Weatherday: Age is an isotope

Early 1900s Darracq vintage car in Kilcullen for the Gordon Bennett Rally (2014).

Any early rain will clear to a cloudy but dry day.

Highest local temperatures 8deg in fresh breezes from the south.

On this day in 1940, the Carbon-14 radioactive isotope was discovered, opening the door to very accurate dating of very old archaeological and geological samples.

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