Age of earliest swords

Age of earliest swords (3,700 y)



Neat Ratios ...

Age of earliest swords (3,700 y)

  • is 1/4 of Time since first humans in Americas (15,000 y)...more
  • is 50 x Period of Halley's Comet's orbit (75.3 y)...more
  • is 50 x Time since the invention of the transistor (74 y)...more
  • is 250 x Time since first iPhone launched (15 y)...more
  • is 250 x Lifespan of a cat (15 y)...more
  • is 2000 x Period of Mars's orbit (1.88 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.