Studying how the ground looks, usually with technology. See 'Some Notes on Archaeology'.
Geophysical Surveying
Fact of the Day
Alexander the Great's body was preserved in honey.
Quote of the Day
"They are well named, for they have the countenance of angels, and as such should be coheirs with the angels in heaven.
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~ Pope Gregory I on the Angles, recorded by Bede
On This Day
1829 The Roman Catholic Relief Act received royal assent. It allowed British Catholics to vote, hold public office, and sit in parliament.
1912 The Royal Flying Corps was founded.
1919 British troops slaughter hundreds of unarmed Indian civilians in Amritsar at the Jallianwala Bagh Massacre.
1970 Late in the evening, an explosion in one of the oxygen tanks after a routine procedure caused crisis and a mission abort for Apollo 13.