Is That A Big Number?

Neat Ratios ...

is 1/2500 of Time since the first modern humans (250,000 y)...more

is 1/500 of Time since first humans in Australia (50,000 y)...more

is 1/50 of Age of oldest wooden wheel (5,150 y)...more

is 1/50 of Time since building of Stonehenge (5,120 y)...more

is 1/50 of Time since the earliest writing (5,100 y)...more

is 1/40 of Time since earliest wheeled vehicles (4,000 y)...more

is 1/25 of Time since the birth of Socrates (2,489 y)...more

is 1/20 of Time since the birth of Hero of Alexandria (2,011 y)...more

is 1/10 of Time since start of building of Great Zimbabwe (1,000 y)...more

is 1/4 of Time since the death of Shakespeare (403 y)...more

is 2/5 of Time since the birth of Joseph Fourier (253 y)...more

is 2/5 of Period of Pluto's orbit (248 y)...more

is 1/2 of Time since the birth of Ada Lovelace (206 y)...more

is 1/2 of Time since the birth of mathematician Maria Gaetana Agnesi (203 y)...more

is 1/2 of Time since the first iron steamship crossed the English Channel (199 y)...more

is 2 x Time since first Boeing 747 entering service (51 y)...more

is 2 x Time since first email sent (50 y)...more

is 2 x Time since the launch of Intel's first microprocessor, the 4004 (50 y)...more

is 2.5 x Time since first IBM Personal Computer launched (40 y)...more

is 4 x One average human generation (25 y)...more

is 50 x Lifespan of rat (2 y)...more

is 100 x Period of Earth's orbit (1 y)...more