4.54 billion years into 24 hours. The first life appears around 4 a.m. Multicellular animals don't show …
- On 19 January 2038 at 03:14:07, some computers will jump to 1901.
Many systems count time as seconds since 1 January 1970 and store the number in a signed 32-bit integer. The largest …
- Sharks existed before trees did.
Sharks have been swimming the seas for around 400 million years. The first organism that counts as a tree …
- Start at 25 and beat someone saving double from 35.
Time beats amount. Invest €100 a month at 6% from age 25 and you have about €200,000 at 65. Start at 35 with €200 a …
- The older an idea, the longer it will probably live.
The Lindy effect, named after a New York deli where comedians speculated about how long shows would run: for …
- Why every town once kept its own time.
Until the 19th century, each town set its clocks by local solar noon: London and Bristol differed by about 10 minutes. …
- Work expands to fill the time available for its completion.
Cyril Northcote Parkinson wrote the line in 1955 in a satirical Economist essay, after watching the British naval …