Time since the peak of Roman Empire

Time since the peak of Roman Empire (1,900 y)

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Neat Ratios ...

Time since the peak of Roman Empire (1,900 y)

  • is 1/2500 of Age of earliest mammoth fossils (4.8 million y)...more
  • is 2.5 x Time since the birth of Marco Polo (767 y)...more
  • is 2.5 x Time since the birth of Dante Alighieri (756 y)...more
  • is 4 x Time since the publication of Copernicus's sun-centred model of the solar system (478 y)...more
  • is 5 x Time since the birth of Newton (378 y)...more
  • is 10 x Lifespan of Galapagos giant tortoise (190 y)...more
  • is 20 x Time since Charles Lindbergh first flew across the Atlantic (94 y)...more
  • is 25 x Time since introduction of the first mass-produced helicopter (Sikorsky R-4) (77 y)...more
  • is 25 x Period of Halley's Comet's orbit (75.3 y)...more
  • is 1000 x Period of Mars's orbit (1.88 y)...more

If this was a standard unit ...

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