Judging how old an archaeological find is by knowledge of other items found. See 'Some Notes on Archaeology'.
Relative dating
Fact of the Day
In 1800, the Holy Roman Empire could boast 45 universities. France had 22, and England had two.
Quote of the Day
"Water knee deep and up to the waist in places. Rumours of being relieved by the Grand Fleet.
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~ British First World War soldier writing about the trenches in his diary
On This Day
1579 Thomas Gresham, merchant, financier, and founder of the Royal Exchange, died suddenly, apparently of apoplexy. He bequeathed his estate, after the death of his wife, to the Corporation of London and the Mercers' Company to set up a college to provide free lectures to the public; Gresham College thus became London's first institution of higher education.
1916 The hospital ship Britannic, sister-ship of Titanic, hit a mine and sank, killing 30.
1918 Ten days after the Armistice, the German navy surrendered to the British in the Firth of Forth.
1920 The assassinations of British intelligence officers ordered by Michael Collins in the Irish War of Independence led to thirty-one dead (from both sides) in what became known as 'Bloody Sunday'.
1974 21 people were killed and 182 injured when bombs exploded in two Birmingham pubs. The IRA was probably responsible, but the real culprits have never been found. The Birmingham Six, originally convicted of the bombings, were released because of dodgy police practices.
1981 The proceedings of the House of Commons were televised live for the first time.