Cassini's Sun calendar in the Basilica of San Petronio

Cassini's Sun calendar in the Basilica of San Petronio

Released

27/03/2002 4:53 pm

Copyright

Calter Photo

Description

In this Sun calendar, a hole in the ceiling of the cathedral projects a shaft of sunlight onto this bronze strip on the pavement below which is engraved with the days of the year and signs of the zodiac. The Basilica of San Petronio is in Bologna, Italy.

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