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77

Centuries: 1st century BC - 1st century - 2nd century

Decades: 0s BC - 0s - 10s - 20s - 30s - 40s - 50s - 60s - 70s - 80s - 90s - 100s

72 73 74 75 76 77 78 79 80 81 82


Events:

Births:

Deaths:



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Radiometric dating

... or similar factors. For dating purposes, the important parameter is the half life of the reaction — the time it takes for half the material to decay. Half lives of ...