Time since start of building of the Colosseum

Time since start of building of the Colosseum (1,948 y)

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Neat Ratios ...

Time since start of building of the Colosseum (1,948 y)

  • is 1/2500 of Age of earliest mammoth fossils (4.8 million y)...more
  • is 2 x Time since the birth of Omar Khayyam (974 y)...more
  • is 2.5 x Time since the birth of Marco Polo (768 y)...more
  • is 4 x Time since the publication of Copernicus's sun-centred model of the solar system (479 y)...more
  • is 10 x Time since the first passenger steam railway service (197 y)...more
  • is 25 x Time since introduction of the first mass-produced helicopter (Sikorsky R-4) (78 y)...more

If this was a standard unit ...

Is That A Big Number? - The Book

Yes, there's now a book based on these numbers. Oxford University Press: July 2018.

Click here to learn more about it.

Click here for Podcast: Andrew Elliott interviewed for New Books Network.

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