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Time since the first iron steamship crossed the English Channel

Time since the first iron steamship crossed the English Channel (202 y)

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Time since the first iron steamship crossed the English Channel (202 y)

  • is 1/250 of Time since first humans in Australia (50,000 y)...more
  • is 1/25 of Age of oldest wooden wheel (5,150 y)...more
  • is 1/25 of Time since building of Stonehenge (5,120 y)...more
  • is 1/25 of Time since the earliest writing (5,100 y)...more
  • is 1/20 of Time since earliest wheeled vehicles (4,000 y)...more
  • is 1/10 of Time since the birth of Hero of Alexandria (2,014 y)...more
  • is 1/5 of Time since start of building of Great Zimbabwe (1,000 y)...more
  • is 1/2 of Time since the death of Shakespeare (406 y)...more
  • is about as big as Time since the birth of mathematician Maria Gaetana Agnesi (206 y)...more
  • is about as big as Time since the first passenger steam railway service (199 y)...more
  • is 2.5 x Time since introduction of the first mass-produced helicopter (Sikorsky R-4) (80 y)...more
  • is 2.5 x Lifespan of human being (80 y)...more
  • is 5 x Time since first Apple Macintosh Computer launched (40 y)...more
  • is 20 x Time since first Tesla Model S launched (10 y)...more
  • is 100 x Lifespan of rat (2 y)...more
  • is 200 x Period of Earth's orbit (1 y)...more

If this was a standard unit ...