Time since the earliest writing

Time since the earliest writing (5,100 y)

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Neat Ratios ...

Time since the earliest writing (5,100 y)

  • is 1/500 of Age of earliest stone hand axe (2.6 million y)...more
  • is 1/500 of Time since the end of the Neogene geologic period (2.58 million y)...more
  • is 1/50 of Time since the first modern humans (250,000 y)...more
  • is 1/10 of Time since first humans in Australia (50,000 y)...more
  • is about as big as Age of oldest wooden wheel (5,150 y)...more
  • is about as big as Time since building of Stonehenge (5,120 y)...more
  • is 2 x Time since the birth of Pythagoras (2,592 y)...more
  • is 2.5 x Time since the birth of Hero of Alexandria (2,012 y)...more
  • is 5 x Time since start of building of Great Zimbabwe (1,000 y)...more
  • is 20 x Time since the birth of Joseph Fourier (254 y)...more
  • is 25 x Time since the birth of Ada Lovelace (207 y)...more
  • is 25 x Time since the birth of mathematician Maria Gaetana Agnesi (204 y)...more
  • is 26 x Time since the first iron steamship crossed the English Channel (200 y)...more
  • is 50 x Time since the birth of chemist Rosalind Franklin (102 y)...more
  • is 100 x Time since first Boeing 747 entering service (52 y)...more
  • is 100 x Time since first email sent (51 y)...more
  • is 100 x Time since the launch of Intel's first microprocessor, the 4004 (51 y)...more
  • is 200 x One average human generation (25 y)...more
  • is 500 x Time since first Tesla Model S launched (10 y)...more
  • is 2600 x Lifespan of rat (2 y)...more
  • is 5000 x Period of Earth's orbit (1 y)...more

If this was a standard unit ...

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