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Age of earliest stone hand axe

Age of earliest stone hand axe (2.6 million y)

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Neat Ratios ...

Age of earliest stone hand axe (2.6 million y)

  • is 1/200 of Time since the emergence of earliest fish (530 million y)...more
  • is 1/25 of Time since the extinction of dinosaurs (66 million y)...more
  • is 1/25 of Time since the end of the Cretaceous geologic period (66 million y)...more
  • is about as big as Time since the end of the Neogene geologic period (2.58 million y)...more
  • is 250 x Time since first domestication of cattle (10,500 y)...more
  • is 250 x Time since first domestication of cats (10,500 y)...more
  • is 400 x Age of the earliest city (6,500 y)...more
  • is 500 x Time since the start of the Bronze Age (5,300 y)...more
  • is 500 x Age of oldest wooden wheel (5,150 y)...more
  • is 500 x Time since building of Stonehenge (5,120 y)...more
  • is 500 x Time since the earliest writing (5,100 y)...more
  • is 1000 x Time since the birth of Pythagoras (2,594 y)...more
  • is 10000 x Time since the birth of Joseph Fourier (256 y)...more

If this was a standard unit ...