Lifespan of rat

Lifespan of rat (2 y)

/fact/lifespan-of-rat

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Neat Ratios ...

Lifespan of rat (2 y)

is 1/2000 of Time since earliest wheeled vehicles (4,000 y)...more
is 1/1000 of Time since the birth of Hero of Alexandria (2,014 y)...more
is 1/250 of Duration of Carthaginian Empire (504 y)...more
is 1/250 of Duration of Roman Empire (503 y)...more
is 1/250 of Duration of Egyptian Empire (500 y)...more
is 1/200 of Duration of Dutch Empire (407 y)...more
is 1/200 of Time since the death of Shakespeare (406 y)...more
is 1/200 of Duration of British Empire (394 y)...more
is 1/100 of Time since the first iron steamship crossed the English Channel (202 y)...more
is 1/100 of Time since the first passenger steam railway service (199 y)...more
is 1/40 of Lifespan of human being (80 y)...more
is 1/40 of Time since introduction of the first mass-produced helicopter (Sikorsky R-4) (80 y)...more
is 1/20 of Time since first Apple Macintosh Computer launched (40 y)...more
is 1/5 of Time since first Tesla Model S launched (10 y)...more

If this was a standard unit ...