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The distress signal "Mayday" comes from the French "M'aid... | funfact.wiki | funfact.wiki
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.
  • Distress signal
  • French
  • Aviation
  • Etymology
  • Mondegreen
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'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.
  • Goodbye
  • English
  • Language
  • Etymology
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NASA's AD-1 was an oblique wing aircraft — one wing pointing forward, the other backward. At supersonic speeds, swept wings reduce drag, but sweeping both shifts the center of lift. The oblique wing solved this by rotating both wings on a single pivot.
  • NASA
  • Airplane
  • Oblique wing
  • Supersonic
  • Aviation
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The popular belief that SOS stands for "Save Our Souls" is a myth. SOS has no inherent meaning—it was chosen as a distress signal because in Morse code it becomes "··· ─── ···," which is concise and unmistakable.
  • SOS
  • Morse code
  • Distress signal
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The English word "bear" was originally a euphemism meaning "the brown one." Ancient people feared or revered the bear so much that they avoided its true name, and the substitute became permanent. The Russian медведь similarly derives from a euphemism meaning "honey eater."
  • Bear
  • Honey
  • Language
  • Etymology
  • Name taboo
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AM stands for Ante Meridiem ("before noon" in Latin) and PM for Post Meridiem ("after noon"). Since 12:00 noon is noon itself—neither before nor after—the expressions "12 AM" and "12 PM" are inherently contradictory.
  • Time
  • Etymology
  • Latin language
  • Language
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