The 160-character limit of SMS did not come only from har... | funfact.wiki | funfact.wiki
The 160-character limit of SMS did not come only from hardware limits. In 1985, Friedhelm Hillebrand studied postcards and telexes and found most fit near 152 characters. He argued 160 was enough, and the length entered communication standards.
In 19th-century Paris, all city clocks were synchronized via compressed air. Around 300km of underground pipes carried minute-by-minute pressure pulses from a central master clock to over 4,000 clocks. When the 1910 Paris flood hit, every clock in the city froze at 10:53 AM.
'Goodbye' originated in the mid-16th century as a contraction of "God be with ye." It was gradually shortened to forms like 'Godbwye,' and under the influence of greetings like 'Good morning,' 'God' shifted to 'Good,' giving us today's word.
Highway and railroad curves are not circular arcs — they use a special shape called a "clothoid" (Euler spiral). Its curvature changes gradually, so centrifugal force increases smoothly when transitioning from a straight section to a curve, rather than hitting suddenly.
Hypodermic injection needles aren't made by drilling holes. A flat steel strip is rolled into a tube, welded, then pulled through progressively smaller holes. Larger gauge numbers mean thinner needles — 18G means the wire passed through 18 holes.
The distress signal "Mayday" comes from the French "M'aidez" (help me). In 1921, radio officer Frederick Mockford at London's Croydon Airport proposed it for aviation communication with Paris, as both English and French speakers could understand it.