Library›Inventions & Discoveries›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

HistoryOne small ahaInvention or discovery

Nineteenth-century bicycle · the new opportunity it offered many individuals

Think it. Then flip it. ahamoraTap to reveal Back to the cue
HistoryOne small aha
Your new ahaAffordable personal mobility.

Bicycles also influenced clothing, city life, recreation, and women’s independence. Source: Bicycle ↗

ahamoraReference ↗

Keep the thread going

One answer is a beginning.

Share a little curiosity, or follow it into the full collection.

Flip the full deck →

More from Inventions & Discoveries

A few more worth knowing.

  1. 40The phonograph records and reproduces this form of vibration.RECALL
    Sound.

    Thomas Edison’s early device used a grooved cylinder to store sound vibrations.

    Open this card ↗
  2. 41Early radio · the kind of signals it transmittedRECALL
    Wireless signals.

    Radio soon became a mass medium for news, music, sport, and emergency communication.

    Open this card ↗
  3. 42Jacquard loom · purpose of its punched cardsRECALL
    To control woven patterns.

    The idea of instructions encoded on cards later influenced computing history.

    Open this card ↗