Age of earliest swords

Age of earliest swords (3,700 y)

/fact/age-of-earliest-swords

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If Age of earliest swords (3,700 y) was a standard unit ...

Time since first humans in Americas (15,000 y)...more would be 4 x Age of earliest swords
Time since the birth of Diophantus (1,814 y)...more would be 1/2 of Age of earliest swords
Period of Halley's Comet's orbit (75.3 y)...more would be 1/50 of Age of earliest swords
Time since first iPhone launched (15 y)...more would be 1/250 of Age of earliest swords
Lifespan of a cat (15 y)...more would be 1/250 of Age of earliest swords
Period of Mars's orbit (1.88 y)...more would be 1/2000 of Age of earliest swords