In ancient Ireland bowls with holes in the bottom, which were floated on water until they sank, were used as timers. One such bronze bowl, found in a bog in Northern Ireland in County Antrim, took one hour to sink.…
In ancient Ireland bowls with holes in the bottom, which were floated on water until they sank, were used as timers. One such bronze bowl, found in a bog in Northern Ireland in County Antrim, took one hour to sink.…